[docker] Correct commands, collect volume info

Fixes the potential for 'docker logs' to be called against images and
adds volume collection for docker like #1579 does for podman.

Changes image inspections to use the image name, unless the name or tag
is 'none' in which case the image ID is used.

Resolves: #1580

Signed-off-by: Jake Hunsaker <jhunsake@redhat.com>
Signed-off-by: Bryn M. Reeves <bmr@redhat.com>

1 files changed, 28 insertions, 15 deletions

diff --git a/sos/plugins/docker.py b/sos/plugins/docker.py
index 3cce15ed..d8c854f9 100644
--- a/sos/plugins/docker.py
+++ b/sos/plugins/docker.py
@@ -72,21 +72,34 @@ class Docker(Plugin):
         if self.get_option('all'):
             ps_cmd = "%s -a" % ps_cmd
 
-        img_cmd = 'docker images -q'
-        insp = set()
-
-        for icmd in [ps_cmd, img_cmd]:
-            result = self.get_command_output(icmd)
-            if result['status'] == 0:
-                for con in result['output'].splitlines():
-                    insp.add(con)
-
-        insp = list(insp)
-        if insp:
-            for container in insp:
-                self.add_cmd_output("docker inspect %s" % container)
-                if self.get_option('logs'):
-                    self.add_cmd_output("docker logs -t %s" % container)
+        fmt = '{{lower .Repository}}:{{lower .Tag}} {{lower .ID}}'
+        img_cmd = "docker images --format='%s'" % fmt
+        vol_cmd = 'docker volume ls -q'
+
+        containers = self._get_docker_list(ps_cmd)
+        images = self._get_docker_list(img_cmd)
+        volumes = self._get_docker_list(vol_cmd)
+
+        for container in containers:
+            self.add_cmd_output("docker inspect %s" % container)
+            if self.get_option('logs'):
+                self.add_cmd_output("docker logs -t %s" % container)
+
+        for img in images:
+            name, img_id = img.strip().split()
+            insp = name if 'none' not in name else img_id
+            self.add_cmd_output("docker inspect %s" % insp)
+
+        for vol in volumes:
+            self.add_cmd_output("docker volume inspect %s" % vol)
+
+    def _get_docker_list(self, cmd):
+        ret = []
+        result = self.get_command_output(cmd)
+        if result['status'] == 0:
+            for ent in result['output'].splitlines():
+                ret.append(ent)
+        return ret
 
     def postproc(self):
         # Attempts to match key=value pairs inside container inspect output