From e52d87b53d1364a1ccd67ae4bddaa04b0ebda53a Mon Sep 17 00:00:00 2001
From: Alex Polcyn <apolcyn@google.com>
Date: Thu, 7 Jun 2018 20:08:57 -0700
Subject: Add a grpclb-in-DNS interop test suite

---
 tools/run_tests/python_utils/dockerjob.py | 27 +++++++++++++++++++++++++--
 1 file changed, 25 insertions(+), 2 deletions(-)

(limited to 'tools/run_tests/python_utils/dockerjob.py')

diff --git a/tools/run_tests/python_utils/dockerjob.py b/tools/run_tests/python_utils/dockerjob.py
index 2d22dc13a0..5260f7b44b 100755
--- a/tools/run_tests/python_utils/dockerjob.py
+++ b/tools/run_tests/python_utils/dockerjob.py
@@ -20,6 +20,7 @@ import time
 import uuid
 import os
 import subprocess
+import json
 
 import jobset
 
@@ -54,6 +55,25 @@ def docker_mapped_port(cid, port, timeout_seconds=15):
                                                                          cid))
 
 
+def docker_ip_address(cid, timeout_seconds=15):
+    """Get port mapped to internal given internal port for given container."""
+    started = time.time()
+    while time.time() - started < timeout_seconds:
+        cmd = 'docker inspect %s' % cid
+        try:
+            output = subprocess.check_output(cmd, stderr=_DEVNULL, shell=True)
+            json_info = json.loads(output)
+            assert len(json_info) == 1
+            out = json_info[0]['NetworkSettings']['IPAddress']
+            if not out:
+                continue
+            return out
+        except subprocess.CalledProcessError as e:
+            pass
+    raise Exception(
+        'Non-retryable error: Failed to get ip address of container %s.' % cid)
+
+
 def wait_for_healthy(cid, shortname, timeout_seconds):
     """Wait timeout_seconds for the container to become healthy"""
     started = time.time()
@@ -74,10 +94,10 @@ def wait_for_healthy(cid, shortname, timeout_seconds):
                     (shortname, cid))
 
 
-def finish_jobs(jobs):
+def finish_jobs(jobs, suppress_failure=True):
     """Kills given docker containers and waits for corresponding jobs to finish"""
     for job in jobs:
-        job.kill(suppress_failure=True)
+        job.kill(suppress_failure=suppress_failure)
 
     while any(job.is_running() for job in jobs):
         time.sleep(1)
@@ -120,6 +140,9 @@ class DockerJob:
     def mapped_port(self, port):
         return docker_mapped_port(self._container_name, port)
 
+    def ip_address(self):
+        return docker_ip_address(self._container_name)
+
     def wait_for_healthy(self, timeout_seconds):
         wait_for_healthy(self._container_name, self._spec.shortname,
                          timeout_seconds)
-- 
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