Search Results

Search found 100267 results on 4011 pages for 'user instance'.

Page 420/4011 | < Previous Page | 416 417 418 419 420 421 422 423 424 425 426 427  | Next Page >

• Configuring Expert Search in Communicator 14 and SharePoint 2010

  Communicator 14 provides functionality to be able to search for contacts not just by name, but by skill.  For example a customer service agent at an airline can search for other agents with Travel Advisory experience by typing the search criteria into the Communicator search box and performing a search by keyword.  The search results will return users who have specified that skill in their profile on their SharePoint My Site.  This is actually pretty easy to configure, Ill show you how. Create Search and People Search Results Pages in SharePoint Communicator 14 Expert Search works by using the SharePoint 2010 Search Service to search SharePoint for user profiles with matching keywords.  This requires that you have an Enterprise Search site in your site collection which includes the search service and also the People Results pages.  The easiest way to do this is to create a Search Center site in your site collection. Note: I get an error when trying to create an Enterprise Search site in a Team Site in the SharePoint 2010 RTM bits, so I created it as a site collection that is evident in the URLs you see below. In the screenshots below, you can see that the URL of the SharePoint search service in the Search site collection is http://sps2010/sites/search/_vti_bin/search.asmx, and the URL of the People Search Results page is http://sps2010/sites/Search/Pages/peopleresults.aspx. Point Communications Server 14 to Search and People Search Results Pages For Communicator 14 to be able to perform an Expert Search, you need to configure Communications Server 14 to point to the Search Service and People Search Results page URLs. From a server with the OCS Core bits installed, fire up the Communications Server Management Shell and type Get-CsClientPolicy. Scroll down to the bottom of the output, were interested in setting the values of: SPSearchInternalURL SPSearchExternalURL SPSearchCenterInternalURL SPSearchCenterExternalURL SPSearchInternalURL and SPSearchExternalURL correspond to the internal and external URLs of the SharePoint search service in the Search site collection, while SPSearchCenterInternalURL and SPSearchCenterExternalURL correspond to the internal and external URLs of the people search results pages. Well use the Communications Server Management Shell to set the values of these CS policy properties. For simplicity, Im only going to set the internal URLs here. Set-CsClientPolicy SPSearchInternalURL http://sps2010/sites/search/_vti_bin/search.asmx     -SPSearchCenterInternalURL http://sps2010/sites/Search/Pages/peopleresults.aspx Log out and back into Communicator.  You can verify that these settings were applied by running the Get-CsClientPolicy cmdlet again from the Communications Server Management Shell. However, theres another super-secret ninja trick to verify that the settings were applied: Find the Communicator icon in the Windows System Tray Hold down the Ctrl button Click (left) the Communicator icon in the Windows System Tray do not depress the Ctrl button You should now see an extra menu item called Configuration Information, click it. Scroll down and locate the Expert Search URL and SharePoint Search Center URL keys and verify that their values correspond to those you set using the Set-CsClientPolicy PowerShell cmdlet. Configure a Sharepoint User Profile Import Im not going to provide detailed steps here except to say that you need to configure the SharePoint 2010 User Profile  Service Application to import user account details from Active Directory on a scheduled basis. This is a critical step because there are several user profile properties e.g. SipAddress that are only populated by a user profile import.  When performing an Expert Search, Communicator can only render results for users who have a SipAddress specified. Add Skills to User Profiles Navigate to your My Site and click on My Profile.  This page allows you to set many contact details that are searchable in SharePoint.  Were particularly interested in the Ask Me About property of a users profile.  Expert Search searches against this property to find users with matching skills. Configure a SharePoint Search Crawl Ensure that you have a scheduled job to crawl your Local SharePoint Sites content source.  Depending on how you have this configured, it will also crawl the My Site site collection and add user properties such as Ask Me About to the search index. Thats It! SharePoint 2010 provides new social and collaboration features to help users find other users with similar skills or interests. Expert Search extends this functionality directly into Microsoft Communicator 14, allowing you to interact with the users directly from the search results. Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

  Read the article

• TFS 2010 Server Name Change

  - by PearlFactory

  So I thought I would  change the name of my machine so that the other devs can find the TFS server easily. TFS 2005 would use the cool cmd line util tfsadminutil.....alas he is now gone HERE Are the steps to complete Edit the web.config and is usually located on default install C:\Program Files\Microsoft Team Foundation Server 2010\Application Tier\Web Services\web.config <add key="applicationDatabase" value="Data Source=JUSTIN\SQLI01;Initial Catalog=Tfs_Configuration;Integrated Security=True;" /> Next step is to edit previous Solutions/Projects 1) Open the Solution file i.e ProductApp.sln 2) Edit the SccTeamFoundationServer URL under Global section i.e Change this to new name   If you have DB server on same machine ...you will need to go in and remove existing db user account assigned to the tfs DB Remove old [%machine_name%] value i.e Tuned_Dev_PC_12\Justin user from the above DBs No add the new Justin\Justin user account associated with the new machine name to the TFS & Reporing dbs ... dbo or the TFSADMIN & TFSEXEC roles either will do in this case. (or add both ) Now either ReApply user or add New account (remove old account i.e Tuned_Dev_PC_12\justin) If DB permisions are setup correctyly you will get a screen that looks like this   If it pauses or gets stuck you need to look back at the adding correct DB Perms to the i.e JUSTIN\Justin user account Also if your project is still complaining about old TFS name 1) Team\Connect new Team Foundation Server 2) Add\Remove TFS 3) Add New TFS Name  Once you have connected to the new TFS server Reload your project from TFS..this way it removes a lot of the bugs that hang around in the local project\solution This is similar to a VSS2005 and older fix Cheers ( eta about 60-90 mins so weigh up the the need vs payoff. ) Shutdown restart

  Read the article

• How can I use Windows Workflow for validation of a Silverlight application?

  - by Josh C.

  I want to use Windows Workflow to provide a validation service. The validation that will be provided may have multiple tiers with chaining and redirecting to other stages of validation. The application that will generate the data for validation is a Silverlight app. I imagine the validation will take longer than the blink of an eye, so I don't want to tie the user up. Instead, I would like the user to submit the current data for validation. If the validation happens quickly, the service will perform an asynchronous callback to the app. The viewmodel that made the call would receive the validation output and post into the view. If the validation takes a long time, the user can move forward in the Silverlight app, disregarding the potential output of the validation. The viewmodel that made the call would be gone. I expect there would be another viewmodel that would contain the current validation output in its model. The validation value would change causing the user to get a notification in smaller notifcation area. I can see how the current view's viewmodel would call the validation through the viewmodel that is containing the validation output, but I am concerned that the service call will timeout. Also, I think the user may have already changed the values from the original validation, invalidating the feedback. I am sure asynchronous validation is a problem solved many times over, I am looking to glean from your experience in solving this kind of problem. Is this the right approach to the problem, or is there a better way to approach this?

  Read the article

• Introduction to WebCenter Personalization Server

  - by cindy.mcmullen(at)oracle.com

  IntroductionThe next release of Oracle WebCenter will include a new product:  the Personalization Server, developed by team members of Boulder Labs.  This team is comprised largely of the previous WebLogic Portal group, with several members having nearly 10 years' experience in personalization technologies.Customization is not PersonalizationCustomization is more of a static application behavior, such as retrieving and applying user preferences.  Personalization, on the other hand, delivers dynamic content based on run-time knowledge of the user.  It uses technology to accommodate the differences between individuals, producing the "a-ha!" experience.    WebCenter Personalization Server (WCPS) is able to integrate with and leverage many systems (property service, content management, user profile information, a recommendation service) to bring together a uniquely personalized user experience.Stay TunedUpcoming posts will discuss WCPS architecture, the Property Service, and the configuration and invocation of the OOTB "providers" such as CMIS, Activity Graph, and People Connections.    

  Read the article

• ODI 11g – Expert Accelerator for Model Creation

  - by David Allan

  Following on from my post earlier this morning on scripting model and topology creation tonight I thought I’d add a little UI to make those groovy functions a little more palatable. In OWB we have experts for capturing user input, with the groovy console we open up opportunities to build UI around the scripts in a very easy way – even I can do it;-) After a little googling around I found some useful posts on SwingBuilder, the most useful one that I used for the dialog below was this one here. This dialog captures user input for the technology and context for the model and logical schema etc to be created. You can see there are a variety of interesting controls, and its really easy to do. The dialog captures the users input, then when OK is pressed I call the functions from the earlier post to create the logical schema (plus all the other objects) and model. The image below shows what was created, you can see the model (with typo in name), the model is Oracle technology and references the logical schema ORACLE_SCOTT (that I named in dialog above), the logical schema is mapped via the GLOBAL context to the data server ORACLE_SCOTT_DEV (that I named in dialog above), and the physical schema used was just the user name that I connected with – so if you wanted a different user the schema name could be added to the dialog. In a nutshell, one dialog that encapsulates a simpler mechanism for creating a model. You can create your own scripts that use dialogs like this, capture input and process. You can find the groovy script for this is here odi_create_model.groovy, again I wrapped the user capture code in a groovy function and return the result in a variable and then simply call the createLogicalSchema and createModel functions from the previous posting. The script I supplied above has everything you will need. To execute use Tools->Groovy->Open Script and then execute the green play button on the toolbar. Have fun.

  Read the article

• A Communication System for XAML Applications

  - by psheriff

  In any application, you want to keep the coupling between any two or more objects as loose as possible. Coupling happens when one class contains a property that is used in another class, or uses another class in one of its methods. If you have this situation, then this is called strong or tight coupling. One popular design pattern to help with keeping objects loosely coupled is called the Mediator design pattern. The basics of this pattern are very simple; avoid one object directly talking to another object, and instead use another class to mediate between the two. As with most of my blog posts, the purpose is to introduce you to a simple approach to using a message broker, not all of the fine details. IPDSAMessageBroker Interface As with most implementations of a design pattern, you typically start with an interface or an abstract base class. In this particular instance, an Interface will work just fine. The interface for our Message Broker class just contains a single method “SendMessage” and one event “MessageReceived”. public delegate void MessageReceivedEventHandler( object sender, PDSAMessageBrokerEventArgs e); public interface IPDSAMessageBroker{  void SendMessage(PDSAMessageBrokerMessage msg);   event MessageReceivedEventHandler MessageReceived;} PDSAMessageBrokerMessage Class As you can see in the interface, the SendMessage method requires a type of PDSAMessageBrokerMessage to be passed to it. This class simply has a MessageName which is a ‘string’ type and a MessageBody property which is of the type ‘object’ so you can pass whatever you want in the body. You might pass a string in the body, or a complete Customer object. The MessageName property will help the receiver of the message know what is in the MessageBody property. public class PDSAMessageBrokerMessage{  public PDSAMessageBrokerMessage()  {  }   public PDSAMessageBrokerMessage(string name, object body)  {    MessageName = name;    MessageBody = body;  }   public string MessageName { get; set; }   public object MessageBody { get; set; }} PDSAMessageBrokerEventArgs Class As our message broker class will be raising an event that others can respond to, it is a good idea to create your own event argument class. This class will inherit from the System.EventArgs class and add a couple of additional properties. The properties are the MessageName and Message. The MessageName property is simply a string value. The Message property is a type of a PDSAMessageBrokerMessage class. public class PDSAMessageBrokerEventArgs : EventArgs{  public PDSAMessageBrokerEventArgs()  {  }   public PDSAMessageBrokerEventArgs(string name,     PDSAMessageBrokerMessage msg)  {    MessageName = name;    Message = msg;  }   public string MessageName { get; set; }   public PDSAMessageBrokerMessage Message { get; set; }} PDSAMessageBroker Class Now that you have an interface class and a class to pass a message through an event, it is time to create your actual PDSAMessageBroker class. This class implements the SendMessage method and will also create the event handler for the delegate created in your Interface. public class PDSAMessageBroker : IPDSAMessageBroker{  public void SendMessage(PDSAMessageBrokerMessage msg)  {    PDSAMessageBrokerEventArgs args;     args = new PDSAMessageBrokerEventArgs(      msg.MessageName, msg);     RaiseMessageReceived(args);  }   public event MessageReceivedEventHandler MessageReceived;   protected void RaiseMessageReceived(    PDSAMessageBrokerEventArgs e)  {    if (null != MessageReceived)      MessageReceived(this, e);  }} The SendMessage method will take a PDSAMessageBrokerMessage object as an argument. It then creates an instance of a PDSAMessageBrokerEventArgs class, passing to the constructor two items: the MessageName from the PDSAMessageBrokerMessage object and also the object itself. It may seem a little redundant to pass in the message name when that same message name is part of the message, but it does make consuming the event and checking for the message name a little cleaner – as you will see in the next section. Create a Global Message Broker In your WPF application, create an instance of this message broker class in the App class located in the App.xaml file. Create a public property in the App class and create a new instance of that class in the OnStartUp event procedure as shown in the following code: public partial class App : Application{  public PDSAMessageBroker MessageBroker { get; set; }   protected override void OnStartup(StartupEventArgs e)  {    base.OnStartup(e);     MessageBroker = new PDSAMessageBroker();  }} Sending and Receiving Messages Let’s assume you have a user control that you load into a control on your main window and you want to send a message from that user control to the main window. You might have the main window display a message box, or put a string into a status bar as shown in Figure 1. Figure 1: The main window can receive and send messages The first thing you do in the main window is to hook up an event procedure to the MessageReceived event of the global message broker. This is done in the constructor of the main window: public MainWindow(){  InitializeComponent();   (Application.Current as App).MessageBroker.     MessageReceived += new MessageReceivedEventHandler(       MessageBroker_MessageReceived);} One piece of code you might not be familiar with is accessing a property defined in the App class of your XAML application. Within the App.Xaml file is a class named App that inherits from the Application object. You access the global instance of this App class by using Application.Current. You cast Application.Current to ‘App’ prior to accessing any of the public properties or methods you defined in the App class. Thus, the code (Application.Current as App).MessageBroker, allows you to get at the MessageBroker property defined in the App class. In the MessageReceived event procedure in the main window (shown below) you can now check to see if the MessageName property of the PDSAMessageBrokerEventArgs is equal to “StatusBar” and if it is, then display the message body into the status bar text block control. void MessageBroker_MessageReceived(object sender,   PDSAMessageBrokerEventArgs e){  switch (e.MessageName)  {    case "StatusBar":      tbStatus.Text = e.Message.MessageBody.ToString();      break;  }} In the Page 1 user control’s Loaded event procedure you will send the message “StatusBar” through the global message broker to any listener using the following code: private void UserControl_Loaded(object sender,  RoutedEventArgs e){  // Send Status Message  (Application.Current as App).MessageBroker.    SendMessage(new PDSAMessageBrokerMessage("StatusBar",      "This is Page 1"));} Since the main window is listening for the message ‘StatusBar’, it will display the value “This is Page 1” in the status bar at the bottom of the main window. Sending a Message to a User Control The previous example sent a message from the user control to the main window. You can also send messages from the main window to any listener as well. Remember that the global message broker is really just a broadcaster to anyone who has hooked into the MessageReceived event. In the constructor of the user control named ucPage1 you can hook into the global message broker’s MessageReceived event. You can then listen for any messages that are sent to this control by using a similar switch-case structure like that in the main window. public ucPage1(){  InitializeComponent();   // Hook to the Global Message Broker  (Application.Current as App).MessageBroker.    MessageReceived += new MessageReceivedEventHandler(      MessageBroker_MessageReceived);} void MessageBroker_MessageReceived(object sender,  PDSAMessageBrokerEventArgs e){  // Look for messages intended for Page 1  switch (e.MessageName)  {    case "ForPage1":      MessageBox.Show(e.Message.MessageBody.ToString());      break;  }} Once the ucPage1 user control has been loaded into the main window you can then send a message using the following code: private void btnSendToPage1_Click(object sender,  RoutedEventArgs e){  PDSAMessageBrokerMessage arg =     new PDSAMessageBrokerMessage();   arg.MessageName = "ForPage1";  arg.MessageBody = "Message For Page 1";   // Send a message to Page 1  (Application.Current as App).MessageBroker.SendMessage(arg);} Since the MessageName matches what is in the ucPage1 MessageReceived event procedure, ucPage1 can do anything in response to that event. It is important to note that when the message gets sent it is sent to all MessageReceived event procedures, not just the one that is looking for a message called “ForPage1”. If the user control ucPage1 is not loaded and this message is broadcast, but no other code is listening for it, then it is simply ignored. Remove Event Handler In each class where you add an event handler to the MessageReceived event you need to make sure to remove those event handlers when you are done. Failure to do so can cause a strong reference to the class and thus not allow that object to be garbage collected. In each of your user control’s make sure in the Unloaded event to remove the event handler. private void UserControl_Unloaded(object sender, RoutedEventArgs e){  if (_MessageBroker != null)    _MessageBroker.MessageReceived -=         _MessageBroker_MessageReceived;} Problems with Message Brokering As with most “global” classes or classes that hook up events to other classes, garbage collection is something you need to consider. Just the simple act of hooking up an event procedure to a global event handler creates a reference between your user control and the message broker in the App class. This means that even when your user control is removed from your UI, the class will still be in memory because of the reference to the message broker. This can cause messages to still being handled even though the UI is not being displayed. It is up to you to make sure you remove those event handlers as discussed in the previous section. If you don’t, then the garbage collector cannot release those objects. Instead of using events to send messages from one object to another you might consider registering your objects with a central message broker. This message broker now becomes a collection class into which you pass an object and what messages that object wishes to receive. You do end up with the same problem however. You have to un-register your objects; otherwise they still stay in memory. To alleviate this problem you can look into using the WeakReference class as a method to store your objects so they can be garbage collected if need be. Discussing Weak References is beyond the scope of this post, but you can look this up on the web. Summary In this blog post you learned how to create a simple message broker system that will allow you to send messages from one object to another without having to reference objects directly. This does reduce the coupling between objects in your application. You do need to remember to get rid of any event handlers prior to your objects going out of scope or you run the risk of having memory leaks and events being called even though you can no longer access the object that is responding to that event. NOTE: You can download the sample code for this article by visiting my website at http://www.pdsa.com/downloads. Select “Tips & Tricks”, then select “A Communication System for XAML Applications” from the drop down list.

  Read the article

• Exim forwards not going out through TLS

  - by Blake

  I'm trying to get Exim to use STARTTLS to send emails that are just FORWARDS. I have a server accepting email at example-accepting.com for users. So I want [email protected] to forward all email to [email protected]. If I do this from the command like on example-accepting.com... echo "test" | mail -s "ssl/tls test" [email protected] Success!! Sent via TLS BUT, if I send an email to [email protected] the forward fails, it's NOT being sent via TLS. I've tried both forwarding the email via /etc/aliases and the user .forward file. The email is indeed sent, but NOT via TLS. Why is it when I run "mail" from the command like it's working like it should, but a .forward is not using TLS? Thanks

  Read the article

• Cisco Catalyst 65XX and traffic shaping

  - by Nadz Goldman

  Hello! I have Cisco Catalyst 65XX, many VLANs and about ~1300 users. Users connected to some D-Link switches with second-level management. D-Link switches come to my Cisco Catalyst 65XX by VLANs. So, how I can shape traffic per user? If I use something like this: access-list 145 permit ip any host 192.168.0.1 access-list 145 permit ip any host 192.168.0.2 access-list 145 permit ip any host 192.168.0.3 ... int Gi0/1 traffic-shape group 145 128000 7936 7936 1000 will I have shape traffic per user or it will shape traffic only on interface? I mean - every user will have 128kb/s (per user) or everybody will have 128kb/s ? If it will be for everybody, then what is the solution of my question: how every user can have 128kb/s ?

  Read the article

• SQL Server v.Next (Denali) : More on contained databases and "contained users"

  - by AaronBertrand

  One of the reasons for contained databases (see my previous post ) is to allow for a more seamless transition when moving a database from one server to another. One of the biggest complications in doing so is making sure that all of the logins are in place on the new server. Contained databases help solve this issue by creating a new type of user: a database-level user with a password. I want to stress that this is not the same concept as a user without a login , which serves a completely different...(read more)

  Read the article

• MVC OnActionExecuting to Redirect

  - by Aligned

  Originally posted on: http://geekswithblogs.net/Aligned/archive/2014/08/12/mvc-onactionexecuting-to-redirect.aspxI recently had the following requirements in an MVC application: Given a new user that still has the default password When they first login Then the user must change their password and optionally provide contact information I found that I can override the OnActionExecuting method in a BaseController class.public class BaseController : Controller { [Inject] public ISessionManager SessionManager { get; set; } protected override void OnActionExecuting(ActionExecutingContext filterContext) { // call the base method first base.OnActionExecuting(filterContext); // if the user hasn't changed their password yet, force them to the welcome page if (!filterContext.RouteData.Values.ContainsValue("WelcomeNewUser")) { var currentUser = this.SessionManager.GetCurrentUser(); if (currentUser.FusionUser.IsPasswordChangeRequired) { filterContext.Result = new RedirectResult("/welcome"); } } } } Better yet, you can use an ActionFilterAttribute (and here) and apply the attribute to the Base or individual controllers./// <summary> /// Redirect the user to the WelcomePage if the FusionUser.IsPasswordChangeRequired is true; /// </summary> public class WelcomePageRedirectActionFilterAttribute : ActionFilterAttribute { [Inject] public ISessionManager SessionManager { get; set; } public override void OnActionExecuting(ActionExecutingContext actionContext) { base.OnActionExecuting(actionContext); // if the user hasn't changed their password yet, force them to the welcome page if (actionContext.RouteData.Values.ContainsValue("WelcomeNewUser")) { return; } var currentUser = this.SessionManager.GetCurrentUser(); if (currentUser.FusionUser.IsPasswordChangeRequired) { actionContext.Result = new RedirectResult("/welcome"); } } }  [WelcomePageRedirectActionFilterAttribute] public class BaseController : Controller { ... } The requirement is now met.

  Read the article

• CUPS basic auth error through web interface

  - by Inaimathi

  I'm trying to configure CUPS to allow remote administration through the web interface. There's enough documentation out there that I can figure out what to change in my cupsd.conf (changing Listen localhost:631 to Port 631, and adding Allow @LOCAL to the /, /admin and /admin/conf sections). I'm now at the point where I can see the CUPS interface from another machine on the same network. The trouble is, when I try to Add Printer, I'm asked for a username and password, but my response is rejected even when I know I've gotten it right (I assume it's asking for the username and password of someone in the lpadmin group on the server machine; I've sshed in with credentials its rejecting, and the user I'm using has been added to the lpadmin group). If I disable auth outright, by changing DefaultAuthType Basic to DefaultAuthType None, I get an "Unauthorized" error instead of a password request when I try to Add Printer. What am I doing wrong? Is there a way of letting users from the local network to administer the print server through the CUPS web interface? EDIT: By request, my complete cupsd.conf (spoiler: minimally edited default config file that comes with the edition of CUPS from the Debian wheezy repos): LogLevel warn MaxLogSize 0 SystemGroup lpadmin Port 631 # Listen localhost:631 Listen /var/run/cups/cups.sock Browsing On BrowseOrder allow,deny BrowseAllow all BrowseLocalProtocols CUPS dnssd # DefaultAuthType Basic DefaultAuthType None WebInterface Yes <Location /> Order allow,deny Allow @LOCAL </Location> <Location /admin> Order allow,deny Allow @LOCAL </Location> <Location /admin/conf> AuthType Default Require user @SYSTEM Order allow,deny Allow @LOCAL </Location> # Set the default printer/job policies... <Policy default> # Job/subscription privacy... JobPrivateAccess default JobPrivateValues default SubscriptionPrivateAccess default SubscriptionPrivateValues default # Job-related operations must be done by the owner or an administrator... <Limit Create-Job Print-Job Print-URI Validate-Job> Order deny,allow </Limit> <Limit Send-Document Send-URI Hold-Job Release-Job Restart-Job Purge-Jobs Set-Job-Attributes Create-Job-Subscription Renew-Subscription Cancel-Subscription Get-Notifications Reprocess-Job Cancel-Current-Job Suspend-Current-Job Resume-Job Cancel-My-Jobs Close-Job CUPS-Move-Job CUPS-Get-Document> Require user @OWNER @SYSTEM Order deny,allow </Limit> # All administration operations require an administrator to authenticate... <Limit CUPS-Add-Modify-Printer CUPS-Delete-Printer CUPS-Add-Modify-Class CUPS-Delete-Class CUPS-Set-Default CUPS-Get-Devices> AuthType Default Require user @SYSTEM Order deny,allow </Limit> # All printer operations require a printer operator to authenticate... <Limit Pause-Printer Resume-Printer Enable-Printer Disable-Printer Pause-Printer-After-Current-Job Hold-New-Jobs Release-Held-New-Jobs Deactivate-Printer Activate-Printer Restart-Printer Shutdown-Printer Startup-Printer Promote-Job Schedule-Job-After Cancel-Jobs CUPS-Accept-Jobs CUPS-Reject-Jobs> AuthType Default Require user @SYSTEM Order deny,allow </Limit> # Only the owner or an administrator can cancel or authenticate a job... <Limit Cancel-Job CUPS-Authenticate-Job> Require user @OWNER @SYSTEM Order deny,allow </Limit> <Limit All> Order deny,allow </Limit> </Policy> # Set the authenticated printer/job policies... <Policy authenticated> # Job/subscription privacy... JobPrivateAccess default JobPrivateValues default SubscriptionPrivateAccess default SubscriptionPrivateValues default # Job-related operations must be done by the owner or an administrator... <Limit Create-Job Print-Job Print-URI Validate-Job> AuthType Default Order deny,allow </Limit> <Limit Send-Document Send-URI Hold-Job Release-Job Restart-Job Purge-Jobs Set-Job-Attributes Create-Job-Subscription Renew-Subscription Cancel-Subscription Get-Notifications Reprocess-Job Cancel-Current-Job Suspend-Current-Job Resume-Job Cancel-My-Jobs Close-Job CUPS-Move-Job CUPS-Get-Document> AuthType Default Require user @OWNER @SYSTEM Order deny,allow </Limit> # All administration operations require an administrator to authenticate... <Limit CUPS-Add-Modify-Printer CUPS-Delete-Printer CUPS-Add-Modify-Class CUPS-Delete-Class CUPS-Set-Default> AuthType Default Require user @SYSTEM Order deny,allow </Limit> # All printer operations require a printer operator to authenticate... <Limit Pause-Printer Resume-Printer Enable-Printer Disable-Printer Pause-Printer-After-Current-Job Hold-New-Jobs Release-Held-New-Jobs Deactivate-Printer Activate-Printer Restart-Printer Shutdown-Printer Startup-Printer Promote-Job Schedule-Job-After Cancel-Jobs CUPS-Accept-Jobs CUPS-Reject-Jobs> AuthType Default Require user @SYSTEM Order deny,allow </Limit> # Only the owner or an administrator can cancel or authenticate a job... <Limit Cancel-Job CUPS-Authenticate-Job> AuthType Default Require user @OWNER @SYSTEM Order deny,allow </Limit> <Limit All> Order deny,allow </Limit> </Policy>

  Read the article

• Convert your Hash keys to object properties in Ruby

  - by kerry

  Being a Ruby noob (and having a background in Groovy), I was a little surprised that you can not access hash objects using the dot notation.  I am writing an application that relies heavily on XML and JSON data.  This data will need to be displayed and I would rather use book.author.first_name over book[‘author’][‘first_name’].  A quick search on google yielded this post on the subject. So, taking the DRYOO (Don’t Repeat Yourself Or Others) concept.  I came up with this: 1: class ::Hash 2:  3: # add keys to hash 4: def to_obj 5: self.each do |k,v| 6: if v.kind_of? Hash 7: v.to_obj 8: end 9: k=k.gsub(/\.|\s|-|\/|\'/, '_').downcase.to_sym 10: self.instance_variable_set("@#{k}", v) ## create and initialize an instance variable for this key/value pair 11: self.class.send(:define_method, k, proc{self.instance_variable_get("@#{k}")}) ## create the getter that returns the instance variable 12: self.class.send(:define_method, "#{k}=", proc{|v| self.instance_variable_set("@#{k}", v)}) ## create the setter that sets the instance variable 13: end 14: return self 15: end 16: end This works pretty well.  It converts each of your keys to properties of the Hash.  However, it doesn’t sit very well with me because I probably will not use 90% of the properties most of the time.  Why should I go through the performance overhead of creating instance variables for all of the unused ones? Enter the ‘magic method’ #missing_method: 1: class ::Hash 2: def method_missing(name) 3: return self[name] if key? name 4: self.each { |k,v| return v if k.to_s.to_sym == name } 5: super.method_missing name 6: end 7: end This is a much cleaner method for my purposes.  Quite simply, it checks to see if there is a key with the given symbol, and if not, loop through the keys and attempt to find one. I am a Ruby noob, so if there is something I am overlooking, please let me know.

  Read the article

• Subscript out of range error in VBScript script

  - by user3912

  I'm trying to move my entire User folder in Windows Vista to a non-system partition. To do so with a minimum hassle I'm following the directions provided at Ben's Blog, specifically the VBScript he provides. However executing the script throws up an error which I can't resolve myself. Here's the VBScript code followed by the text file it works from, and finally my error message. How do I correct the problem? VBScript Code: '# Perform dir /a c:\users > c:\dir.txt '# place this script file in c:\ too '# double click to run it '# run resulting script.bat from recovery mode repprefix = " Directory of..." ' Modify to your language sourcedrive = "C:\" targetdrive = "D:\" altsourcedrive = "C:\" 'leave same as target drive unless otherwise indicated alttargetdrive = "E:\" 'leave same as target drive unless otherwise indicated inname = "dir.txt" outname = "script.bat" userroot = "Users" set fso = CreateObject("Scripting.FileSystemObject") ' construct batch commands for saving rights, then link, the recreating rights Function GetCommand(curroot, line, typ, keyword) ' first need to get source and target pos = Instr(line, keyword) + Len(keyword) tuple = Trim(Mid(line, pos)) arr = Split(tuple, "[") oldtarget = Replace(arr(1), "]", "") oldlink = curroot & "\" & Trim(arr(0)) ' need to determine if we are pointing back to old disk newlink = replace(oldlink, sourcedrive, targetdrive) if(Instr(oldtarget, sourcedrive & userroot)) then newtarget = Replace(oldtarget, sourcedrive, targetdrive) else newtarget = oldtarget ' still pointing to original target end if ' comment out = "echo " & newlink & " --- " & newtarget & vbCrLf ' save permissions out = out & "icacls """ & replace(oldlink, sourcedrive, altsourcedrive) & """ /L /save " & altsourcedrive & "permissions.txt" & vbCrLf ' create link newlink = replace(newlink, targetdrive, alttargetdrive) if typ = "junction" then out = out & "mklink /j """ & newlink & """ """ & newtarget & """" & vbCrLf else ' typ = "symlink" out = out & "mklink /d """ & newlink & """ """ & newtarget & """" & vbCrLf end if 'set hidden attribute out = out & "attrib +h """ & newlink & """ /L" & vbCrLf ' apply permissions shortlink = Left(newlink, InstrRev(newlink, "\") - 1) 'icacls works strangely - non-orthogonal for restore out = out & "icacls """ & shortlink & """ /L /restore " & altsourcedrive & "permissions.txt" & vbCrLf GetCommand = out & vbCrLf End Function Sub WriteToFile(file, text) ForWriting = 2 Create = true set outfile = fso.OpenTextFile(file, ForWriting, Create) Call outfile.Write(text) Call outfile.Close() End Sub outtext = "ROBOCOPY " & altsourcedrive & userroot & " " & alttargetdrive & userroot & " /E /COPYALL /XJ" & vbCrLf & vbCrLf set intext = fso.OpenTextFile(inname) while not intext.AtEndOfStream line = intext.ReadLine() if Instr(line, repprefix) then curroot = Replace(line, repprefix, "") elseif Instr(line, juncname) then outtext = outtext & GetCommand(curroot, line, "junction", juncname) elseif Instr(line, linkname) then outtext = outtext & GetCommand(curroot, line, "symlink", linkname) end if Wend outtext = outtext & "icacls " & altsourcedrive & userroot & " /L /save " & altsourcedrive & "permissions.txt" & vbCrLf outtext = outtext & "ren " & altsourcedrive & userroot & " _" & userroot & vbCrLf outtext = outtext & "mklink /j " & altsourcedrive & userroot & " " & targetdrive & userroot & vbCrLf outtext = outtext & "icacls " & altsourcedrive & " /L /restore " & altsourcedrive & "permissions.txt" Call intext.Close() Call WriteToFile(outname, outtext) MsgBox("Done writing to " & outname) dir.txt: Volume in drive C is ACER Volume Serial Number is 08D7-C0CC Directory of c:\users 07/16/2009 12:29 PM {DIR} . 07/16/2009 12:29 PM {DIR} .. 11/02/2006 09:02 AM {SYMLINKD} All Users [C:\ProgramData] 11/02/2006 09:02 AM {DIR} Default 11/02/2006 09:02 AM {JUNCTION} Default User [C:\Users\Default] 08/21/2008 08:37 AM 174 desktop.ini 11/02/2006 08:50 AM {DIR} Public 07/19/2009 08:54 PM {DIR} Steve 1 File(s) 174 bytes 7 Dir(s) 5,679,947,776 bytes free Error Message: Windows Script Host Script: C:\user location.vbs Line: 25 Char: 2 Error: Subscript out of range: '[number: 1]' Code: 800A0009 Source: Microsoft VBScript runtime error (In the VBScript script that I'm using on my system, I believe that 'Line 25' corresponds to the line beginning with oldtarget = Replace(arr(1), "]", "").

  Read the article

• PostgreSQL automatic backup

  - by Ragnar123

  I have been trying to set up a backup script on a windows server. I have used pgAgent (scheduling for pgAdmin), to run the backup script. No problems with the backup script. However, my jobs are not running like they should. I have set both the schedule, and the steps. I am fairly certain, that I am running the service under a wrong user or a user without the required permissions. I run the service like this: "C:\Program Files\pgAdmin III\pgAgent" INSTALL pgAgent -u postgres -p secret hostaddr=127.0.0.1 dbname=pgadmin user=postgres And I get an error, telling me that there was an error with the login information, though I know it's correct. When I go under services (controlpanel -- administration -- services), I am able to start the service with the local user. Can this be the problem? Where can I see or change the permissions on the postgres user?

  Read the article

• SQL SERVER – Weekly Series – Memory Lane – #049

  - by Pinal Dave

  Here is the list of selected articles of SQLAuthority.com across all these years. Instead of just listing all the articles I have selected a few of my most favorite articles and have listed them here with additional notes below it. Let me know which one of the following is your favorite article from memory lane. 2007 Two Connections Related Global Variables Explained – @@CONNECTIONS and @@MAX_CONNECTIONS @@CONNECTIONS Returns the number of attempted connections, either successful or unsuccessful since SQL Server was last started. @@MAX_CONNECTIONS Returns the maximum number of simultaneous user connections allowed on an instance of SQL Server. The number returned is not necessarily the number currently configured. Query Editor – Microsoft SQL Server Management Studio This post may be very simple for most of the users of SQL Server 2005. Earlier this year, I have received one question many times – Where is Query Analyzer in SQL Server 2005? I wrote small post about it and pointed many users to that post – SQL SERVER – 2005 Query Analyzer – Microsoft SQL SERVER Management Studio. Recently I have been receiving similar question. OUTPUT Clause Example and Explanation with INSERT, UPDATE, DELETE SQL Server 2005 has a new OUTPUT clause, which is quite useful. OUTPUT clause has access to insert and deleted tables (virtual tables) just like triggers. OUTPUT clause can be used to return values to client clause. OUTPUT clause can be used with INSERT, UPDATE, or DELETE to identify the actual rows affected by these statements. OUTPUT clause can generate a table variable, a permanent table, or temporary table. Even though, @@Identity will still work with SQL Server 2005, however I find the OUTPUT clause very easy and powerful to use. Let us understand the OUTPUT clause using an example. Find Name of The SQL Server Instance Based on database server stored procedures has to run different logic. We came up with two different solutions. 1) When database schema is very much changed, we wrote completely new stored procedure and deprecated older version once it was not needed. 2) When logic depended on Server Name we used global variable @@SERVERNAME. It was very convenient while writing migrating script which depended on the server name for the same database. Explanation of TRY…CATCH and ERROR Handling With RAISEERROR Function One of the developers at my company thought that we can not use the RAISEERROR function in new feature of SQL Server 2005 TRY… CATCH. When asked for an explanation he suggested SQL SERVER – 2005 Explanation of TRY… CATCH and ERROR Handling article as excuse suggesting that I did not give example of RAISEERROR with TRY…CATCH. We all thought it was funny. Just to keep records straight, TRY… CATCH can sure use RAISEERROR function. Different Types of Cache Objects Serveral kinds of objects can be stored in the procedure cache: Compiled Plans: When the query optimizer finishes compiling a query plan, the principal output is compiled plan. Execution contexts: While executing a compiled plan, SQL Server has to keep track of information about the state of execution. Cursors: Cursors track the execution state of server-side cursors, including the cursor’s current location within a resultset. Algebrizer trees: The Algebrizer’s job is to produce an algebrizer tree, which represents the logic structure of a query. Open SSMS From Command Prompt – sqlwb.exe Example This article is written by request and suggestion of Sr. Web Developer at my organization. Due to the nature of this article most of the content is referred from Book On-Line. sqlwbcommand prompt utility which opens SQL Server Management Studio. Squib command does not run queries from the command prompt. sqlcmd utility runs queries from command prompt, read for more information. 2008 Puzzle – Solution – Computed Columns Datatype Explanation Just a day before I wrote article SQL SERVER – Puzzle – Computed Columns Datatype Explanation which was inspired by SQL Server MVP Jacob Sebastian. I suggest that before continuing this article read the original puzzle question SQL SERVER – Puzzle – Computed Columns Datatype Explanation.The question was if the computed column was of datatype TINYINT how to create a Computed Column of datatype INT? 2008 – Find If Index is Being Used in Database It is very often I get a query that how to find if any index is being used in the database or not. If any database has many indexes and not all indexes are used it can adversely affect performance. If the number of indices are higher it reduces the INSERT / UPDATE / DELETE operation but increase the SELECT operation. It is recommended to drop any unused indexes from table to improve the performance. 2009 Interesting Observation – Execution Plan and Results of Aggregate Concatenation Queries If you want to see what’s going on here, I think you need to shift your point of view from an implementation-centric view to an ANSI point of view. ANSI does not guarantee processing the order. Figure 2 is interesting, but it will be potentially misleading if you don’t understand the ANSI rule-set SQL Server operates under in most cases. Implementation thinking can certainly be useful at times when you really need that multi-million row query to finish before the backup fire off, but in this case, it’s counterproductive to understanding what is going on. SQL Server Management Studio and Client Statistics Client Statistics are very important. Many a times, people relate queries execution plan to query cost. This is not a good comparison. Both parameters are different, and they are not always related. It is possible that the query cost of any statement is less, but the amount of the data returned is considerably larger, which is causing any query to run slow. How do we know if any query is retrieving a large amount data or very little data? 2010 I encourage all of you to go through complete series and write your own on the subject. If you write an article and send it to me, I will publish it on this blog with due credit to you. If you write on your own blog, I will update this blog post pointing to your blog post. SQL SERVER – ORDER BY Does Not Work – Limitation of the View 1 SQL SERVER – Adding Column is Expensive by Joining Table Outside View – Limitation of the View 2 SQL SERVER – Index Created on View not Used Often – Limitation of the View 3 SQL SERVER – SELECT * and Adding Column Issue in View – Limitation of the View 4 SQL SERVER – COUNT(*) Not Allowed but COUNT_BIG(*) Allowed – Limitation of the View 5 SQL SERVER – UNION Not Allowed but OR Allowed in Index View – Limitation of the View 6 SQL SERVER – Cross Database Queries Not Allowed in Indexed View – Limitation of the View 7 SQL SERVER – Outer Join Not Allowed in Indexed Views – Limitation of the View 8 SQL SERVER – SELF JOIN Not Allowed in Indexed View – Limitation of the View 9 SQL SERVER – Keywords View Definition Must Not Contain for Indexed View – Limitation of the View 10 SQL SERVER – View Over the View Not Possible with Index View – Limitations of the View 11 SQL SERVER – Get Query Running in Session I was recently looking for syntax where I needed a query running in any particular session. I always remembered the syntax and ha d actually written it down before, but somehow it was not coming to mind quickly this time. I searched online and I ended up on my own article written last year SQL SERVER – Get Last Running Query Based on SPID. I felt that I am getting old because I forgot this really simple syntax. Find Total Number of Transaction on Interval In one of my recent Performance Tuning assignments I was asked how do someone know how many transactions are happening on a server during certain interval. I had a handy script for the same. Following script displays transactions happened on the server at the interval of one minute. You can change the WAITFOR DELAY to any other interval and it should work. 2011 Here are two DMV’s which are newly introduced in SQL Server 2012 and provides vital information about SQL Server. DMV – sys.dm_os_volume_stats – Information about operating system volume DMV – sys.dm_os_windows_info – Information about Operating System SQL Backup and FTP – A Quick and Handy Tool I have used this tool extensively since 2009 at numerous occasion and found it to be very impressive. What separates it from the crowd the most – it is it’s apparent simplicity and speed. When I install SQLBackupAndFTP and configure backups – all in 1 or 2 minutes, my clients are always impressed. Quick Note about JOIN – Common Questions and Simple Answers In this blog post we are going to talk about join and lots of things related to the JOIN. I recently started office hours to answer questions and issues of the community. I receive so many questions that are related to JOIN. I will share a few of the same over here. Most of them are basic, but note that the basics are of great importance. 2012 Importance of User Without Login Question: “In recent version of SQL Server we can create user without login. What is the use of it?” Great question indeed. Let me first attempt to answer this question but after reading my answer I need your help. I want you to help him as well with adding more value to it. Preserve Leading Zero While Coping to Excel from SSMS Earlier I wrote two articles about how to efficiently copy data from SSMS to Excel. Since I wrote that post there are plenty of interest generated on this subject. There are a few questions I keep on getting over this subject. One of the question is how to get the leading zero preserved while copying the data from SSMS to Excel. Well it is almost the same way as my earlier post SQL SERVER – Excel Losing Decimal Values When Value Pasted from SSMS ResultSet. The key here is in EXCEL and not in SQL Server. Solution – 2 T-SQL Puzzles – Display Star and Shortest Code to Display 1 Earlier on this blog we had asked two puzzles. The response from all of you is nothing but Amazing. I have received 350+ responses. Many are valid and many were indeed something I had not thought about it. I strongly suggest you read all the puzzles and their answers here - trust me if you start reading the comments you will not stop till you read every single comment. Seriously trust me on it. Personally I have learned a lot from it. Identify Most Resource Intensive Queries – SQL in Sixty Seconds #028 – Video http://www.youtube.com/watch?v=TvlYy-TGaaA Importance of User Without Login – T-SQL Demo Script Earlier I wrote a blog post about SQL SERVER – Importance of User Without Login and my friend and SQL Expert Vinod Kumar has written excellent follow up blog post about Contained Databases inside SQL Server 2012. Now lots of people asked me if I can also explain the same concept again so here is the small demonstration for it. Let me show you how login without user can help. Before we continue on this subject I strongly recommend that you read my earlier blog post here. In following demo I am going to demonstrate following situation. Login using the System Admin account Create a user without login Checking Access Impersonate the user without login Checking Access Revert Impersonation Give Permission to user without login Impersonate the user without login Checking Access Revert Impersonation Clean up Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Memory Lane, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

  Read the article

• Subscript out of range error in VBScript script

  - by SteveW

  I'm trying to move my entire User folder in Windows Vista to a non-system partition. To do so with a minimum hassle I'm following the directions provided at Ben's Blog, specifically the VBScript he provides. However executing the script throws up an error which I can't resolve myself. Here's the VBScript code followed by the text file it works from, and finally my error message. How do I correct the problem? VBScript Code: '# Perform dir /a c:\users > c:\dir.txt '# place this script file in c:\ too '# double click to run it '# run resulting script.bat from recovery mode repprefix = " Directory of..." ' Modify to your language sourcedrive = "C:\" targetdrive = "D:\" altsourcedrive = "C:\" 'leave same as target drive unless otherwise indicated alttargetdrive = "E:\" 'leave same as target drive unless otherwise indicated inname = "dir.txt" outname = "script.bat" userroot = "Users" set fso = CreateObject("Scripting.FileSystemObject") ' construct batch commands for saving rights, then link, the recreating rights Function GetCommand(curroot, line, typ, keyword) ' first need to get source and target pos = Instr(line, keyword) + Len(keyword) tuple = Trim(Mid(line, pos)) arr = Split(tuple, "[") oldtarget = Replace(arr(1), "]", "") oldlink = curroot & "\" & Trim(arr(0)) ' need to determine if we are pointing back to old disk newlink = replace(oldlink, sourcedrive, targetdrive) if(Instr(oldtarget, sourcedrive & userroot)) then newtarget = Replace(oldtarget, sourcedrive, targetdrive) else newtarget = oldtarget ' still pointing to original target end if ' comment out = "echo " & newlink & " --- " & newtarget & vbCrLf ' save permissions out = out & "icacls """ & replace(oldlink, sourcedrive, altsourcedrive) & """ /L /save " & altsourcedrive & "permissions.txt" & vbCrLf ' create link newlink = replace(newlink, targetdrive, alttargetdrive) if typ = "junction" then out = out & "mklink /j """ & newlink & """ """ & newtarget & """" & vbCrLf else ' typ = "symlink" out = out & "mklink /d """ & newlink & """ """ & newtarget & """" & vbCrLf end if 'set hidden attribute out = out & "attrib +h """ & newlink & """ /L" & vbCrLf ' apply permissions shortlink = Left(newlink, InstrRev(newlink, "\") - 1) 'icacls works strangely - non-orthogonal for restore out = out & "icacls """ & shortlink & """ /L /restore " & altsourcedrive & "permissions.txt" & vbCrLf GetCommand = out & vbCrLf End Function Sub WriteToFile(file, text) ForWriting = 2 Create = true set outfile = fso.OpenTextFile(file, ForWriting, Create) Call outfile.Write(text) Call outfile.Close() End Sub outtext = "ROBOCOPY " & altsourcedrive & userroot & " " & alttargetdrive & userroot & " /E /COPYALL /XJ" & vbCrLf & vbCrLf set intext = fso.OpenTextFile(inname) while not intext.AtEndOfStream line = intext.ReadLine() if Instr(line, repprefix) then curroot = Replace(line, repprefix, "") elseif Instr(line, juncname) then outtext = outtext & GetCommand(curroot, line, "junction", juncname) elseif Instr(line, linkname) then outtext = outtext & GetCommand(curroot, line, "symlink", linkname) end if Wend outtext = outtext & "icacls " & altsourcedrive & userroot & " /L /save " & altsourcedrive & "permissions.txt" & vbCrLf outtext = outtext & "ren " & altsourcedrive & userroot & " _" & userroot & vbCrLf outtext = outtext & "mklink /j " & altsourcedrive & userroot & " " & targetdrive & userroot & vbCrLf outtext = outtext & "icacls " & altsourcedrive & " /L /restore " & altsourcedrive & "permissions.txt" Call intext.Close() Call WriteToFile(outname, outtext) MsgBox("Done writing to " & outname) dir.txt: Volume in drive C is ACER Volume Serial Number is 08D7-C0CC Directory of c:\users 07/16/2009 12:29 PM {DIR} . 07/16/2009 12:29 PM {DIR} .. 11/02/2006 09:02 AM {SYMLINKD} All Users [C:\ProgramData] 11/02/2006 09:02 AM {DIR} Default 11/02/2006 09:02 AM {JUNCTION} Default User [C:\Users\Default] 08/21/2008 08:37 AM 174 desktop.ini 11/02/2006 08:50 AM {DIR} Public 07/19/2009 08:54 PM {DIR} Steve 1 File(s) 174 bytes 7 Dir(s) 5,679,947,776 bytes free Error Message: Windows Script Host Script: C:\user location.vbs Line: 25 Char: 2 Error: Subscript out of range: '[number: 1]' Code: 800A0009 Source: Microsoft VBScript runtime error (In the VBScript script that I'm using on my system, I believe that 'Line 25' corresponds to the line beginning with oldtarget = Replace(arr(1), "]", "").

  Read the article

• built in "Offer Remote Assistance" not working because of permissions

  - by Caleb_S

  I'm trying to enable permissions for a user on a Windows7 machine to use the built in feature called "Offer Remote Assistance" or "Windows Remote Assistance". This feature works fine if the user is added to the "domain admins" security group, but for security reasons, I cannot leave him in that group. This is within a SBS2003 Domain. I have added the user and also a group that he is apart of to the Small Business Server Remote Assistance Policy, after following some documentation I was able to find, but this has not worked. Can you tell me how to enable this feature for this user and or a user group? http://content.screencast.com/users/CASEIT/folders/Forum%20Pictures/media/2a518bc9-4184-4520-8b76-cdf46555f568/2011-08-18_1330.png

  Read the article

• Making a Case For The Command Line

  - by Jesse Taber

  Originally posted on: http://geekswithblogs.net/GruffCode/archive/2013/06/30/making-a-case-for-the-command-line.aspxI have had an idea percolating in the back of my mind for over a year now that I’ve just recently started to implement. This idea relates to building out “internal tools” to ease the maintenance and on-going support of a software system. The system that I currently work on is (mostly) web-based, so we traditionally we have built these internal tools in the form of pages within the app that are only accessible by our developers and support personnel. These pages allow us to perform tasks within the system that, for one reason or another, we don’t want to let our end users perform (e.g. mass create/update/delete operations on data, flipping switches that turn paid modules of the system on or off, etc). When we try to build new tools like this we often struggle with the level of effort required to build them. Effort Required Creating a whole new page in an existing web application can be a fairly large undertaking. You need to create the page and ensure it will have a layout that is consistent with the other pages in the app. You need to decide what types of input controls need to go onto the page. You need to ensure that everything uses the same style as the rest of the site. You need to figure out what the text on the page should say. Then, when you figure out that you forgot about an input that should really be present you might have to go back and re-work the entire thing. Oh, and in addition to all of that, you still have to, you know, write the code that actually performs the task. Everything other than the code that performs the task at hand is just overhead. We don’t need a fancy date picker control in a nicely styled page for the vast majority of our internal tools. We don’t even really need a page, for that matter. We just need a way to issue a command to the application and have it, in turn, execute the code that we’ve written to accomplish a given task. All we really need is a simple console application! Plumbing Problems A former co-worker of mine, John Sonmez, always advocated the Unix philosophy for building internal tools: start with something that runs at the command line, and then build a UI on top of that if you need to. John’s idea has a lot of merit, and we tried building out some internal tools as simple Console applications. Unfortunately, this was often easier said that done. Doing a “File –> New Project” to build out a tool for a mature system can be pretty daunting because that new project is totally empty.  In our case, the web application code had a lot of of “plumbing” built in: it managed authentication and authorization, it handled database connection management for our multi-tenanted architecture, it managed all of the context that needs to follow a user around the application such as their timezone and regional/language settings. In addition, the configuration file for the web application  (a web.config in our case because this is an ASP .NET application) is large and would need to be reproduced into a similar configuration file for a Console application. While most of these problems are could be solved pretty easily with some refactoring of the codebase, building Console applications for internal tools still potentially suffers from one pretty big drawback: you’d have to execute them on a machine with network access to all of the needed resources. Obviously, our web servers can easily communicate the the database servers and can publish messages to our service bus, but the same is not true for all of our developer and support personnel workstations. We could have everyone run these tools remotely via RDP or SSH, but that’s a bit cumbersome and certainly a lot less convenient than having the tools built into the web application that is so easily accessible. Mix and Match So we need a way to build tools that are easily accessible via the web application but also don’t require the overhead of creating a user interface. This is where my idea comes into play: why not just build a command line interface into the web application? If it’s part of the web application we get all of the plumbing that comes along with that code, and we’re executing everything on the web servers which means we’ll have access to any external resources that we might need. Rather than having to incur the overhead of creating a brand new page for each tool that we want to build, we can create one new page that simply accepts a command in text form and executes it as a request on the web server. In this way, we can focus on writing the code to accomplish the task. If the tool ends up being heavily used, then (and only then) should we consider spending the time to build a better user experience around it. To be clear, I’m not trying to downplay the importance of building great user experiences into your system; we should all strive to provide the best UX possible to our end users. I’m only advocating this sort of bare-bones interface for internal consumption by the technical staff that builds and supports the software. This command line interface should be the “back end” to a highly polished and eye-pleasing public face. Implementation As I mentioned at the beginning of this post, this is an idea that I’ve had for awhile but have only recently started building out. I’ve outlined some general guidelines and design goals for this effort as follows: Text in, text out: In the interest of keeping things as simple as possible, I want this interface to be purely text-based. Users will submit commands as plain text, and the application will provide responses in plain text. Obviously this text will be “wrapped” within the context of HTTP requests and responses, but I don’t want to have to think about HTML or CSS when taking input from the user or displaying responses back to the user. Task-oriented code only: After building the initial “harness” for this interface, the only code that should need to be written to create a new internal tool should be code that is expressly needed to accomplish the task that the tool is intended to support. If we want to encourage and enable ourselves to build good tooling, we need to lower the barriers to entry as much as possible. Built-in documentation: One of the great things about most command line utilities is the ‘help’ switch that provides usage guidelines and details about the arguments that the utility accepts. Our web-based command line utility should allow us to build the documentation for these tools directly into the code of the tools themselves. I finally started trying to implement this idea when I heard about a fantastic open-source library called CLAP (Command Line Auto Parser) that lets me meet the guidelines outlined above. CLAP lets you define classes with public methods that can be easily invoked from the command line. Here’s a quick example of the code that would be needed to create a new tool to do something within your system: 1: public class CustomerTools 2: { 3: [Verb] 4: public void UpdateName(int customerId, string firstName, string lastName) 5: { 6: //invoke internal services/domain objects/hwatever to perform update 7: } 8: } This is just a regular class with a single public method (though you could have as many methods as you want). The method is decorated with the ‘Verb’ attribute that tells the CLAP library that it is a method that can be invoked from the command line. Here is how you would invoke that code: Parser.Run(args, new CustomerTools()); Note that ‘args’ is just a string[] that would normally be passed passed in from the static Main method of a Console application. Also, CLAP allows you to pass in multiple classes that define [Verb] methods so you can opt to organize the code that CLAP will invoke in any way that you like. You can invoke this code from a command line application like this: SomeExe UpdateName -customerId:123 -firstName:Jesse -lastName:Taber ‘SomeExe’ in this example just represents the name of .exe that is would be created from our Console application. CLAP then interprets the arguments passed in order to find the method that should be invoked and automatically parses out the parameters that need to be passed in. After a quick spike, I’ve found that invoking the ‘Parser’ class can be done from within the context of a web application just as easily as it can from within the ‘Main’ method entry point of a Console application. There are, however, a few sticking points that I’m working around: Splitting arguments into the ‘args’ array like the command line: When you invoke a standard .NET console application you get the arguments that were passed in by the user split into a handy array (this is the ‘args’ parameter referenced above). Generally speaking they get split by whitespace, but it’s also clever enough to handle things like ignoring whitespace in a phrase that is surrounded by quotes. We’ll need to re-create this logic within our web application so that we can give the ‘args’ value to CLAP just like a console application would. Providing a response to the user: If you were writing a console application, you might just use Console.WriteLine to provide responses to the user as to the progress and eventual outcome of the command. We can’t use Console.WriteLine within a web application, so I’ll need to find another way to provide feedback to the user. Preferably this approach would allow me to use the same handler classes from both a Console application and a web application, so some kind of strategy pattern will likely emerge from this effort. Submitting files: Often an internal tool needs to support doing some kind of operation in bulk, and the easiest way to submit the data needed to support the bulk operation is in a file. Getting the file uploaded and available to the CLAP handler classes will take a little bit of effort. Mimicking the console experience: This isn’t really a requirement so much as a “nice to have”. To start out, the command-line interface in the web application will probably be a single ‘textarea’ control with a button to submit the contents to a handler that will pass it along to CLAP to be parsed and run. I think it would be interesting to use some javascript and CSS trickery to change that page into something with more of a “shell” interface look and feel. I’ll be blogging more about this effort in the future and will include some code snippets (or maybe even a full blown example app) as I progress. I also think that I’ll probably end up either submitting some pull requests to the CLAP project or possibly forking/wrapping it into a more web-friendly package and open sourcing that.

  Read the article

• Apache2 MPM-prefork MPM-worker multiple instances on same Ubuntu host machine possible?

  - by user60985

  I have a live Apache2/MPM-Worker instance running Django. I want to also run an Apache2/MPM-prefork instance to run some Drupal6 applications on the same host machine and utilize a vast selection of PHP modules that run on the prefork model. I plan to use my MPM-worker instance to reverse proxy to the Apache2-prefork instance for URLS starting with myhost.com/drupal6/. It seems theoretically doable/configurable by having the second Apache2-prefork instance configured to listen on an internal port, say 127.0.0.1:8080 and having my current Apache2-worker configured to proxy pass and reverse pass to it for the 'drupal6' URLs. However, how do I compile or install the apache2-prefork version so it has a different executable name than /usr/sbin/apache2, for example /usr/sbin/apache2p, and so apache2ctl has a different name, say apache2pctl, and that apache2pctl invokes the /usr/sbin/apache2p instead of /usr/sbin/apache2... and so on down the line (eg /etc/apache2p) so I can start and restart my two instances independently? As I understand it, no one executable of 'apache2' can be compiled with both the MPM-prefork and MPM-worker modules, so it seems I need two separate versions of the apache2 MPM flavors. But then I need to invoke and control them by separate names, I assume. I looked at the configuration options for apache2 and I am a bit queasy about compiling a second apache2 version with prefork because I am not sure I can set all the options so that none of my current apache2 files is overwritten. Is there a way? Is there a standard solution to separately installing and controlling prefork and worker apache2 executables on the same machine without them stepping on each other during installation or operation?

  Read the article

• OS X SMB Connection to Windows Server 2008 R2

  - by Tawm

  I support many Macs that connect to an SMB share on a Windows Server 2008 R2 box. Occasionally I find that the Mac will try to connect and fail. The connection process will skip asking for credentials and there are none stored in keychain's password section. The server logs will show that the user tried to authenticate with invalid credentials. There are also no lingering connections from the server's point of view. The work around that I've found is to use an invalid username or a username that isn't the user's in the connection string for SMB so smb://domain;user@server/share instead of 'smb://server/share' this will force it to use the username I specified which the client doesn't have anything stored for. So it will then pop up the login window where the user changes the username to the correct one and user her password to connect happily. Specific computer in question: 15" MBP running Snow Leopard (10.6.7 or 10.6.8)

  Read the article

• Bash prompt doesn't print until I interact with console again

  - by durron597

  I don't even know where to begin to diagnose this one. Usually, when a command finishes, the prompt prints itself for the next command. However, that is not happening. Hard to explain with words, I'll just use an example: User@Machine:~$ cp /mnt/mountname/directory/textfile.txt . After waiting several seconds (far too long for this operation on a small file) I press Enter, and see: User@Machine:~$ cp /mnt/mountname/directory/textfile.txt . User@Machine:~$ User@Machine:~$ So clearly the operation had finished, but the prompt didn't display... until I pressed enter, and then BOTH prompts instantly displayed. This error does not happen with commands like cd.

  Read the article

• Increase application performance on Amazon AWS

  - by Honus Wagner

  I've got a client with an MVC v1 (.NET) application running on a micro instance. On this instance, I've got .NET, IIS 7.5, and MS SQL Server 2008 running to handle the application. The client has reported that it is taking nearly 10 seconds to process each request. Even loading the initial login page takes about that long, then logging in takes that long, etc etc. The currently running instance specs are as follows: 615 MB RAM Intel Xenon CPU E5430 @ 2.66GHz 2.78 GHz 64-Bit Is the memory availability the issue? or is it the processing power? I forsee two options: Change to a larget instance Set up a 2-tier architecture with two micro instances Which of these will give the application better performance? Thanks in advance.

  Read the article

• Creating Wizard in ASP.NET MVC (Part 1)

  - by bipinjoshi

  At times you want to accept user input in your web applications by presenting them with a wizard driven user interface. A wizard driven user interface allows you to logically divide and group pieces of information so that user can fill them up easily in step-by-step manner. While creating a wizard is easy in ASP.NET Web Forms applications, you need to implement it yourself in ASP.NET MVC applications. There are more than one approaches to creating a wizard in ASP.NET MVC and this article shows one of them. In Part 1 of this article you will develop a wizard that stores its data in ASP.NET Session and the wizard works on traditional form submission.http://www.binaryintellect.net/articles/9a5fe277-6e7e-43e5-8408-a28ff5be7801.aspx    

  Read the article

• Amazon EC2 Reserved Instances: "Heavy Utilization" clarification

  - by gravyface

  Should be another easy one here, but I need clarification on what they define as "heavy utilization" for Reserved Instance types. From their Website: Heavy Utilization RIs – Heavy Utilization RIs offer the most absolute savings of any Reserved Instance type. They’re most appropriate for steady-state workloads where you’re willing to commit to always running these instances in exchange for our lowest hourly usage fee. With this RI, you pay a little higher upfront payment than Medium Utilization RIs, a significantly lower hourly usage fee, and you’re charged that lower hourly rate for every hour in the Reserved Instance term you purchase. Using Heavy Utilization RIs, you can save up to 41% for a 1-year term and 58% for a 3-year term vs. running On-Demand Instances. If you’re trying to find a break-even utilization, you’re economically advantaged using Heavy Utilization RIs (vs. On-Demand Instances) if you plan to use your instance more than 43% of a 1-year term or 79% of a 3-year term. I'm assuming that, if I'm planning on running a 24/7 Web Server, then regardless of how many resources I consume (bandwidth, cpu cycles, memory), I would want to go with a Heavy Utilization Reserved Instance? This one Web Server in particular will likely barely budge the cpu, but it needs to be up and running 24/7. Not 100% on what they're defining as "heavy".

  Read the article

• security issue of Linux sudo command?

  - by George2

  Hello everyone, 1. I am using Red Hat Enterprise 5 Linux box. I find if a user is in /etc/sudoers file, then if the user run command with sudo, the user will run this command with root privilege (without knowing root password, the user runs sudo only need to input the user's own password in order to run a command with sudo). Is that correct understanding? 2. If yes, then is it a security hole? Since users other than root could run with root privilege? thanks in advance, George

  Read the article

< Previous Page | 416 417 418 419 420 421 422 423 424 425 426 427  | Next Page >