Buildbot v0.8.5 documentation

Status Targets

The Buildmaster has a variety of ways to present build status to various users. Each such delivery method is a Status Target object in the configuration's status list. To add status targets, you just append more objects to this list:

c['status'] = []

from buildbot.status import html

from buildbot.status import mail
m = mail.MailNotifier(fromaddr="buildbot@localhost",

from buildbot.status import words
c['status'].append(words.IRC(host="", nick="bb",
                             channels=[{"channel": "#example1"},
                                       {"channel": "#example2",
                                        "password": "somesecretpassword"}]))

Most status delivery objects take a categories= argument, which can contain a list of category names: in this case, it will only show status for Builders that are in one of the named categories.


Implementation Note

Each of these objects should be a service.MultiService which will be attached to the BuildMaster object when the configuration is processed. They should use self.parent.getStatus() to get access to the top-level IStatus object, either inside startService or later. They may call status.subscribe in startService to receive notifications of builder events, in which case they must define builderAdded and related methods. See the docstrings in buildbot/ for full details.

The remainder of this section describes each built-in status target. A full list of status targets is available in the Status Target Index.


class buildbot.status.web.baseweb.WebStatus

The buildbot.status.html.WebStatus status target runs a small web server inside the buildmaster. You can point a browser at this web server and retrieve information about every build the buildbot knows about, as well as find out what the buildbot is currently working on.

The first page you will see is the Welcome Page, which contains links to all the other useful pages. By default, this page is served from the status/web/templates/root.html file in buildbot's library area. If you'd like to override this page or the other templates found there, copy the files you're interested in into a templates/ directory in the buildmaster's base directory.

One of the most complex resource provided by WebStatus is the Waterfall Display, which shows a time-based chart of events. This somewhat-busy display provides detailed information about all steps of all recent builds, and provides hyperlinks to look at individual build logs and source changes. By simply reloading this page on a regular basis, you will see a complete description of everything the buildbot is currently working on.

A similar, but more developer-oriented display is the Grid display. This arranges builds by SourceStamp (horizontal axis) and builder (vertical axis), and can provide quick information as to which revisions are passing or failing on which builders.

There are also pages with more specialized information. For example, there is a page which shows the last 20 builds performed by the buildbot, one line each. Each line is a link to detailed information about that build. By adding query arguments to the URL used to reach this page, you can narrow the display to builds that involved certain branches, or which ran on certain Builders. These pages are described in great detail below.


Buildbot now uses a templating system for the web interface. The source of these templates can be found in the status/web/templates/ directory in buildbot's library area. You can override these templates by creating alternate versions in a templates/ directory within the buildmaster's base directory.

The first time a buildmaster is created, the public_html/ directory is populated with some sample files, which you will probably want to customize for your own project. These files are all static: the buildbot does not modify them in any way as it serves them to HTTP clients.

Note that templates in templates/ take precedence over static files in public_html/.

from buildbot.status.html import WebStatus

Note that the initial robots.txt file has Disallow lines for all of the dynamically-generated buildbot pages, to discourage web spiders and search engines from consuming a lot of CPU time as they crawl through the entire history of your buildbot. If you are running the buildbot behind a reverse proxy, you'll probably need to put the robots.txt file somewhere else (at the top level of the parent web server), and replace the URL prefixes in it with more suitable values.

If you would like to use an alternative root directory, add the public_html= option to the WebStatus creation:

c['status'].append(WebStatus(8080, public_html="/var/www/buildbot"))

In addition, if you are familiar with twisted.web Resource Trees, you can write code to add additional pages at places inside this web space. Just use webstatus.putChild to place these resources.

The following section describes the special URLs and the status views they provide.

Buildbot Web Resources

Certain URLs are magic, and the pages they serve are created by code in various classes in the buildbot.status.web package instead of being read from disk. The most common way to access these pages is for the buildmaster admin to write or modify the index.html page to contain links to them. Of course other project web pages can contain links to these buildbot pages as well.

Many pages can be modified by adding query arguments to the URL. For example, a page which shows the results of the most recent build normally does this for all builders at once. But by appending ?builder=i386 to the end of the URL, the page will show only the results for the i386 builder. When used in this way, you can add multiple builder= arguments to see multiple builders. Remembering that URL query arguments are separated from each other with ampersands, a URL that ends in ?builder=i386&builder=ppc would show builds for just those two Builders.

The branch= query argument can be used on some pages. This filters the information displayed by that page down to only the builds or changes which involved the given branch. Use branch=trunk to reference the trunk: if you aren't intentionally using branches, you're probably using trunk. Multiple branch= arguments can be used to examine multiple branches at once (so appending ?branch=foo&branch=bar to the URL will show builds involving either branch). No branch= arguments means to show builds and changes for all branches.

Some pages may include the Builder name or the build number in the main part of the URL itself. For example, a page that describes Build #7 of the i386 builder would live at /builders/i386/builds/7.

The table below lists all of the internal pages and the URLs that can be used to access them.


This provides a chronologically-oriented display of the activity of all builders. It is the same display used by the Waterfall display.

By adding one or more builder= query arguments, the Waterfall is restricted to only showing information about the given Builders. By adding one or more branch= query arguments, the display is restricted to showing information about the given branches. In addition, adding one or more category= query arguments to the URL will limit the display to Builders that were defined with one of the given categories.

A show_events=true query argument causes the display to include non-Build events, like slaves attaching and detaching, as well as reconfiguration events. show_events=false hides these events. The default is to show them.

By adding the failures_only=true query argument, the Waterfall is restricted to only showing information about the builders that are currently failing. A builder is considered failing if the last finished build was not successful, a step in the current build(s) is failing, or if the builder is offline.

The last_time=, first_time=, and show_time= arguments will control what interval of time is displayed. The default is to show the latest events, but these can be used to look at earlier periods in history. The num_events= argument also provides a limit on the size of the displayed page.

The Waterfall has references to resources many of the other portions of the URL space: /builders for access to individual builds, /changes for access to information about source code changes, etc.


This provides a chronologically oriented display of builders, by revision. The builders are listed down the left side of the page, and the revisions are listed across the top.

By adding one ore more category= arguments the grid will be restricted to revisions in those categories.

A width=N argument will limit the number of revisions shown to N, defaulting to 5.

A branch=BRANCHNAME argument will limit the grid to revisions on branch BRANCHNAME.


The Transposed Grid is similar to the standard grid, but, as the name implies, transposes the grid: the revisions are listed down the left side of the page, and the build hosts are listed across the top. It accepts the same query arguments. The exception being that instead of width the argument is named length.

This page also has a rev_order= query argument that lets you change in what order revisions are shown. Valid values are asc (ascending, oldest revision first) and desc (descending, newest revision first).


EXPERIMENTAL: This provides a developer-oriented display of the the last changes and how they affected the builders.

It allows a developer to quickly see the status of each builder for the first build including his or her change. A green box means that the change succeeded for all the steps for a given builder. A red box means that the changed introduced a new regression on a builder. An orange box means that at least one of the test failed, but it was also failing in the previous build, so it is not possible to see if there was any regressions from this change. Finally a yellow box means that the test is in progress.

By adding one or more builder= query arguments, the Console view is restricted to only showing information about the given Builders.Adding a repository= argument will limit display to a given repository. By adding one or more branch= query arguments, the display is restricted to showing information about the given branches. In addition, adding one or more category= query arguments to the URL will limit the display to Builders that were defined with one of the given categories. With the project= query argument, it's possible to restrict the view to changes from the given project.

By adding one or more name= query arguments to the URL, the console view is restricted to only showing changes made by the given users.

NOTE: To use this page, your buildbot.css file in public_html must be the one found in master/buildbot/status/web/files/default.css. This is the default for new installs, but upgrades of very old installs of Buildbot may need to manually fix the CSS file.

The console view is still in development. At this moment by default the view sorts revisions lexically, which can lead to odd behavior with non-integer revisions (e.g., git), or with integer revisions of different length (e.g., 999 and 1000). It also has some issues with displaying multiple braches at the same time. If you do have multiple branches, you should use the branch= query argument. The order_console_by_time option may help sorting revisions, although it depends on the date being set correctly in each commit:

w = html.WebStatus(http_port=8080, order_console_by_time=True)
This provides a rss feed summarizing all failed builds. The same query-arguments used by 'waterfall' can be added to filter the feed output.
This provides an atom feed summarizing all failed builds. The same query-arguments used by 'waterfall' can be added to filter the feed output.
This view provides quick access to Buildbot status information in a form that is easiliy digested from other programs, including JavaScript. See /json/help for detailed interactive documentation of the output formats for this view.
This displays a waterfall-like chronologically-oriented view of all the steps for a given build number on a given builder.
This describes the given Builder and provides buttons to force a build. A numbuilds= argument will control how many build lines are displayed (5 by default).
This describes a specific Build.
This describes a specific BuildStep.
This provides an HTML representation of a specific logfile.
This returns the logfile as plain text, without any HTML coloring markup. It also removes the headers, which are the lines that describe what command was run and what the environment variable settings were like. This maybe be useful for saving to disk and feeding to tools like grep.
This provides a brief description of the ChangeSource in use (see Change Sources).
This shows detailed information about the numbered Change: who was the author, what files were changed, what revision number was represented, etc.

This summarizes each BuildSlave, including which Builders are configured to use it, whether the buildslave is currently connected or not, and host information retrieved from the buildslave itself.

A no_builders=1 URL argument will omit the builders column. This is useful if each buildslave is assigned to a large number of builders.


This page shows one line of text for each build, merging information from all Builders [1]. Each line specifies the name of the Builder, the number of the Build, what revision it used, and a summary of the results. Successful builds are in green, while failing builds are in red. The date and time of the build are added to the right-hand edge of the line. The lines are ordered by build finish timestamp.

One or more builder= or branch= arguments can be used to restrict the list. In addition, a numbuilds= argument will control how many lines are displayed (20 by default).


This page shows a small table, with one box for each Builder, containing the results of the most recent Build. It does not show the individual steps, or the current status. This is a simple summary of buildbot status: if this page is green, then all tests are passing.

As with /one_line_per_build, this page will also honor builder= and branch= arguments.

This page exists for authentication reasons when checking showUsersPage. It'll redirect to /authfail on False, /users/table on True, and give a username/password login prompt on 'auth'. Passing or failing results redirect to the same pages as False and True.
This page shows a table containing users that are stored in the database. It has columns for their respective uid and identifier values, with the uid values being clickable for more detailed information relating to a user.
Shows all the attributes stored in the database relating to the user with uid {NN} in a table.
This page gives a brief summary of the Buildbot itself: software version, versions of some libraries that the Buildbot depends upon, etc. It also contains a link to the home page.

There are also a set of web-status resources that are intended for use by other programs, rather than humans.

This provides an endpoint for web-based source change notification. It is used by GitHub and contrib/ See Change Hooks for more details.

WebStatus Configuration Parameters

HTTP Connection

The most common way to run a WebStatus is on a regular TCP port. To do this, just pass in the TCP port number when you create the WebStatus instance; this is called the http_port argument:

from buildbot.status.html import WebStatus

The http_port argument is actually a strports specification for the port that the web server should listen on. This can be a simple port number, or a string like http_port="tcp:8080:interface=" (to limit connections to the loopback interface, and therefore to clients running on the same host) [2].

If instead (or in addition) you provide the distrib_port argument, a twisted.web distributed server will be started either on a TCP port (if distrib_port is like "tcp:12345") or more likely on a UNIX socket (if distrib_port is like "unix:/path/to/socket").

The public_html option gives the path to a regular directory of HTML files that will be displayed alongside the various built-in URLs buildbot supplies. This is most often used to supply CSS files (/buildbot.css) and a top-level navigational file (/index.html), but can also serve any other files required - even build results!


The buildbot web status is, by default, read-only. It displays lots of information, but users are not allowed to affect the operation of the buildmaster. However, there are a number of supported activities that can be enabled, and Buildbot can also perform rudimentary username/password authentication. The actions are:

force a particular builder to begin building, optionally with a specific revision, branch, etc.
force all builders to start building
"ping" a builder's buildslaves to check that they are alive
gracefully shut down a slave when it is finished with its current build
stop a running build
stop all running builds
cancel a build that has not yet started
cancel builds that include a given change number
shut down the master gracefully, without interrupting builds
access to page displaying users in the database, see User Objects

For each of these actions, you can configure buildbot to never allow the action, always allow the action, allow the action to any authenticated user, or check with a function of your creation to determine whether the action is OK.

This is all configured with the Authz class:

from buildbot.status.html import WebStatus
from buildbot.status.web.authz import Authz
authz = Authz(
c['status'].append(WebStatus(http_port=8080, authz=authz))

Each of the actions listed above is an option to Authz. You can specify False (the default) to prohibit that action or True to enable it.


If you do not wish to allow strangers to perform actions, but do want developers to have such access, you will need to add some authentication support. Pass an instance of status.web.auth.IAuth as a auth keyword argument to Authz, and specify the action as "auth".

from buildbot.status.html import WebStatus
from buildbot.status.web.authz import Authz
from buildbot.status.web.auth import BasicAuth
users = [('bob', 'secret-pass'), ('jill', 'super-pass')]
authz = Authz(auth=BasicAuth(users),
    forceBuild='auth', # only authenticated users
    pingBuilder=True, # but anyone can do this
c['status'].append(WebStatus(http_port=8080, authz=authz))
# or
from buildbot.status.web.auth import HTPasswdAuth
auth = (HTPasswdAuth('/path/to/htpasswd'))
# or
from buildbot.status.web.auth import UsersAuth
auth = UsersAuth()

The class BasicAuth implements a basic authentication mechanism using a list of user/password tuples provided from the configuration file. The class HTPasswdAuth implements an authentication against an .htpasswd file. The UsersAuth works with User Objects to check for valid user credentials.

If you need still-more flexibility, pass a function for the authentication action. That function will be called with an authenticated username and some action-specific arguments, and should return true if the action is authorized.

def canForceBuild(username, builder_status):
    if builder_status.getName() == 'smoketest':
        return True # any authenticated user can run smoketest
    elif username == 'releng':
        return True # releng can force whatever they want
        return False # otherwise, no way.

authz = Authz(auth=BasicAuth(users),

The forceBuild and pingBuilder actions both supply a BuilderStatus object. The stopBuild action supplies a BuildStatus object. The cancelPendingBuild action supplies a BuildRequest. The remainder do not supply any extra arguments.

Logging configuration

The WebStatus uses a separate log file (http.log) to avoid clutter buildbot's default log (twistd.log) with request/response messages. This log is also, by default, rotated in the same way as the twistd.log file, but you can also customize the rotation logic with the following parameters if you need a different behaviour.

An integer defining the file size at which log files are rotated.
The maximum number of old log files to keep.

URL-decorating options

These arguments adds an URL link to various places in the WebStatus, such as revisions, repositories, projects and, optionally, ticket/bug references in change comments.


A dictionary from strings to strings, mapping project names to URLs, or a callable taking a project name and returning an URL.


Same as the projects arg above, a dict or callable mapping project names to URLs.

Display-Specific Options

The order_console_by_time option affects the rendering of the console; see the description of the console above.

The numbuilds option determines the number of builds that most status displays will show. It can usually be overriden in the URL, e.g., ?numbuilds=13.

The num_events option gives the default number of events that the waterfall will display. The num_events_max gives the maximum number of events displayed, even if the web browser requests more.

Change Hooks

The /change_hook url is a magic URL which will accept HTTP requests and translate them into changes for buildbot. Implementations (such as a trivial json-based endpoint and a GitHub implementation) can be found in master/buildbot/status/web/hooks. The format of the url is /change_hook/DIALECT where DIALECT is a package within the hooks directory. Change_hook is disabled by default and each DIALECT has to be enabled separately, for security reasons

An example WebStatus configuration line which enables change_hook and two DIALECTS:

                          'base': True,
                          'somehook': {'option1':True,

Within the WebStatus arguments, the change_hook key enables/disables the module and change_hook_dialects whitelists DIALECTs where the keys are the module names and the values are optional arguments which will be passed to the hooks.

The script in master/contrib allows for the submission of an arbitrary change request. Run --help for more information. The base dialect must be enabled for this to work.

github hook

The GitHub hook is simple and takes no options.

                   change_hook_dialects={ 'github' : True }))

With this set up, add a Post-Receive URL for the project in the GitHub administrative interface, pointing to /change_hook/github relative to the root of the web status. For example, if the grid URL is, then point GitHub to To specify a project associated to the repository, append ?project=name to the URL.

Note that there is a standalone HTTP server available for receiving GitHub notifications, as well: contrib/ This script may be useful in cases where you cannot expose the WebStatus for public consumption.


class buildbot.status.mail.MailNotifier

The buildbot can also send email when builds finish. The most common use of this is to tell developers when their change has caused the build to fail. It is also quite common to send a message to a mailing list (usually named builds or similar) about every build.

The MailNotifier status target is used to accomplish this. You configure it by specifying who mail should be sent to, under what circumstances mail should be sent, and how to deliver the mail. It can be configured to only send out mail for certain builders, and only send messages when the build fails, or when the builder transitions from success to failure. It can also be configured to include various build logs in each message.

By default, the message will be sent to the Interested Users list (Doing Things With Users), which includes all developers who made changes in the build. You can add additional recipients with the extraRecipients argument. You can also add interested users by setting the owners build property to a list of users in the scheduler constructor (Configuring Schedulers).

Each MailNotifier sends mail to a single set of recipients. To send different kinds of mail to different recipients, use multiple MailNotifiers.

The following simple example will send an email upon the completion of each build, to just those developers whose Changes were included in the build. The email contains a description of the Build, its results, and URLs where more information can be obtained.

from buildbot.status.mail import MailNotifier
mn = MailNotifier(fromaddr="", lookup="")

To get a simple one-message-per-build (say, for a mailing list), use the following form instead. This form does not send mail to individual developers (and thus does not need the lookup= argument, explained below), instead it only ever sends mail to the extra recipients named in the arguments:

mn = MailNotifier(fromaddr="",

If your SMTP host requires authentication before it allows you to send emails, this can also be done by specifying smtpUser and smptPassword:

mn = MailNotifier(fromaddr="",
                  relayhost="", smtpPort=587,
                  smtpUser="", smtpPassword="mypassword")

If you want to require Transport Layer Security (TLS), then you can also set useTls:

mn = MailNotifier(fromaddr="",
                  useTls=True, relayhost="", smtpPort=587,
                  smtpUser="", smtpPassword="mypassword")


If you see twisted.mail.smtp.TLSRequiredError exceptions in the log while using TLS, this can be due either to the server not supporting TLS or to a missing PyOpenSSL package on the buildmaster system.

In some cases it is desirable to have different information then what is provided in a standard MailNotifier message. For this purpose MailNotifier provides the argument messageFormatter (a function) which allows for the creation of messages with unique content.

For example, if only short emails are desired (e.g., for delivery to phones)

from buildbot.status.builder import Results
def messageFormatter(mode, name, build, results, master_status):
    result = Results[results]

    text = list()
    text.append("STATUS: %s" % result.title())
    return {
        'body' : "\n".join(text),
        'type' : 'plain'

mn = MailNotifier(fromaddr="",

Another example of a function delivering a customized html email containing the last 80 log lines of logs of the last build step is given below:

from buildbot.status.builder import Results

def html_message_formatter(mode, name, build, results, master_status):
    """Provide a customized message to Buildbot's MailNotifier.

    The last 80 lines of the log are provided as well as the changes
    relevant to the build.  Message content is formatted as html.
    result = Results[results]

    limit_lines = 80
    text = list()
    text.append(u'<h4>Build status: %s</h4>' % result.upper())
    text.append(u'<table cellspacing="10"><tr>')
    text.append(u"<td>Buildslave for this Build:</td><td><b>%s</b></td></tr>" % build.getSlavename())
    if master_status.getURLForThing(build):
        text.append(u'<tr><td>Complete logs for all build steps:</td><td><a href="%s">%s</a></td></tr>'
                    % (master_status.getURLForThing(build),
        text.append(u'<tr><td>Build Reason:</td><td>%s</td></tr>' % build.getReason())
        source = u""
        ss = build.getSourceStamp()
        if ss.branch:
            source += u"[branch %s] " % ss.branch
        if ss.revision:
            source +=  ss.revision
            source += u"HEAD"
        if ss.patch:
            source += u" (plus patch)"
        if ss.patch_info: # add patch comment
            source += u" (%s)" % ss.patch_info[1]
            source +=
        text.append(u"<tr><td>Build Source Stamp:</td><td><b>%s</b></td></tr>" % source)
        text.append(u"<tr><td>Blamelist:</td><td>%s</td></tr>" % ",".join(build.getResponsibleUsers()))
        if ss.changes:
            text.append(u'<h4>Recent Changes:</h4>')
            for c in ss.changes:
                cd = c.asDict()
                when = datetime.datetime.fromtimestamp(cd['when'] ).ctime()
                text.append(u'<table cellspacing="10">')
                text.append(u'<tr><td>Repository:</td><td>%s</td></tr>' % cd['repository'] )
                text.append(u'<tr><td>Project:</td><td>%s</td></tr>' % cd['project'] )
                text.append(u'<tr><td>Time:</td><td>%s</td></tr>' % when)
                text.append(u'<tr><td>Changed by:</td><td>%s</td></tr>' % cd['who'] )
                text.append(u'<tr><td>Comments:</td><td>%s</td></tr>' % cd['comments'] )
                files = cd['files']
                if files:
                    text.append(u'<table cellspacing="10"><tr><th align="left">Files</th><th>URL</th></tr>')
                    for file in files:
                        text.append(u'<tr><td>%s:</td><td>%s</td></tr>' % (file['name'], file['url']))
        # get log for last step
        logs = build.getLogs()
        # logs within a step are in reverse order. Search back until we find stdio
        for log in reversed(logs):
            if log.getName() == 'stdio':
        name = "%s.%s" % (log.getStep().getName(), log.getName())
        status, dummy = log.getStep().getResults()
        content = log.getText().splitlines() # Note: can be VERY LARGE
        url = u'%s/steps/%s/logs/%s' % (master_status.getURLForThing(build),

        text.append(u'<i>Detailed log of last build step:</i> <a href="%s">%s</a>'
                    % (url, url))
        text.append(u'<h4>Last %d lines of "%s"</h4>' % (limit_lines, name))
        unilist = list()
        for line in content[len(content)-limit_lines:]:
        text.append(u'<pre>'.join([uniline for uniline in unilist]))
        text.append(u'<b>-The Buildbot</b>')
        return {
            'body': u"\n".join(text),
            'type': 'html'

mn = MailNotifier(fromaddr="",

MailNotifier arguments

The email address to be used in the 'From' header.
(boolean). If True (the default), send mail to all of the Interested Users. If False, only send mail to the extraRecipients list.
(list of strings). A list of email addresses to which messages should be sent (in addition to the InterestedUsers list, which includes any developers who made Changes that went into this build). It is a good idea to create a small mailing list and deliver to that, then let subscribers come and go as they please.
(string). A string to be used as the subject line of the message. %(builder)s will be replaced with the name of the builder which provoked the message.

(string). Default to all. One of:

Send mail about all builds, both passing and failing
Only send mail about builds which change status
Only send mail about builds which fail
Only send mail about builds which fail or generate warnings
Only send mail about builds which succeed
Only send mail about a build which failed when the previous build has passed. If your builds usually pass, then this will only send mail when a problem occurs.
(list of strings). A list of builder names for which mail should be sent. Defaults to None (send mail for all builds). Use either builders or categories, but not both.
(list of strings). A list of category names to serve status information for. Defaults to None (all categories). Use either builders or categories, but not both.
(boolean). If True, include all build logs as attachments to the messages. These can be quite large. This can also be set to a list of log names, to send a subset of the logs. Defaults to False.
(boolean). If True, include the patch content if a patch was present. Patches are usually used on a Try server. Defaults to True.
(boolean). If True, send a single summary email consisting of the concatenation of all build completion messages rather than a completion message for each build. Defaults to False.
(string). The host to which the outbound SMTP connection should be made. Defaults to 'localhost'
(int). The port that will be used on outbound SMTP connections. Defaults to 25.
(boolean). When this argument is True (default is False) MailNotifier sends emails using TLS and authenticates with the relayhost. When using TLS the arguments smtpUser and smtpPassword must also be specified.
(string). The user name to use when authenticating with the relayhost.
(string). The password that will be used when authenticating with the relayhost.

(implementor of IEmailLookup). Object which provides IEmailLookup, which is responsible for mapping User names (which come from the VC system) into valid email addresses. If not provided, the MailNotifier will attempt to build the sendToInterestedUsers from the authors of the Changes that led to the Build via User Objects. If the author of one of the Build's Changes has an email address stored, it will added to the recipients list. With this method, owners are still added to the recipients.

In either case, MailNotifier will also send mail to addresses in the extraRecipients list. Most of the time you can use a simple Domain instance. As a shortcut, you can pass as string: this will be treated as if you had provided Domain(str). For example, lookup='' will allow mail to be sent to all developers whose SVN usernames match their account names. See buildbot/status/ for more details.

This is a optional function that can be used to generate a custom mail message. A messageFormatter function takes the mail mode (mode), builder name (name), the build status (build), the result code (results), and the BuildMaster status (master_status). It returns a dictionary. The body key gives a string that is the complete text of the message. The type key is the message type ('plain' or 'html'). The 'html' type should be used when generating an HTML message. The subject key is optional, but gives the subject for the email.
(dictionary) A dictionary containing key/value pairs of extra headers to add to sent e-mails. Both the keys and the values may be a WithProperties instance.

As a help to those writing messageFormatter functions, the following table describes how to get some useful pieces of information from the various status objects:

Name of the builder that generated this event
Name of the project
MailNotifier mode
mode (one of all, failing, problem, change, passing)

Builder result as a string

from buildbot.status.builder import Results
result_str = Results[results]
# one of 'success', 'warnings', 'failure', 'skipped', or 'exception'
URL to build page
URL to buildbot main page.
Build text
Mapping of property names to values
build.getProperties() (a Properties instance)
Slave name
Build reason (from a forced build)
List of responsible users

Source information (only valid if ss is not None)

ss = build.getSourceStamp()
if ss:
    branch = ss.branch
    revision = ss.revision
    patch = ss.patch
    changes = ss.changes # list

A change object has the following useful information:

(str) who made this change
(str) what VC revision is this change
(str) on what branch did this change occur
(str) when did this change occur
(list of str) what files were affected in this change
(str) comments reguarding the change.

The Change methods asText and asDict can be used to format the information above. asText returns a list of strings and asDict returns a dictonary suitable for html/mail rendering.

Log information

logs = list()
for log in build.getLogs():
    log_name = "%s.%s" % (log.getStep().getName(), log.getName())
    log_status, dummy = log.getStep().getResults()
    log_body = log.getText().splitlines() # Note: can be VERY LARGE
    log_url = '%s/steps/%s/logs/%s' % (master_status.getURLForThing(build),
    logs.append((log_name, log_url, log_body, log_status))


class buildbot.status.words.IRC

The buildbot.status.words.IRC status target creates an IRC bot which will attach to certain channels and be available for status queries. It can also be asked to announce builds as they occur, or be told to shut up.

from buildbot.status import words
irc = words.IRC("", "botnickname",
                channels=[{"channel": "#example1"},
                          {"channel": "#example2",
                           "password": "somesecretpassword"}],
                  'exception': 1,
                  'successToFailure': 1,
                  'failureToSuccess': 1,

Take a look at the docstring for words.IRC for more details on configuring this service. Note that the useSSL option requires PyOpenSSL. The password argument, if provided, will be sent to Nickserv to claim the nickname: some IRC servers will not allow clients to send private messages until they have logged in with a password. We can also specify a different port number. Default value is 6667.

To use the service, you address messages at the buildbot, either normally (botnickname: status) or with private messages (/msg botnickname status). The buildbot will respond in kind.

If you issue a command that is currently not available, the buildbot will respond with an error message. If the noticeOnChannel=True option was used, error messages will be sent as channel notices instead of messaging. The default value is noticeOnChannel=False.

Some of the commands currently available:

list builders
Emit a list of all configured builders
status BUILDER
Announce the status of a specific Builder: what it is doing right now.
status all
Announce the status of all Builders
If the given Builder is currently running, wait until the Build is finished and then announce the results.
Return the results of the last build to run on the given Builder.
Join the given IRC channel
Leave the given IRC channel
notify on|off|list EVENT

Report events relating to builds. If the command is issued as a private message, then the report will be sent back as a private message to the user who issued the command. Otherwise, the report will be sent to the channel. Available events to be notified are:

A build has started
A build has finished
A build finished successfully
A build failed
A build generated and exception
The previous build was x, but this one is Y, where x and Y are each one of success, warnings, failure, exception (except Y is capitalized). For example: successToFailure will notify if the previous build was successful, but this one failed
Describe a command. Use help commands to get a list of known commands.
Announce the URL of the Buildbot's home page.
Announce the version of this Buildbot.

Additionally, the config file may specify default notification options as shown in the example earlier.

If the allowForce=True option was used, some addtional commands will be available:

force build [--branch=BRANCH] [--revision=REVISION] [--props=PROP1=VAL1,PROP2=VAL2...] BUILDER REASON
Tell the given Builder to start a build of the latest code. The user requesting the build and REASON are recorded in the Build status. The buildbot will announce the build's status when it finishes.The user can specify a branch and/or revision with the optional parameters --branch=BRANCH and --revision=REVISION. The user can also give a list of properties with --props=PROP1=VAL1,PROP2=VAL2...
Terminate any running build in the given Builder. REASON will be added to the build status to explain why it was stopped. You might use this if you committed a bug, corrected it right away, and don't want to wait for the first build (which is destined to fail) to complete before starting the second (hopefully fixed) build.

If the categories is set to a category of builders (see the categories option in Builder Configuration) changes related to only that category of builders will be sent to the channel.

If the useRevisions option is set to True, the IRC bot will send status messages that replace the build number with a list of revisions that are contained in that build. So instead of seeing build #253 of ..., you would see something like build containing revisions [a87b2c4]. Revisions that are stored as hashes are shortened to 7 characters in length, as multiple revisions can be contained in one build and may exceed the IRC message length limit.

Two additional arguments can be set to control how fast the IRC bot tries to reconnect when it encounters connection issues. lostDelay is the number of of seconds the bot will wait to reconnect when the connection is lost, where as failedDelay is the number of seconds until the bot tries to reconnect when the connection failed. lostDelay defaults to a random number between 1 and 5, while failedDelay defaults to a random one between 45 and 60. Setting random defaults like this means multiple IRC bots are less likely to deny each other by flooding the server.


class buildbot.status.client.PBListener
import buildbot.status.client
pbl = buildbot.status.client.PBListener(port=int, user=str,

This sets up a PB listener on the given TCP port, to which a PB-based status client can connect and retrieve status information. buildbot statusgui (statusgui) is an example of such a status client. The port argument can also be a strports specification string.


class buildbot.status.status_push.StatusPush
def Process(self):
  print str(self.queue.popChunk())

import buildbot.status.status_push
sp = buildbot.status.status_push.StatusPush(serverPushCb=Process,

StatusPush batches events normally processed and sends it to the serverPushCb callback every bufferDelay seconds. The callback should pop items from the queue and then queue the next callback. If no items were poped from self.queue, retryDelay seconds will be waited instead.


import buildbot.status.status_push
sp = buildbot.status.status_push.HttpStatusPush(

HttpStatusPush builds on StatusPush and sends HTTP requests to serverUrl, with all the items json-encoded. It is useful to create a status front end outside of buildbot for better scalability.


class buildbot.status.status_gerrit.GerritStatusPush
from buildbot.status.status_gerrit import GerritStatusPush

def gerritReviewCB(builderName, build, result, arg):
    message =  "Buildbot finished compiling your patchset\n"
    message += "on configuration: %s\n" % builderName
    message += "The result is: %s\n" % Results[result].upper()

    if arg:
        message += "\nFor more details visit:\n"
        message += "%sbuilders/%s/builds/%d\n" % (arg, builderName, build.getNumber())

    # message, verified, reviewed
    return message, (result == 0 or -1), 0

c['buildbotURL'] = ''
c['status'].append(GerritStatusPush('', 'buildbot',

GerritStatusPush sends review of the Change back to the Gerrit server.

[1]Apparently this is the same way displays build status
[2]It may even be possible to provide SSL access by using a specification like "ssl:12345:privateKey=mykey.pen:certKey=cert.pem", but this is completely untested