コード例 #1
0
ファイル: __init__.py プロジェクト: JuliaLang/JuliaBox
def is_cluster_leader():
    self_id = Compute.get_instance_id()
    cluster = Compute.get_install_id()
    instances = Compute.get_all_instances()
    leader = JBoxDynConfig.get_cluster_leader(cluster)
    img_recentness = Compute.get_image_recentness()
    JBoxDB.log_debug("cluster: %s. instances: %s. leader: %s. image recentness: %d",
                     cluster, repr(instances), repr(leader), img_recentness)

    # if none set, or set instance is dead elect self as leader, but wait till next cycle to prevent conflicts
    if (leader is None) or (leader not in instances) and (img_recentness >= 0):
        JBoxDB.log_info("setting self (%s) as cluster leader", self_id)
        try:
            JBoxDynConfig.set_cluster_leader(cluster, self_id)
        except:
            JBoxDB.log_info("error setting self (%s) as cluster leader, will retry", self_id)
        return False

    is_leader = (leader == self_id)

    # if running an older ami, step down from cluster leader
    if (img_recentness < 0) and is_leader:
        JBoxDB.log_info("unmarking self (%s) as cluster leader", self_id)
        JBoxDynConfig.unset_cluster_leader(cluster)
        return False

    return is_leader
コード例 #2
0
def is_cluster_leader():
    self_id = Compute.get_instance_id()
    cluster = Compute.get_install_id()
    instances = Compute.get_all_instances()
    leader = JBoxDynConfig.get_cluster_leader(cluster)
    img_recentness = Compute.get_image_recentness()
    JBoxDB.log_debug(
        "cluster: %s. instances: %s. leader: %s. image recentness: %d",
        cluster, repr(instances), repr(leader), img_recentness)

    # if none set, or set instance is dead elect self as leader, but wait till next cycle to prevent conflicts
    if (leader is None) or (leader not in instances) and (img_recentness >= 0):
        JBoxDB.log_info("setting self (%s) as cluster leader", self_id)
        try:
            JBoxDynConfig.set_cluster_leader(cluster, self_id)
        except:
            JBoxDB.log_info(
                "error setting self (%s) as cluster leader, will retry",
                self_id)
        return False

    is_leader = (leader == self_id)

    # if running an older ami, step down from cluster leader
    if (img_recentness < 0) and is_leader:
        JBoxDB.log_info("unmarking self (%s) as cluster leader", self_id)
        JBoxDynConfig.unset_cluster_leader(cluster)
        return False

    return is_leader
コード例 #3
0
ファイル: __init__.py プロジェクト: JuliaLang/JuliaBox
def publish_stats():
    JBoxUserV2.calc_stats()
    JBoxDynConfig.set_stat(Compute.get_install_id(), JBoxUserV2.STAT_NAME, JBoxUserV2.STATS)
コード例 #4
0
ファイル: __init__.py プロジェクト: JuliaLang/JuliaBox
def is_proposed_cluster_leader():
    cluster = Compute.get_install_id()
    leader = JBoxDynConfig.get_cluster_leader(cluster)
    return leader == Compute.get_instance_id()
コード例 #5
0
def publish_stats():
    JBoxUserV2.calc_stats()
    JBoxDynConfig.set_stat(Compute.get_install_id(), JBoxUserV2.STAT_NAME,
                           JBoxUserV2.STATS)
コード例 #6
0
def is_proposed_cluster_leader():
    cluster = Compute.get_install_id()
    leader = JBoxDynConfig.get_cluster_leader(cluster)
    return leader == Compute.get_instance_id()