Python service.SpawnedService类代码示例

    def open(self):
        self.tmp_dir = tempfile.mkdtemp()
        self.out("Running local instance...")
        log.info("  host    = %s", self.host)
        log.info("  port    = %s", self.port)
        log.info("  tmp_dir = %s", self.tmp_dir)

        # Generate configs
        template = self.test_resource("zookeeper.properties")
        properties = os.path.join(self.tmp_dir, "zookeeper.properties")
        self.render_template(template, properties, vars(self))

        # Configure Zookeeper child process
        args = self.kafka_run_class_args("org.apache.zookeeper.server.quorum.QuorumPeerMain", properties)
        env = self.kafka_run_class_env()

        # Party!
        self.out("Starting...")
        timeout = 5
        max_timeout = 30
        backoff = 1
        while True:
            self.child = SpawnedService(args, env)
            self.child.start()
            timeout = min(timeout, max_timeout)
            if self.child.wait_for(r"binding to port", timeout=timeout):
                break
            self.child.stop()
            timeout *= 2
            time.sleep(backoff)
        self.out("Done!")

    def open(self):
        if self.running:
            self.out("Instance already running")
            return

        self.tmp_dir = tempfile.mkdtemp()
        self.out("Running local instance...")
        log.info("  host       = %s", self.host)
        log.info("  port       = %s", self.port)
        log.info("  broker_id  = %s", self.broker_id)
        log.info("  zk_host    = %s", self.zk_host)
        log.info("  zk_port    = %s", self.zk_port)
        log.info("  zk_chroot  = %s", self.zk_chroot)
        log.info("  replicas   = %s", self.replicas)
        log.info("  partitions = %s", self.partitions)
        log.info("  tmp_dir    = %s", self.tmp_dir)

        # Create directories
        os.mkdir(os.path.join(self.tmp_dir, "logs"))
        os.mkdir(os.path.join(self.tmp_dir, "data"))

        # Generate configs
        template = self.test_resource("kafka.properties")
        properties = os.path.join(self.tmp_dir, "kafka.properties")
        self.render_template(template, properties, vars(self))

        # Party!
        self.out("Creating Zookeeper chroot node...")
        args = self.kafka_run_class_args("org.apache.zookeeper.ZooKeeperMain",
                                         "-server", "%s:%d" % (self.zk_host, self.zk_port),
                                         "create",
                                         "/%s" % self.zk_chroot,
                                         "kafka-python")
        env = self.kafka_run_class_env()
        proc = subprocess.Popen(args, env=env, stdout=subprocess.PIPE, stderr=subprocess.PIPE)

        if proc.wait() != 0:
            self.out("Failed to create Zookeeper chroot node")
            self.out(proc.stdout.read())
            self.out(proc.stderr.read())
            raise RuntimeError("Failed to create Zookeeper chroot node")
        self.out("Done!")

        self.out("Starting...")

        # Configure Kafka child process
        args = self.kafka_run_class_args("kafka.Kafka", properties)
        env = self.kafka_run_class_env()

        while True:
            self.child = SpawnedService(args, env)
            self.child.start()
            if self.child.wait_for(r"\[Kafka Server %d\], Started" % self.broker_id, timeout=5):
                break
            self.child.stop()
        self.out("Done!")
        self.running = True

class ZookeeperFixture(Fixture):
    @classmethod
    def instance(cls):
        if "ZOOKEEPER_URI" in os.environ:
            parse = urlparse(os.environ["ZOOKEEPER_URI"])
            (host, port) = (parse.hostname, parse.port)
            fixture = ExternalService(host, port)
        else:
            (host, port) = ("127.0.0.1", get_open_port())
            fixture = cls(host, port)

        fixture.open()
        return fixture

    def __init__(self, host, port):
        self.host = host
        self.port = port

        self.tmp_dir = None
        self.child = None

    def out(self, message):
        log.info("*** Zookeeper [%s:%d]: %s", self.host, self.port, message)

    def open(self):
        self.tmp_dir = tempfile.mkdtemp()
        self.out("Running local instance...")
        log.info("  host    = %s", self.host)
        log.info("  port    = %s", self.port)
        log.info("  tmp_dir = %s", self.tmp_dir)

        # Generate configs
        template = self.test_resource("zookeeper.properties")
        properties = os.path.join(self.tmp_dir, "zookeeper.properties")
        self.render_template(template, properties, vars(self))

        # Configure Zookeeper child process
        args = self.kafka_run_class_args("org.apache.zookeeper.server.quorum.QuorumPeerMain", properties)
        env = self.kafka_run_class_env()

        # Party!
        self.out("Starting...")
        while True:
            self.child = SpawnedService(args, env)
            self.child.start()
            if self.child.wait_for(r"binding to port", timeout=5):
                break
            self.child.stop()
        self.out("Done!")

    def close(self):
        self.out("Stopping...")
        self.child.stop()
        self.child = None
        self.out("Done!")
        shutil.rmtree(self.tmp_dir)

    def open(self):
        if self.tmp_dir is None:
            self.tmp_dir = py.path.local.mkdtemp() #pylint: disable=no-member
        self.tmp_dir.ensure(dir=True)

        self.out("Running local instance...")
        log.info("  host    = %s", self.host)
        log.info("  port    = %s", self.port or '(auto)')
        log.info("  tmp_dir = %s", self.tmp_dir.strpath)

        # Configure Zookeeper child process
        template = self.test_resource("zookeeper.properties")
        properties = self.tmp_dir.join("zookeeper.properties")
        args = self.kafka_run_class_args("org.apache.zookeeper.server.quorum.QuorumPeerMain",
                                         properties.strpath)
        env = self.kafka_run_class_env()

        # Party!
        timeout = 5
        max_timeout = 120
        backoff = 1
        end_at = time.time() + max_timeout
        tries = 1
        auto_port = (self.port is None)
        while time.time() < end_at:
            if auto_port:
                self.port = get_open_port()
            self.out('Attempting to start on port %d (try #%d)' % (self.port, tries))
            self.render_template(template, properties, vars(self))
            self.child = SpawnedService(args, env)
            self.child.start()
            timeout = min(timeout, max(end_at - time.time(), 0))
            if self.child.wait_for(r"binding to port", timeout=timeout):
                break
            self.child.dump_logs()
            self.child.stop()
            timeout *= 2
            time.sleep(backoff)
            tries += 1
            backoff += 1
        else:
            raise RuntimeError('Failed to start Zookeeper before max_timeout')
        self.out("Done!")
        atexit.register(self.close)

    def open(self):
        self.tmp_dir = tempfile.mkdtemp()
        self.out("Running local instance...")
        log.info("  host    = %s", self.host)
        log.info("  port    = %s", self.port)
        log.info("  tmp_dir = %s", self.tmp_dir)

        # Generate configs
        template = self.test_resource("zookeeper.properties")
        properties = os.path.join(self.tmp_dir, "zookeeper.properties")
        self.render_template(template, properties, vars(self))

        # Configure Zookeeper child process
        args = self.kafka_run_class_args("org.apache.zookeeper.server.quorum.QuorumPeerMain", properties)
        env = self.kafka_run_class_env()

        # Party!
        timeout = 5
        max_timeout = 30
        backoff = 1
        end_at = time.time() + max_timeout
        tries = 1
        while time.time() < end_at:
            self.out('Attempting to start (try #%d)' % tries)
            try:
                os.stat(properties)
            except:
                log.warning('Config %s not found -- re-rendering', properties)
                self.render_template(template, properties, vars(self))
            self.child = SpawnedService(args, env)
            self.child.start()
            timeout = min(timeout, max(end_at - time.time(), 0))
            if self.child.wait_for(r"binding to port", timeout=timeout):
                break
            self.child.stop()
            timeout *= 2
            time.sleep(backoff)
            tries += 1
        else:
            raise Exception('Failed to start Zookeeper before max_timeout')
        self.out("Done!")
        atexit.register(self.close)

    def open(self):
        self.tmp_dir = tempfile.mkdtemp()
        self.out("Running local instance...")
        logging.info("  host    = %s", self.host)
        logging.info("  port    = %s", self.port)
        logging.info("  tmp_dir = %s", self.tmp_dir)

        # Generate configs
        template = self.test_resource("zookeeper.properties")
        properties = os.path.join(self.tmp_dir, "zookeeper.properties")
        self.render_template(template, properties, vars(self))

        # Configure Zookeeper child process
        args = self.kafka_run_class_args("org.apache.zookeeper.server.quorum.QuorumPeerMain", properties)
        env = self.kafka_run_class_env()
        self.child = SpawnedService(args, env)

        # Party!
        self.out("Starting...")
        self.child.start()
        self.child.wait_for(r"Snapshotting")
        self.out("Done!")

    def start(self):
        # Configure Kafka child process
        properties = self.tmp_dir.join("kafka.properties")
        template = self.test_resource("kafka.properties")
        args = self.kafka_run_class_args("kafka.Kafka", properties.strpath)
        env = self.kafka_run_class_env()

        timeout = 5
        max_timeout = 120
        backoff = 1
        end_at = time.time() + max_timeout
        tries = 1
        auto_port = (self.port is None)
        while time.time() < end_at:
            # We have had problems with port conflicts on travis
            # so we will try a different port on each retry
            # unless the fixture was passed a specific port
            if auto_port:
                self.port = get_open_port()
            self.out('Attempting to start on port %d (try #%d)' % (self.port, tries))
            self.render_template(template, properties, vars(self))
            self.child = SpawnedService(args, env)
            self.child.start()
            timeout = min(timeout, max(end_at - time.time(), 0))
            if self.child.wait_for(self.start_pattern, timeout=timeout):
                break
            self.child.dump_logs()
            self.child.stop()
            timeout *= 2
            time.sleep(backoff)
            tries += 1
            backoff += 1
        else:
            raise RuntimeError('Failed to start KafkaInstance before max_timeout')

        (self._client,) = self.get_clients(1, '_internal_client')

        self.out("Done!")
        self.running = True

class KafkaFixture(Fixture):
    @classmethod
    def instance(cls, broker_id, zk_host, zk_port,
                 zk_chroot=None, port=None, replicas=1, partitions=2):
        if zk_chroot is None:
            zk_chroot = "kafka-python_" + str(uuid.uuid4()).replace("-", "_")
        if "KAFKA_URI" in os.environ:
            parse = urlparse(os.environ["KAFKA_URI"])
            (host, port) = (parse.hostname, parse.port)
            fixture = ExternalService(host, port)
        else:
            if port is None:
                port = get_open_port()
            host = "127.0.0.1"
            fixture = KafkaFixture(host, port, broker_id, zk_host, zk_port, zk_chroot,
                                   replicas=replicas, partitions=partitions)
            fixture.open()
        return fixture

    def __init__(self, host, port, broker_id, zk_host, zk_port, zk_chroot, replicas=1, partitions=2):
        self.host = host
        self.port = port

        self.broker_id = broker_id

        self.zk_host = zk_host
        self.zk_port = zk_port
        self.zk_chroot = zk_chroot

        self.replicas = replicas
        self.partitions = partitions

        self.tmp_dir = None
        self.child = None
        self.running = False

    def out(self, message):
        log.info("*** Kafka [%s:%d]: %s", self.host, self.port, message)

    def open(self):
        if self.running:
            self.out("Instance already running")
            return

        self.tmp_dir = tempfile.mkdtemp()
        self.out("Running local instance...")
        log.info("  host       = %s", self.host)
        log.info("  port       = %s", self.port)
        log.info("  broker_id  = %s", self.broker_id)
        log.info("  zk_host    = %s", self.zk_host)
        log.info("  zk_port    = %s", self.zk_port)
        log.info("  zk_chroot  = %s", self.zk_chroot)
        log.info("  replicas   = %s", self.replicas)
        log.info("  partitions = %s", self.partitions)
        log.info("  tmp_dir    = %s", self.tmp_dir)

        # Create directories
        os.mkdir(os.path.join(self.tmp_dir, "logs"))
        os.mkdir(os.path.join(self.tmp_dir, "data"))

        # Generate configs
        template = self.test_resource("kafka.properties")
        properties = os.path.join(self.tmp_dir, "kafka.properties")
        self.render_template(template, properties, vars(self))

        # Party!
        self.out("Creating Zookeeper chroot node...")
        args = self.kafka_run_class_args("org.apache.zookeeper.ZooKeeperMain",
                                         "-server", "%s:%d" % (self.zk_host, self.zk_port),
                                         "create",
                                         "/%s" % self.zk_chroot,
                                         "kafka-python")
        env = self.kafka_run_class_env()
        proc = subprocess.Popen(args, env=env, stdout=subprocess.PIPE, stderr=subprocess.PIPE)

        if proc.wait() != 0:
            self.out("Failed to create Zookeeper chroot node")
            self.out(proc.stdout.read())
            self.out(proc.stderr.read())
            raise RuntimeError("Failed to create Zookeeper chroot node")
        self.out("Done!")

        self.out("Starting...")

        # Configure Kafka child process
        args = self.kafka_run_class_args("kafka.Kafka", properties)
        env = self.kafka_run_class_env()

        timeout = 5
        max_timeout = 30
        backoff = 1
        while True:
            self.child = SpawnedService(args, env)
            self.child.start()
            timeout = min(timeout, max_timeout)
            if self.child.wait_for(r"\[Kafka Server %d\], Started" %
                                   self.broker_id, timeout=timeout):
                break
            self.child.stop()
            timeout *= 2
#.........这里部分代码省略.........

class ZookeeperFixture(Fixture):
    @classmethod
    def instance(cls):
        if "ZOOKEEPER_URI" in os.environ:
            parse = urlparse(os.environ["ZOOKEEPER_URI"])
            (host, port) = (parse.hostname, parse.port)
            fixture = ExternalService(host, port)
        else:
            (host, port) = ("127.0.0.1", get_open_port())
            fixture = cls(host, port)

        fixture.open()
        return fixture

    def __init__(self, host, port):
        self.host = host
        self.port = port

        self.tmp_dir = None
        self.child = None

    def kafka_run_class_env(self):
        env = super(ZookeeperFixture, self).kafka_run_class_env()
        env['LOG_DIR'] = os.path.join(self.tmp_dir, 'logs')
        return env

    def out(self, message):
        log.info("*** Zookeeper [%s:%d]: %s", self.host, self.port, message)

    def open(self):
        self.tmp_dir = tempfile.mkdtemp()
        self.out("Running local instance...")
        log.info("  host    = %s", self.host)
        log.info("  port    = %s", self.port)
        log.info("  tmp_dir = %s", self.tmp_dir)

        # Generate configs
        template = self.test_resource("zookeeper.properties")
        properties = os.path.join(self.tmp_dir, "zookeeper.properties")
        self.render_template(template, properties, vars(self))

        # Configure Zookeeper child process
        args = self.kafka_run_class_args("org.apache.zookeeper.server.quorum.QuorumPeerMain", properties)
        env = self.kafka_run_class_env()

        # Party!
        timeout = 5
        max_timeout = 30
        backoff = 1
        end_at = time.time() + max_timeout
        tries = 1
        while time.time() < end_at:
            self.out('Attempting to start (try #%d)' % tries)
            try:
                os.stat(properties)
            except:
                log.warning('Config %s not found -- re-rendering', properties)
                self.render_template(template, properties, vars(self))
            self.child = SpawnedService(args, env)
            self.child.start()
            timeout = min(timeout, max(end_at - time.time(), 0))
            if self.child.wait_for(r"binding to port", timeout=timeout):
                break
            self.child.stop()
            timeout *= 2
            time.sleep(backoff)
            tries += 1
        else:
            raise Exception('Failed to start Zookeeper before max_timeout')
        self.out("Done!")
        atexit.register(self.close)

    def close(self):
        if self.child is None:
            return
        self.out("Stopping...")
        self.child.stop()
        self.child = None
        self.out("Done!")
        shutil.rmtree(self.tmp_dir)

    def __del__(self):
        self.close()

#.........这里部分代码省略.........
        self.running = False

    def kafka_run_class_env(self):
        env = super(KafkaFixture, self).kafka_run_class_env()
        env['LOG_DIR'] = os.path.join(self.tmp_dir, 'logs')
        return env

    def out(self, message):
        log.info("*** Kafka [%s:%d]: %s", self.host, self.port, message)

    def open(self):
        if self.running:
            self.out("Instance already running")
            return

        self.tmp_dir = tempfile.mkdtemp()
        self.out("Running local instance...")
        log.info("  host       = %s", self.host)
        log.info("  port       = %s", self.port)
        log.info("  transport  = %s", self.transport)
        log.info("  broker_id  = %s", self.broker_id)
        log.info("  zk_host    = %s", self.zk_host)
        log.info("  zk_port    = %s", self.zk_port)
        log.info("  zk_chroot  = %s", self.zk_chroot)
        log.info("  replicas   = %s", self.replicas)
        log.info("  partitions = %s", self.partitions)
        log.info("  tmp_dir    = %s", self.tmp_dir)

        # Create directories
        os.mkdir(os.path.join(self.tmp_dir, "logs"))
        os.mkdir(os.path.join(self.tmp_dir, "data"))

        # Generate configs
        template = self.test_resource("kafka.properties")
        properties = os.path.join(self.tmp_dir, "kafka.properties")
        self.render_template(template, properties, vars(self))

        # Party!
        self.out("Creating Zookeeper chroot node...")
        args = self.kafka_run_class_args("org.apache.zookeeper.ZooKeeperMain",
                                         "-server", "%s:%d" % (self.zk_host, self.zk_port),
                                         "create",
                                         "/%s" % self.zk_chroot,
                                         "kafka-python")
        env = self.kafka_run_class_env()
        proc = subprocess.Popen(args, env=env, stdout=subprocess.PIPE, stderr=subprocess.PIPE)

        if proc.wait() != 0:
            self.out("Failed to create Zookeeper chroot node")
            self.out(proc.stdout.read())
            self.out(proc.stderr.read())
            raise RuntimeError("Failed to create Zookeeper chroot node")
        self.out("Done!")

        # Configure Kafka child process
        args = self.kafka_run_class_args("kafka.Kafka", properties)
        env = self.kafka_run_class_env()

        timeout = 5
        max_timeout = 30
        backoff = 1
        end_at = time.time() + max_timeout
        tries = 1
        while time.time() < end_at:
            self.out('Attempting to start (try #%d)' % tries)
            try:
                os.stat(properties)
            except:
                log.warning('Config %s not found -- re-rendering', properties)
                self.render_template(template, properties, vars(self))
            self.child = SpawnedService(args, env)
            self.child.start()
            timeout = min(timeout, max(end_at - time.time(), 0))
            if self.child.wait_for(r"\[Kafka Server %d\], Started" %
                                   self.broker_id, timeout=timeout):
                break
            self.child.stop()
            timeout *= 2
            time.sleep(backoff)
            tries += 1
        else:
            raise Exception('Failed to start KafkaInstance before max_timeout')
        self.out("Done!")
        self.running = True
        atexit.register(self.close)

    def __del__(self):
        self.close()

    def close(self):
        if not self.running:
            self.out("Instance already stopped")
            return

        self.out("Stopping...")
        self.child.stop()
        self.child = None
        self.out("Done!")
        shutil.rmtree(self.tmp_dir)
        self.running = False

    def open(self):
        if self.running:
            self.out("Instance already running")
            return

        self.tmp_dir = tempfile.mkdtemp()
        self.out("Running local instance...")
        log.info("  host       = %s", self.host)
        log.info("  port       = %s", self.port or '(auto)')
        log.info("  transport  = %s", self.transport)
        log.info("  broker_id  = %s", self.broker_id)
        log.info("  zk_host    = %s", self.zk_host)
        log.info("  zk_port    = %s", self.zk_port)
        log.info("  zk_chroot  = %s", self.zk_chroot)
        log.info("  replicas   = %s", self.replicas)
        log.info("  partitions = %s", self.partitions)
        log.info("  tmp_dir    = %s", self.tmp_dir)

        # Create directories
        os.mkdir(os.path.join(self.tmp_dir, "logs"))
        os.mkdir(os.path.join(self.tmp_dir, "data"))

        self.out("Creating Zookeeper chroot node...")
        args = self.kafka_run_class_args("org.apache.zookeeper.ZooKeeperMain",
                                         "-server", "%s:%d" % (self.zk_host, self.zk_port),
                                         "create",
                                         "/%s" % self.zk_chroot,
                                         "kafka-python")
        env = self.kafka_run_class_env()
        proc = subprocess.Popen(args, env=env, stdout=subprocess.PIPE, stderr=subprocess.PIPE)

        if proc.wait() != 0:
            self.out("Failed to create Zookeeper chroot node")
            self.out(proc.stdout.read())
            self.out(proc.stderr.read())
            raise RuntimeError("Failed to create Zookeeper chroot node")
        self.out("Done!")

        # Configure Kafka child process
        properties = os.path.join(self.tmp_dir, "kafka.properties")
        template = self.test_resource("kafka.properties")
        args = self.kafka_run_class_args("kafka.Kafka", properties)
        env = self.kafka_run_class_env()

        timeout = 5
        max_timeout = 30
        backoff = 1
        end_at = time.time() + max_timeout
        tries = 1
        auto_port = (self.port is None)
        while time.time() < end_at:
            # We have had problems with port conflicts on travis
            # so we will try a different port on each retry
            # unless the fixture was passed a specific port
            if auto_port:
                self.port = get_open_port()
            self.out('Attempting to start on port %d (try #%d)' % (self.port, tries))
            self.render_template(template, properties, vars(self))
            self.child = SpawnedService(args, env)
            self.child.start()
            timeout = min(timeout, max(end_at - time.time(), 0))
            if self.child.wait_for(r"\[Kafka Server %d\], Started" %
                                   self.broker_id, timeout=timeout):
                break
            self.child.dump_logs()
            self.child.stop()
            timeout *= 2
            time.sleep(backoff)
            tries += 1
        else:
            raise Exception('Failed to start KafkaInstance before max_timeout')
        self.out("Done!")
        self.running = True
        atexit.register(self.close)

#.........这里部分代码省略.........
                                         "/%s" % self.zk_chroot,
                                         "kafka-python")
        env = self.kafka_run_class_env()
        proc = subprocess.Popen(args, env=env, stdout=subprocess.PIPE, stderr=subprocess.PIPE)

        if proc.wait() != 0 or proc.returncode != 0:
            self.out("Failed to create Zookeeper chroot node")
            self.out(proc.stdout.read())
            self.out(proc.stderr.read())
            raise RuntimeError("Failed to create Zookeeper chroot node")
        self.out("Kafka chroot created in Zookeeper!")

    def start(self):
        # Configure Kafka child process
        properties = self.tmp_dir.join("kafka.properties")
        template = self.test_resource("kafka.properties")
        args = self.kafka_run_class_args("kafka.Kafka", properties.strpath)
        env = self.kafka_run_class_env()

        timeout = 5
        max_timeout = 120
        backoff = 1
        end_at = time.time() + max_timeout
        tries = 1
        auto_port = (self.port is None)
        while time.time() < end_at:
            # We have had problems with port conflicts on travis
            # so we will try a different port on each retry
            # unless the fixture was passed a specific port
            if auto_port:
                self.port = get_open_port()
            self.out('Attempting to start on port %d (try #%d)' % (self.port, tries))
            self.render_template(template, properties, vars(self))
            self.child = SpawnedService(args, env)
            self.child.start()
            timeout = min(timeout, max(end_at - time.time(), 0))
            if self.child.wait_for(self.start_pattern, timeout=timeout):
                break
            self.child.dump_logs()
            self.child.stop()
            timeout *= 2
            time.sleep(backoff)
            tries += 1
            backoff += 1
        else:
            raise RuntimeError('Failed to start KafkaInstance before max_timeout')

        (self._client,) = self.get_clients(1, '_internal_client')

        self.out("Done!")
        self.running = True

    def open(self):
        if self.running:
            self.out("Instance already running")
            return

        # Create directories
        if self.tmp_dir is None:
            self.tmp_dir = py.path.local.mkdtemp() #pylint: disable=no-member
        self.tmp_dir.ensure(dir=True)
        self.tmp_dir.ensure('logs', dir=True)
        self.tmp_dir.ensure('data', dir=True)

        self.out("Running local instance...")
        log.info("  host       = %s", self.host)

class ZookeeperFixture(Fixture):
    @classmethod
    def instance(cls):
        if "ZOOKEEPER_URI" in os.environ:
            parse = urlparse(os.environ["ZOOKEEPER_URI"])
            (host, port) = (parse.hostname, parse.port)
            fixture = ExternalService(host, port)
        else:
            (host, port) = ("127.0.0.1", None)
            fixture = cls(host, port)

        fixture.open()
        return fixture

    def __init__(self, host, port, tmp_dir=None):
        super(ZookeeperFixture, self).__init__()
        self.host = host
        self.port = port

        self.tmp_dir = tmp_dir

    def kafka_run_class_env(self):
        env = super(ZookeeperFixture, self).kafka_run_class_env()
        env['LOG_DIR'] = self.tmp_dir.join('logs').strpath
        return env

    def out(self, message):
        log.info("*** Zookeeper [%s:%s]: %s", self.host, self.port or '(auto)', message)

    def open(self):
        if self.tmp_dir is None:
            self.tmp_dir = py.path.local.mkdtemp() #pylint: disable=no-member
        self.tmp_dir.ensure(dir=True)

        self.out("Running local instance...")
        log.info("  host    = %s", self.host)
        log.info("  port    = %s", self.port or '(auto)')
        log.info("  tmp_dir = %s", self.tmp_dir.strpath)

        # Configure Zookeeper child process
        template = self.test_resource("zookeeper.properties")
        properties = self.tmp_dir.join("zookeeper.properties")
        args = self.kafka_run_class_args("org.apache.zookeeper.server.quorum.QuorumPeerMain",
                                         properties.strpath)
        env = self.kafka_run_class_env()

        # Party!
        timeout = 5
        max_timeout = 120
        backoff = 1
        end_at = time.time() + max_timeout
        tries = 1
        auto_port = (self.port is None)
        while time.time() < end_at:
            if auto_port:
                self.port = get_open_port()
            self.out('Attempting to start on port %d (try #%d)' % (self.port, tries))
            self.render_template(template, properties, vars(self))
            self.child = SpawnedService(args, env)
            self.child.start()
            timeout = min(timeout, max(end_at - time.time(), 0))
            if self.child.wait_for(r"binding to port", timeout=timeout):
                break
            self.child.dump_logs()
            self.child.stop()
            timeout *= 2
            time.sleep(backoff)
            tries += 1
            backoff += 1
        else:
            raise RuntimeError('Failed to start Zookeeper before max_timeout')
        self.out("Done!")
        atexit.register(self.close)

    def close(self):
        if self.child is None:
            return
        self.out("Stopping...")
        self.child.stop()
        self.child = None
        self.out("Done!")
        self.tmp_dir.remove()

    def __del__(self):
        self.close()