moby--moby/pkg/plugins
Antonio Murdaca c28fc06e00 pkg: authorization: do not register the same plugin
This patches avoids registering (and calling) the same plugin more than
once. Using an helper map which indexes by name guarantees this and keeps
the order.
The behavior of overriding the same name in a flag is consistent with,
for instance, the `docker run -v /test -v /test` flag which register
the volume just once.
Adds integration tests.

Without this patch:
```
Dec 20 19:34:52 localhost.localdomain docker[9988]:
time="2015-12-20T19:34:52.080901676+01:00" level=debug msg="Calling
GET
/v1.22/info"
Dec 20 19:34:52 localhost.localdomain docker[9988]:
time="2015-12-20T19:34:52.081213202+01:00" level=debug msg="AuthZ
request using plugin docker-novolume-plugin"
Dec 20 19:34:52 localhost.localdomain docker[9988]:
time="2015-12-20T19:34:52.081268132+01:00" level=debug
msg="docker-novolume-plugin implements: authz"
Dec 20 19:34:52 localhost.localdomain docker[9988]:
time="2015-12-20T19:34:52.081699788+01:00" level=debug msg="AuthZ
request using plugin docker-novolume-plugin"
Dec 20 19:34:52 localhost.localdomain docker[9988]:
time="2015-12-20T19:34:52.081762507+01:00" level=debug
msg="docker-novolume-plugin implements: authz"
Dec 20 19:34:52 localhost.localdomain docker[9988]:
time="2015-12-20T19:34:52.082092480+01:00" level=debug msg="GET
/v1.22/info"
Dec 20 19:34:52 localhost.localdomain docker[9988]:
time="2015-12-20T19:34:52.628691038+01:00" level=debug msg="AuthZ
response using plugin docker-novolume-plugin"
Dec 20 19:34:52 localhost.localdomain docker[9988]:
time="2015-12-20T19:34:52.629880930+01:00" level=debug msg="AuthZ
response using plugin docker-novolume-plugin"
```

With this patch:
```
Dec 20 19:37:32 localhost.localdomain docker[16620]:
time="2015-12-20T19:37:32.376523958+01:00" level=debug msg="Calling
GET
/v1.22/info"
Dec 20 19:37:32 localhost.localdomain docker[16620]:
time="2015-12-20T19:37:32.376715483+01:00" level=debug msg="AuthZ
request using plugin docker-novolume-plugin"
Dec 20 19:37:32 localhost.localdomain docker[16620]:
time="2015-12-20T19:37:32.376771230+01:00" level=debug
msg="docker-novolume-plugin implements: authz"
Dec 20 19:37:32 localhost.localdomain docker[16620]:
time="2015-12-20T19:37:32.377698897+01:00" level=debug msg="GET
/v1.22/info"
Dec 20 19:37:32 localhost.localdomain docker[16620]:
time="2015-12-20T19:37:32.951016441+01:00" level=debug msg="AuthZ
response using plugin docker-novolume-plugin"
```

Also removes a somehow duplicate debug statement (leaving only the
second one as it's a loop of plugin's manifest):
```
Dec 20 19:52:30 localhost.localdomain docker[25767]:
time="2015-12-20T19:52:30.544090518+01:00" level=debug
msg="docker-novolume-plugin's manifest: &{[authz]}"
Dec 20 19:52:30 localhost.localdomain docker[25767]:
time="2015-12-20T19:52:30.544170677+01:00" level=debug
msg="docker-novolume-plugin implements: authz"
```

Signed-off-by: Antonio Murdaca <runcom@redhat.com>
2015-12-23 21:08:40 +01:00
..
pluginrpc-gen Add README for pluginrpc-gen 2015-09-22 19:34:44 -04:00
client.go authZ: more fixes 2015-12-18 16:29:01 +01:00
client_test.go pkg/plugins/client.go: don't try to encode os decode if it's nil 2015-12-05 02:55:50 -05:00
discovery.go pkg: authorization: do not register the same plugin 2015-12-23 21:08:40 +01:00
discovery_test.go Separate plugin sockets and specs. 2015-07-16 14:20:07 -07:00
plugins.go pkg: authorization: do not register the same plugin 2015-12-23 21:08:40 +01:00