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Mylyn/Bugzilla Connector


Bugzilla Server Optimization

  • Tips for server administrators describes a solution taken by Eclipse.org webmasters to reduce the bandwidth requirements due to Mylyn clients updating their repository configuration.

GZIP encoding and content negotiation

The Mylyn Bugzilla Connector has been modified to accept gzip encoding on all requests, and will do content negotiation. See bug 205708.

Preventing excessive logfile fill up

  • When running /bugzilla/ locally, one can prevent Mylyn filling up the log files by adding this to httpd.conf:

<DirectoryMatch /bugzilla/ >
    BrowserMatchNoCase mylyn mylyn=1
</DirectoryMatch>
CustomLog "/private/var/log/httpd/access_log" combined env=!mylyn

Users

Langugage Configurations

Since Version 2.2 of Mylyn you can now add support for alternate languages via extension point:

org.eclipse.mylyn.bugzilla.core.languages


Here is an example definition for the English language (en (default)).

<extension 
        point="org.eclipse.mylyn.bugzilla.core.languages"> 
 <language name="en"> 
           <languageAttribute command="error_login" 		response="Login"/> 
           <languageAttribute command="error_login" 		response="log in"/> 
           <languageAttribute command="error_login" 		response="check e-mail"/> 
           <languageAttribute command="error_login" 		response="Invalid Username Or Password"/> 
           <languageAttribute command="error_collision" 	response="Mid-air collision!"/> 
           <languageAttribute command="error_comment_required" 	response="Comment Required"/> 
           <languageAttribute command="error_logged_out" 	response="logged out"/> 
           <languageAttribute command="bad_login" 		response="Login"/> 
           <languageAttribute command="bad_login" 		response="log in"/> 
           <languageAttribute command="bad_login" 		response="check e-mail"/> 
           <languageAttribute command="bad_login" 		response="Invalid Username Or Password"/> 
           <languageAttribute command="bad_login" 		response="error"/> 
           <languageAttribute command="processed" 		response="processed"/> 
           <languageAttribute command="changes_submitted" 	response="Changes submitted"/>
           <languageAttribute command="error_confirm_match" 	response="confirm match"/>
  </language>
</extension>

Here is the detail description.

We have the following seven Commands defined in Mylyn:

Command Class & Method usage
error_login BugzillaClient.parseHtmlError detect login errrors
error_collision BugzillaClient.parseHtmlError detect a midair collision
error_comment_required BugzillaClient.parseHtmlError detect if a comment is required
error_logged_out BugzillaClient.parseHtmlError detect if the user is logged out
changes_submitted BugzillaClient.parseHtmlError changes are submitted (no real error)
processed BugzillaClient.postTaskData process was successful
bad_login BugzillaTaskHistoryParser.retrieveHistory detect bad login
error_confirm_match BugzillaClient.parseHtmlError responce if usermatchmode is enabled


For every Action there must be one or more responses.

Here is and example where the English responses for bugzilla-3.0.1 were found.

Text File Line
processed template/en/default/bug/process/header.html.tmpl 37
"Mid-air collision!" template/en/default/bug/process/header.html.tmpl 40
"Comment Required" template/en/default/global/user-error.html.tmpl 241
"Invalid Username Or Password" template/en/default/global/user-error.html.tmpl 822
'bug' => "Changes submitted for $link" template/en/default/bug/process/results.html.tmpl 45
Login currently not known
log in currently not known
check e-mail currently not known
logged out currently not known
"confirm match" template/en/default/global/confirm-user-match.html.tmpl 43

You must look for the tranlated responses in templates of the other language.

Custom Transitions

Custom Workflows have been enabled in Bugzilla since Bugzilla 3.2. As the first stage of efforts to make Mylyn detect these workflows, Mylyn has been given the ability to parse a workflow description file to pick up custom transitions and custom statuses. For example, if you are using Mylyn to connect to a Bugzilla instance which uses customized bug statuses, you will find it useful to craft the right custom transition description file and properly specify it in your task repository properties.

Here is a simplified example:

 CustomStatusNames=true
 DuplicateStatus=CLOSED
 StartStatus=UNCONFIRMED
 ClosedCustomStatus=POST
 <transitions>
 name :UNCONFIRMED:, can_change_to :NEW,POST,CLOSED:
 name :NEW:, can_change_to :POST,CLOSED:

The first part of the file details some configuration details

  1. CustomStatusNames indicates whether custom statuses are used. Defaults to false if unspecified.
  2. DuplicateStatus is the value of duplicate_or_move_bug_status in the Bugzilla Bug Change Policies. Defaults to RESOLVED if unspecified.
  3. StartStatus is the status to use for newly submitted bugs. Defaults to NEW if unspecified.
  4. ClosedCustomStatus is a list of custom statuses which leave the bug in a closed state. Defaults to an empty list if unspecified.
  5. The <transitions> marker is used to indicate the beginning of the transitions list.

Transitions should follow the format:

 name :CURRENT_STATUS:, can_change_to :NEXT_STATUS1,NEXT_STATUS2,NEXT_STATUS3:

Note that "name" and "can_change_to" are keywords and must not be changed. Usually, you'd want to create one line per custom status of your Bugzilla instance. Say your custom statuses are UNCONFIRMED, ON_QA, MODIFIED and CLOSED. In order to be able to change to any one of those statuses, you'd need something like the following in your custom transitions description file:

 name :ON_QA:, can_change_to :CLOSED:
 name :UNCONFIRMED:, can_change_to :MODIFIED:
 name :CLOSED:, can_change_to :MODIFIED:
 name :MODIFIED:, can_change_to :ON_QA:

Additional tags will be added as needed to accurate describe a Bugzilla installation. Installations of Bugzilla 3.6 or higher that do not need a custom Start Status or Duplicate Status can use the Autodetect workflow option to detect workflow customizations.

Developer Resources

Mylyn Offline Refactoring