From 6200ccb39cf91c31b2e7fa9e38a4c3df9312fe98 Mon Sep 17 00:00:00 2001
From: Alexey Zatelepin <ztlpn@yandex-team.ru>
Date: Tue, 23 May 2017 20:13:36 +0300
Subject: [PATCH] improve waiting for instance startup in integration tests
 [#CLICKHOUSE-2821]

---
 dbms/tests/integration/helpers/cluster.py | 34 +++++++++++++++++------
 1 file changed, 25 insertions(+), 9 deletions(-)

diff --git a/dbms/tests/integration/helpers/cluster.py b/dbms/tests/integration/helpers/cluster.py
index 3c43f9993e..942375e96d 100644
--- a/dbms/tests/integration/helpers/cluster.py
+++ b/dbms/tests/integration/helpers/cluster.py
@@ -39,6 +39,8 @@ class ClickHouseCluster:
         self.base_cmd = ['docker-compose', '--project-directory', self.base_dir, '--project-name', self.project_name]
         self.instances = {}
         self.with_zookeeper = False
+
+        self.docker_client = None
         self.is_up = False
 
 
@@ -51,10 +53,10 @@ class ClickHouseCluster:
         """
 
         if self.is_up:
-            raise Exception('Can\'t add instance %s: cluster is already up!' % name)
+            raise Exception("Can\'t add instance %s: cluster is already up!" % name)
 
         if name in self.instances:
-            raise Exception('Can\'t add instance %s: there is already an instance with the same name!' % name)
+            raise Exception("Can\'t add instance `%s': there is already an instance with the same name!" % name)
 
         instance = ClickHouseInstance(self.base_dir, name, custom_configs, with_zookeeper, self.base_configs_dir, self.server_bin_path)
         self.instances[name] = instance
@@ -75,15 +77,19 @@ class ClickHouseCluster:
 
         subprocess.check_call(self.base_cmd + ['up', '-d'])
 
-        docker_client = docker.from_env()
+        self.docker_client = docker.from_env()
+
+        start_deadline = time.time() + 10.0 # seconds
         for instance in self.instances.values():
+            instance.docker_client = self.docker_client
+
             # According to how docker-compose names containers.
             instance.docker_id = self.project_name + '_' + instance.name + '_1'
 
-            container = docker_client.containers.get(instance.docker_id)
+            container = self.docker_client.containers.get(instance.docker_id)
             instance.ip_address = container.attrs['NetworkSettings']['Networks'].values()[0]['IPAddress']
 
-            instance.wait_for_start()
+            instance.wait_for_start(start_deadline)
 
             instance.client = Client(instance.ip_address, command=self.client_bin_path)
 
@@ -96,7 +102,10 @@ class ClickHouseCluster:
         subprocess.check_call(self.base_cmd + ['down', '--volumes'])
         self.is_up = False
 
+        self.docker_client = None
+
         for instance in self.instances.values():
+            instance.docker_client = None
             instance.docker_id = None
             instance.ip_address = None
             instance.client = None
@@ -143,6 +152,7 @@ class ClickHouseInstance:
         self.path = p.abspath(p.join(base_path, name))
         self.docker_compose_path = p.join(self.path, 'docker_compose.yml')
 
+        self.docker_client = None
         self.docker_id = None
         self.ip_address = None
         self.client = None
@@ -152,18 +162,24 @@ class ClickHouseInstance:
         return self.client.query(sql, stdin)
 
 
-    def wait_for_start(self, timeout=10.0):
-        deadline = time.time() + timeout
+    def wait_for_start(self, deadline):
         while True:
-            if time.time() >= deadline:
-                raise Exception("Timed out while waiting for instance {} with ip address {} to start".format(self.name, self.ip_address))
+            if self.docker_client.containers.get(self.docker_id).status == 'exited':
+                raise Exception("Instance `{}' failed to start".format(self.name))
+
+            time_left = deadline - time.time()
+            if time_left <= 0:
+                raise Exception("Timed out while waiting for instance `{}' with ip address {} to start".format(self.name, self.ip_address))
 
             # Repeatedly poll the instance address until there is something that listens there.
             # Usually it means that ClickHouse is ready to accept queries.
             try:
                 sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+                sock.settimeout(time_left)
                 sock.connect((self.ip_address, 9000))
                 return
+            except socket.timeout:
+                continue
             except socket.error as e:
                 if e.errno == errno.ECONNREFUSED:
                     time.sleep(0.1)
-- 
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