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Python Open Source » Build » Buildbot 
Buildbot » buildbot 0.8.0 » buildbot » status » web » waterfall.py
# -*- test-case-name: buildbot.test.test_web -*-

from zope.interface import implements
from twisted.python import log,components
import urllib

import time, locale
import operator

from buildbot import interfaces,util
from buildbot.status import builder

from buildbot.status.web.base import Box,HtmlResource,IBox,ICurrentBox,\
     ITopBox, build_get_class, path_to_build, path_to_step, path_to_root, \
     map_branches


def earlier(old, new):
    # minimum of two things, but "None" counts as +infinity
    if old:
        if new < old:
            return new
        return old
    return new

def later(old, new):
    # maximum of two things, but "None" counts as -infinity
    if old:
        if new > old:
            return new
        return old
    return new


class CurrentBox(components.Adapter):
    # this provides the "current activity" box, just above the builder name
    implements(ICurrentBox)

    def formatETA(self, prefix, eta):
        if eta is None:
            return []
        if eta < 60:
            return ["< 1 min"]
        eta_parts = ["~"]
        eta_secs = eta
        if eta_secs > 3600:
            eta_parts.append("%d hrs" % (eta_secs / 3600))
            eta_secs %= 3600
        if eta_secs > 60:
            eta_parts.append("%d mins" % (eta_secs / 60))
            eta_secs %= 60
        abstime = time.strftime("%H:%M", time.localtime(util.now()+eta))
        return [prefix, " ".join(eta_parts), "at %s" % abstime]

    def getBox(self, status):
        # getState() returns offline, idle, or building
        state, builds = self.original.getState()

        # look for upcoming builds. We say the state is "waiting" if the
        # builder is otherwise idle and there is a scheduler which tells us a
        # build will be performed some time in the near future. TODO: this
        # functionality used to be in BuilderStatus.. maybe this code should
        # be merged back into it.
        upcoming = []
        builderName = self.original.getName()
        for s in status.getSchedulers():
            if builderName in s.listBuilderNames():
                upcoming.extend(s.getPendingBuildTimes())
        if state == "idle" and upcoming:
            state = "waiting"

        if state == "building":
            text = ["building"]
            if builds:
                for b in builds:
                    eta = b.getETA()
                    text.extend(self.formatETA("ETA in", eta))
        elif state == "offline":
            text = ["offline"]
        elif state == "idle":
            text = ["idle"]
        elif state == "waiting":
            text = ["waiting"]
        else:
            # just in case I add a state and forget to update this
            text = [state]

        # TODO: for now, this pending/upcoming stuff is in the "current
        # activity" box, but really it should go into a "next activity" row
        # instead. The only times it should show up in "current activity" is
        # when the builder is otherwise idle.

        # are any builds pending? (waiting for a slave to be free)
        pbs = self.original.getPendingBuilds()
        if pbs:
            text.append("%d pending" % len(pbs))
        for t in upcoming:
            eta = t - util.now()
            text.extend(self.formatETA("next in", eta))
        return Box(text, class_="Activity " + state)

components.registerAdapter(CurrentBox, builder.BuilderStatus, ICurrentBox)


class BuildTopBox(components.Adapter):
    # this provides a per-builder box at the very top of the display,
    # showing the results of the most recent build
    implements(IBox)

    def getBox(self, req):
        assert interfaces.IBuilderStatus(self.original)
        branches = [b for b in req.args.get("branch", []) if b]
        builder = self.original
        builds = list(builder.generateFinishedBuilds(map_branches(branches),
                                                     num_builds=1))
        if not builds:
            return Box(["none"], class_="LastBuild")
        b = builds[0]
        text = b.getText()
        tests_failed = b.getSummaryStatistic('tests-failed', operator.add, 0)
        if tests_failed: text.extend(["Failed tests: %d" % tests_failed])
        # TODO: maybe add logs?
        # TODO: add link to the per-build page at 'url'
        class_ = build_get_class(b)
        return Box(text, class_="LastBuild %s" % class_)
components.registerAdapter(BuildTopBox, builder.BuilderStatus, ITopBox)

class BuildBox(components.Adapter):
    # this provides the yellow "starting line" box for each build
    implements(IBox)

    def getBox(self, req):
        b = self.original
        number = b.getNumber()
        url = path_to_build(req, b)
        reason = b.getReason()
        template = req.site.buildbot_service.templates.get_template("box_macros.html")
        text = template.module.build_box(reason=reason,url=url,number=number)
        class_ = "start"
        if b.isFinished() and not b.getSteps():
            # the steps have been pruned, so there won't be any indication
            # of whether it succeeded or failed.
            class_ = build_get_class(b)
        return Box([text], class_="BuildStep " + class_)
components.registerAdapter(BuildBox, builder.BuildStatus, IBox)

class StepBox(components.Adapter):
    implements(IBox)

    def getBox(self, req):
        urlbase = path_to_step(req, self.original)
        text = self.original.getText()
        if text is None:
            log.msg("getText() gave None", urlbase)
            text = []
        text = text[:]
        logs = self.original.getLogs()
        
        cxt = dict(text=text, logs=[], urls=[])

        for num in range(len(logs)):
            name = logs[num].getName()
            if logs[num].hasContents():
                url = urlbase + "/logs/%s" % urllib.quote(name)
            else:
                url = None
            cxt['logs'].append(dict(name=name, url=url))

        for name, target in self.original.getURLs().items():
            cxt['urls'].append(dict(link=target,name=name))

        template = req.site.buildbot_service.templates.get_template("box_macros.html")
        text = template.module.step_box(**cxt)
        
        class_ = "BuildStep " + build_get_class(self.original)
        return Box(text, class_=class_)
components.registerAdapter(StepBox, builder.BuildStepStatus, IBox)


class EventBox(components.Adapter):
    implements(IBox)

    def getBox(self, req):
        text = self.original.getText()
        class_ = "Event"
        return Box(text, class_=class_)
components.registerAdapter(EventBox, builder.Event, IBox)
        

class Spacer:
    implements(interfaces.IStatusEvent)

    def __init__(self, start, finish):
        self.started = start
        self.finished = finish

    def getTimes(self):
        return (self.started, self.finished)
    def getText(self):
        return []

class SpacerBox(components.Adapter):
    implements(IBox)

    def getBox(self, req):
        #b = Box(["spacer"], "white")
        b = Box([])
        b.spacer = True
        return b
components.registerAdapter(SpacerBox, Spacer, IBox)

def insertGaps(g, showEvents, lastEventTime, idleGap=2):
    debug = False

    e = g.next()
    starts, finishes = e.getTimes()
    if debug: log.msg("E0", starts, finishes)
    if finishes == 0:
        finishes = starts
    if debug: log.msg("E1 finishes=%s, gap=%s, lET=%s" % \
                      (finishes, idleGap, lastEventTime))
    if finishes is not None and finishes + idleGap < lastEventTime:
        if debug: log.msg(" spacer0")
        yield Spacer(finishes, lastEventTime)

    followingEventStarts = starts
    if debug: log.msg(" fES0", starts)
    yield e

    while 1:
        e = g.next()
        if not showEvents and isinstance(e, builder.Event):
            continue
        starts, finishes = e.getTimes()
        if debug: log.msg("E2", starts, finishes)
        if finishes == 0:
            finishes = starts
        if finishes is not None and finishes + idleGap < followingEventStarts:
            # there is a gap between the end of this event and the beginning
            # of the next one. Insert an idle event so the waterfall display
            # shows a gap here.
            if debug:
                log.msg(" finishes=%s, gap=%s, fES=%s" % \
                        (finishes, idleGap, followingEventStarts))
            yield Spacer(finishes, followingEventStarts)
        yield e
        followingEventStarts = starts
        if debug: log.msg(" fES1", starts)


class WaterfallHelp(HtmlResource):
    title = "Waterfall Help"

    def __init__(self, categories=None):
        HtmlResource.__init__(self)
        self.categories = categories

    def content(self, request, cxt):
        status = self.getStatus(request)

        cxt['show_events_checked'] = request.args.get("show_events", ["false"])[0].lower() == "true"
        cxt['branches'] = [b for b in request.args.get("branch", []) if b]
        cxt['failures_only'] = request.args.get("failures_only", ["false"])[0].lower() == "true"
        cxt['committers'] = [c for c in request.args.get("committer", []) if c]

        # this has a set of toggle-buttons to let the user choose the
        # builders
        show_builders = request.args.get("show", [])
        show_builders.extend(request.args.get("builder", []))
        cxt['show_builders'] = show_builders
        cxt['all_builders'] = status.getBuilderNames(categories=self.categories)

        # a couple of radio-button selectors for refresh time will appear
        # just after that text
        times = [("none", "None"),
                 ("60", "60 seconds"),
                 ("300", "5 minutes"),
                 ("600", "10 minutes"),
                 ]
        current_reload_time = request.args.get("reload", ["none"])
        if current_reload_time:
            current_reload_time = current_reload_time[0]
        if current_reload_time not in [t[0] for t in times]:
            times.insert(0, (current_reload_time, current_reload_time) )

        cxt['times'] = times
        cxt['current_reload_time'] = current_reload_time   

        template = request.site.buildbot_service.templates.get_template("waterfallhelp.html")
        return template.render(**cxt)


class WaterfallStatusResource(HtmlResource):
    """This builds the main status page, with the waterfall display, and
    all child pages."""

    def __init__(self, categories=None, num_events=200, num_events_max=None):
        HtmlResource.__init__(self)
        self.categories = categories
        self.num_events=num_events
        self.num_events_max=num_events_max
        self.putChild("help", WaterfallHelp(categories))

    def getTitle(self, request):
        status = self.getStatus(request)
        p = status.getProjectName()
        if p:
            return "BuildBot: %s" % p
        else:
            return "BuildBot"

    def getChangeManager(self, request):
        # TODO: this wants to go away, access it through IStatus
        return request.site.buildbot_service.getChangeSvc()

    def get_reload_time(self, request):
        if "reload" in request.args:
            try:
                reload_time = int(request.args["reload"][0])
                return max(reload_time, 15)
            except ValueError:
                pass
        return None

    def isSuccess(self, builderStatus):
        # Helper function to return True if the builder is not failing.
        # The function will return false if the current state is "offline",
        # the last build was not successful, or if a step from the current
        # build(s) failed.

        # Make sure the builder is online.
        if builderStatus.getState()[0] == 'offline':
            return False

        # Look at the last finished build to see if it was success or not.
        lastBuild = builderStatus.getLastFinishedBuild()
        if lastBuild and lastBuild.getResults() != builder.SUCCESS:
            return False

        # Check all the current builds to see if one step is already
        # failing.
        currentBuilds = builderStatus.getCurrentBuilds()
        if currentBuilds:
            for build in currentBuilds:
                for step in build.getSteps():
                    if step.getResults()[0] == builder.FAILURE:
                        return False

        # The last finished build was successful, and all the current builds
        # don't have any failed steps.
        return True

    def content(self, request, ctx):
        status = self.getStatus(request)
        ctx['refresh'] = self.get_reload_time(request)

        # we start with all Builders available to this Waterfall: this is
        # limited by the config-file -time categories= argument, and defaults
        # to all defined Builders.
        allBuilderNames = status.getBuilderNames(categories=self.categories)
        builders = [status.getBuilder(name) for name in allBuilderNames]

        # but if the URL has one or more builder= arguments (or the old show=
        # argument, which is still accepted for backwards compatibility), we
        # use that set of builders instead. We still don't show anything
        # outside the config-file time set limited by categories=.
        showBuilders = request.args.get("show", [])
        showBuilders.extend(request.args.get("builder", []))
        if showBuilders:
            builders = [b for b in builders if b.name in showBuilders]

        # now, if the URL has one or category= arguments, use them as a
        # filter: only show those builders which belong to one of the given
        # categories.
        showCategories = request.args.get("category", [])
        if showCategories:
            builders = [b for b in builders if b.category in showCategories]

        # If the URL has the failures_only=true argument, we remove all the
        # builders that are not currently red or won't be turning red at the end
        # of their current run.
        failuresOnly = request.args.get("failures_only", ["false"])[0]
        if failuresOnly.lower() == "true":
            builders = [b for b in builders if not self.isSuccess(b)]
        
        (changeNames, builderNames, timestamps, eventGrid, sourceEvents) = \
                      self.buildGrid(request, builders)            
            
        # start the table: top-header material
        locale_enc = locale.getdefaultlocale()[1]
        if locale_enc is not None:
            locale_tz = unicode(time.tzname[time.localtime()[-1]], locale_enc)
        else:
            locale_tz = unicode(time.tzname[time.localtime()[-1]])
        ctx['tz'] = locale_tz
        ctx['changes_url'] = request.childLink("../changes")
        
        bn = ctx['builders'] = []
                
        for name in builderNames:
            builder = status.getBuilder(name)
            top_box = ITopBox(builder).getBox(request)
            current_box = ICurrentBox(builder).getBox(status)
            bn.append({'name': name,
                       'url': request.childLink("../builders/%s" % urllib.quote(name, safe='')), 
                       'top': top_box.text, 
                       'top_class': top_box.class_,
                       'status': current_box.text,
                       'status_class': current_box.class_,                       
                        })

        ctx.update(self.phase2(request, changeNames + builderNames, timestamps, eventGrid,
                  sourceEvents))

        def with_args(req, remove_args=[], new_args=[], new_path=None):
            # sigh, nevow makes this sort of manipulation easier
            newargs = req.args.copy()
            for argname in remove_args:
                newargs[argname] = []
            if "branch" in newargs:
                newargs["branch"] = [b for b in newargs["branch"] if b]
            for k,v in new_args:
                if k in newargs:
                    newargs[k].append(v)
                else:
                    newargs[k] = [v]
            newquery = "&amp;".join(["%s=%s" % (urllib.quote(k), urllib.quote(v))
                                 for k in newargs
                                 for v in newargs[k]
                                 ])
            if new_path:
                new_url = new_path
            elif req.prepath:
                new_url = req.prepath[-1]
            else:
                new_url = ''
            if newquery:
                new_url += "?" + newquery
            return new_url

        if timestamps:
            bottom = timestamps[-1]
            ctx['nextpage'] = with_args(request, ["last_time"],
                                 [("last_time", str(int(bottom)))])


        helpurl = path_to_root(request) + "waterfall/help"
        ctx['help_url'] = with_args(request, new_path=helpurl)

        if self.get_reload_time(request) is not None:
            ctx['no_reload_page'] = with_args(request, remove_args=["reload"])

        template = request.site.buildbot_service.templates.get_template("waterfall.html")
        data = template.render(**ctx)
        return data
    
    def buildGrid(self, request, builders):
        debug = False
        # TODO: see if we can use a cached copy

        showEvents = False
        if request.args.get("show_events", ["false"])[0].lower() == "true":
            showEvents = True
        filterCategories = request.args.get('category', [])
        filterBranches = [b for b in request.args.get("branch", []) if b]
        filterBranches = map_branches(filterBranches)
        filterCommitters = [c for c in request.args.get("committer", []) if c]
        maxTime = int(request.args.get("last_time", [util.now()])[0])
        if "show_time" in request.args:
            minTime = maxTime - int(request.args["show_time"][0])
        elif "first_time" in request.args:
            minTime = int(request.args["first_time"][0])
        elif filterBranches or filterCommitters:
            minTime = util.now() - 24 * 60 * 60
        else:
            minTime = 0
        spanLength = 10  # ten-second chunks
        req_events=int(request.args.get("num_events", [self.num_events])[0])
        if self.num_events_max and req_events > self.num_events_max:
            maxPageLen = self.num_events_max
        else:
            maxPageLen = req_events

        # first step is to walk backwards in time, asking each column
        # (commit, all builders) if they have any events there. Build up the
        # array of events, and stop when we have a reasonable number.

        commit_source = self.getChangeManager(request)

        lastEventTime = util.now()
        sources = [commit_source] + builders
        changeNames = ["changes"]
        builderNames = map(lambda builder: builder.getName(), builders)
        sourceNames = changeNames + builderNames
        sourceEvents = []
        sourceGenerators = []

        def get_event_from(g):
            try:
                while True:
                    e = g.next()
                    # e might be builder.BuildStepStatus,
                    # builder.BuildStatus, builder.Event,
                    # waterfall.Spacer(builder.Event), or changes.Change .
                    # The showEvents=False flag means we should hide
                    # builder.Event .
                    if not showEvents and isinstance(e, builder.Event):
                        continue
                    break
                event = interfaces.IStatusEvent(e)
                if debug:
                    log.msg("gen %s gave1 %s" % (g, event.getText()))
            except StopIteration:
                event = None
            return event

        for s in sources:
            gen = insertGaps(s.eventGenerator(filterBranches,
                                              filterCategories,
                                              filterCommitters,
                                              minTime),
                             showEvents,
                             lastEventTime)
            sourceGenerators.append(gen)
            # get the first event
            sourceEvents.append(get_event_from(gen))
        eventGrid = []
        timestamps = []

        lastEventTime = 0
        for e in sourceEvents:
            if e and e.getTimes()[0] > lastEventTime:
                lastEventTime = e.getTimes()[0]
        if lastEventTime == 0:
            lastEventTime = util.now()

        spanStart = lastEventTime - spanLength
        debugGather = 0

        while 1:
            if debugGather: log.msg("checking (%s,]" % spanStart)
            # the tableau of potential events is in sourceEvents[]. The
            # window crawls backwards, and we examine one source at a time.
            # If the source's top-most event is in the window, is it pushed
            # onto the events[] array and the tableau is refilled. This
            # continues until the tableau event is not in the window (or is
            # missing).

            spanEvents = [] # for all sources, in this span. row of eventGrid
            firstTimestamp = None # timestamp of first event in the span
            lastTimestamp = None # last pre-span event, for next span

            for c in range(len(sourceGenerators)):
                events = [] # for this source, in this span. cell of eventGrid
                event = sourceEvents[c]
                while event and spanStart < event.getTimes()[0]:
                    # to look at windows that don't end with the present,
                    # condition the .append on event.time <= spanFinish
                    if not IBox(event, None):
                        log.msg("BAD EVENT", event, event.getText())
                        assert 0
                    if debug:
                        log.msg("pushing", event.getText(), event)
                    events.append(event)
                    starts, finishes = event.getTimes()
                    firstTimestamp = earlier(firstTimestamp, starts)
                    event = get_event_from(sourceGenerators[c])
                if debug:
                    log.msg("finished span")

                if event:
                    # this is the last pre-span event for this source
                    lastTimestamp = later(lastTimestamp,
                                               event.getTimes()[0])
                if debugGather:
                    log.msg(" got %s from %s" % (events, sourceNames[c]))
                sourceEvents[c] = event # refill the tableau
                spanEvents.append(events)

            # only show events older than maxTime. This makes it possible to
            # visit a page that shows what it would be like to scroll off the
            # bottom of this one.
            if firstTimestamp is not None and firstTimestamp <= maxTime:
                eventGrid.append(spanEvents)
                timestamps.append(firstTimestamp)

            if lastTimestamp:
                spanStart = lastTimestamp - spanLength
            else:
                # no more events
                break
            if minTime is not None and lastTimestamp < minTime:
                break

            if len(timestamps) > maxPageLen:
                break
            
            
            # now loop
            
        # loop is finished. now we have eventGrid[] and timestamps[]
        if debugGather: log.msg("finished loop")
        assert(len(timestamps) == len(eventGrid))
        return (changeNames, builderNames, timestamps, eventGrid, sourceEvents)
    
    def phase2(self, request, sourceNames, timestamps, eventGrid,
               sourceEvents):

        if not timestamps:
            return dict(grid=[], gridlen=0)
        
        # first pass: figure out the height of the chunks, populate grid
        grid = []
        for i in range(1+len(sourceNames)):
            grid.append([])
        # grid is a list of columns, one for the timestamps, and one per
        # event source. Each column is exactly the same height. Each element
        # of the list is a single <td> box.
        lastDate = time.strftime("%d %b %Y",
                                 time.localtime(util.now()))
        for r in range(0, len(timestamps)):
            chunkstrip = eventGrid[r]
            # chunkstrip is a horizontal strip of event blocks. Each block
            # is a vertical list of events, all for the same source.
            assert(len(chunkstrip) == len(sourceNames))
            maxRows = reduce(lambda x,y: max(x,y),
                             map(lambda x: len(x), chunkstrip))
            for i in range(maxRows):
                if i != maxRows-1:
                    grid[0].append(None)
                else:
                    # timestamp goes at the bottom of the chunk
                    stuff = []
                    # add the date at the beginning (if it is not the same as
                    # today's date), and each time it changes
                    todayday = time.strftime("%a",
                                             time.localtime(timestamps[r]))
                    today = time.strftime("%d %b %Y",
                                          time.localtime(timestamps[r]))
                    if today != lastDate:
                        stuff.append(todayday)
                        stuff.append(today)
                        lastDate = today
                    stuff.append(
                        time.strftime("%H:%M:%S",
                                      time.localtime(timestamps[r])))
                    grid[0].append(Box(text=stuff, class_="Time",
                                       valign="bottom", align="center"))

            # at this point the timestamp column has been populated with
            # maxRows boxes, most None but the last one has the time string
            for c in range(0, len(chunkstrip)):
                block = chunkstrip[c]
                assert(block != None) # should be [] instead
                for i in range(maxRows - len(block)):
                    # fill top of chunk with blank space
                    grid[c+1].append(None)
                for i in range(len(block)):
                    # so the events are bottom-justified
                    b = IBox(block[i]).getBox(request)
                    b.parms['valign'] = "top"
                    b.parms['align'] = "center"
                    grid[c+1].append(b)
            # now all the other columns have maxRows new boxes too
        # populate the last row, if empty
        gridlen = len(grid[0])
        for i in range(len(grid)):
            strip = grid[i]
            assert(len(strip) == gridlen)
            if strip[-1] == None:
                if sourceEvents[i-1]:
                    filler = IBox(sourceEvents[i-1]).getBox(request)
                else:
                    # this can happen if you delete part of the build history
                    filler = Box(text=["?"], align="center")
                strip[-1] = filler
            strip[-1].parms['rowspan'] = 1
        # second pass: bubble the events upwards to un-occupied locations
        # Every square of the grid that has a None in it needs to have
        # something else take its place.
        noBubble = request.args.get("nobubble",['0'])
        noBubble = int(noBubble[0])
        if not noBubble:
            for col in range(len(grid)):
                strip = grid[col]
                if col == 1: # changes are handled differently
                    for i in range(2, len(strip)+1):
                        # only merge empty boxes. Don't bubble commit boxes.
                        if strip[-i] == None:
                            next = strip[-i+1]
                            assert(next)
                            if next:
                                #if not next.event:
                                if next.spacer:
                                    # bubble the empty box up
                                    strip[-i] = next
                                    strip[-i].parms['rowspan'] += 1
                                    strip[-i+1] = None
                                else:
                                    # we are above a commit box. Leave it
                                    # be, and turn the current box into an
                                    # empty one
                                    strip[-i] = Box([], rowspan=1,
                                                    comment="commit bubble")
                                    strip[-i].spacer = True
                            else:
                                # we are above another empty box, which
                                # somehow wasn't already converted.
                                # Shouldn't happen
                                pass
                else:
                    for i in range(2, len(strip)+1):
                        # strip[-i] will go from next-to-last back to first
                        if strip[-i] == None:
                            # bubble previous item up
                            assert(strip[-i+1] != None)
                            strip[-i] = strip[-i+1]
                            strip[-i].parms['rowspan'] += 1
                            strip[-i+1] = None
                        else:
                            strip[-i].parms['rowspan'] = 1

        # convert to dicts
        for i in range(gridlen):
            for strip in grid:
                if strip[i]:
                    strip[i] = strip[i].td()

        return dict(grid=grid, gridlen=gridlen, no_bubble=noBubble, time=lastDate)

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