Python lru.LRUCache类代码示例

 def __setstate__(self, d):
     # when loading, re-initialize the transient stuff. Remember that
     # upgradeToVersion1 and such will be called after this finishes.
     styles.Versioned.__setstate__(self, d)
     self.buildCache = LRUCache(self.cacheMiss)
     self.currentBuilds = []
     self.watchers = []
     self.slavenames = []

    def __init__(self, buildername, tags, master, description):
        self.name = buildername
        self.tags = tags
        self.description = description
        self.master = master

        self.slavenames = []
        self.events = []
        # these three hold Events, and are used to retrieve the current
        # state of the boxes.
        self.lastBuildStatus = None
        self.currentBuilds = []
        self.nextBuild = None
        self.watchers = []
        self.buildCache = LRUCache(self.cacheMiss)

    def __init__(self, buildername, category, master):
        self.name = buildername
        self.category = category
        self.master = master

        self.slavenames = []
        self.events = []
        # these three hold Events, and are used to retrieve the current
        # state of the boxes.
        self.lastBuildStatus = None
        #self.currentBig = None
        #self.currentSmall = None
        self.currentBuilds = []
        self.nextBuild = None
        self.watchers = []
        self.buildCache = LRUCache(self.cacheMiss)

class BuilderStatus(styles.Versioned):

    """I handle status information for a single process.build.Builder object.
    That object sends status changes to me (frequently as Events), and I
    provide them on demand to the various status recipients, like the HTML
    waterfall display and the live status clients. It also sends build
    summaries to me, which I log and provide to status clients who aren't
    interested in seeing details of the individual build steps.

    I am responsible for maintaining the list of historic Events and Builds,
    pruning old ones, and loading them from / saving them to disk.

    I live in the buildbot.process.build.Builder object, in the
    .builder_status attribute.

    @type  tags: None or list of strings
    @ivar  tags: user-defined "tag" this builder has; can be
                     used to filter on in status clients
    """

    implements(interfaces.IBuilderStatus, interfaces.IEventSource)

    persistenceVersion = 2
    persistenceForgets = ('wasUpgraded', )

    tags = None
    currentBigState = "offline"  # or idle/waiting/interlocked/building
    basedir = None  # filled in by our parent

    def __init__(self, buildername, tags, master, description):
        self.name = buildername
        self.tags = tags
        self.description = description
        self.master = master

        self.slavenames = []
        self.events = []
        # these three hold Events, and are used to retrieve the current
        # state of the boxes.
        self.lastBuildStatus = None
        self.currentBuilds = []
        self.nextBuild = None
        self.watchers = []
        self.buildCache = LRUCache(self.cacheMiss)

    # persistence

    def __getstate__(self):
        # when saving, don't record transient stuff like what builds are
        # currently running, because they won't be there when we start back
        # up. Nor do we save self.watchers, nor anything that gets set by our
        # parent like .basedir and .status
        d = styles.Versioned.__getstate__(self)
        d['watchers'] = []
        del d['buildCache']
        for b in self.currentBuilds:
            b.saveYourself()
            # TODO: push a 'hey, build was interrupted' event
        del d['currentBuilds']
        d.pop('pendingBuilds', None)
        del d['currentBigState']
        del d['basedir']
        del d['status']
        del d['nextBuildNumber']
        del d['master']
        return d

    def __setstate__(self, d):
        # when loading, re-initialize the transient stuff. Remember that
        # upgradeToVersion1 and such will be called after this finishes.
        styles.Versioned.__setstate__(self, d)
        self.buildCache = LRUCache(self.cacheMiss)
        self.currentBuilds = []
        self.watchers = []
        self.slavenames = []
        # self.basedir must be filled in by our parent
        # self.status must be filled in by our parent
        # self.master must be filled in by our parent

    def upgradeToVersion1(self):
        if hasattr(self, 'slavename'):
            self.slavenames = [self.slavename]
            del self.slavename
        if hasattr(self, 'nextBuildNumber'):
            del self.nextBuildNumber  # determineNextBuildNumber chooses this
        self.wasUpgraded = True

    def upgradeToVersion2(self):
        if hasattr(self, 'category'):
            self.tags = self.category and [self.category] or None
            del self.category
        self.wasUpgraded = True

    def determineNextBuildNumber(self):
        """Scan our directory of saved BuildStatus instances to determine
        what our self.nextBuildNumber should be. Set it one larger than the
        highest-numbered build we discover. This is called by the top-level
        Status object shortly after we are created or loaded from disk.
        """
        existing_builds = [int(f)
#.........这里部分代码省略.........

class BuilderStatus(styles.Versioned):

    """I handle status information for a single process.build.Builder object.
    That object sends status changes to me (frequently as Events), and I
    provide them on demand to the various status recipients, like the HTML
    waterfall display and the live status clients. It also sends build
    summaries to me, which I log and provide to status clients who aren't
    interested in seeing details of the individual build steps.

    I am responsible for maintaining the list of historic Events and Builds,
    pruning old ones, and loading them from / saving them to disk.

    I live in the buildbot.process.build.Builder object, in the
    .builder_status attribute.

    @type  tags: None or list of strings
    @ivar  tags: user-defined "tag" this builder has; can be
                     used to filter on in status clients
    """

    implements(interfaces.IBuilderStatus, interfaces.IEventSource)

    persistenceVersion = 2
    persistenceForgets = ('wasUpgraded', )

    tags = None
    currentBigState = "offline"  # or idle/waiting/interlocked/building
    basedir = None  # filled in by our parent

    def __init__(self, buildername, tags, master, description):
        self.name = buildername
        self.tags = tags
        self.description = description
        self.master = master

        self.workernames = []
        self.events = []
        # these three hold Events, and are used to retrieve the current
        # state of the boxes.
        self.lastBuildStatus = None
        self.currentBuilds = []
        self.nextBuild = None
        self.watchers = []
        self.buildCache = LRUCache(self.cacheMiss)

    # build cache management
    def setCacheSize(self, size):
        self.buildCache.set_max_size(size)

    def getBuildByNumber(self, number):
        return self.buildCache.get(number)

    def cacheMiss(self, number, **kwargs):
        # If kwargs['val'] exists, this is a new value being added to
        # the cache.  Just return it.
        if 'val' in kwargs:
            return kwargs['val']

        # first look in currentBuilds
        for b in self.currentBuilds:
            if b.number == number:
                return b

        # Otherwise it is in the database and thus inaccesible.
        return None

    def prune(self, events_only=False):
        pass

    # IBuilderStatus methods
    def getName(self):
        # if builderstatus page does show not up without any reason then
        # str(self.name) may be a workaround
        return self.name

    def setDescription(self, description):
        # used during reconfig
        self.description = description

    def getDescription(self):
        return self.description

    def getState(self):
        return (self.currentBigState, self.currentBuilds)

    def getWorkers(self):
        return [self.status.getWorker(name) for name in self.workernames]

    def getPendingBuildRequestStatuses(self):
        # just assert 0 here. According to dustin the whole class will go away
        # soon.
        assert 0
        db = self.status.master.db
        d = db.buildrequests.getBuildRequests(claimed=False,
                                              buildername=self.name)

        @d.addCallback
        def make_statuses(brdicts):
            return [BuildRequestStatus(self.name, brdict['brid'],
                                       self.status, brdict=brdict)
#.........这里部分代码省略.........