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Multiple fixes to container name detection #206

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Multiple fixes to container name detection #206

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acc8296
Fixed container name matching for containers with multiple names.
jperville Aug 29, 2014
cac59af
Made container name matching more strict.
jperville Aug 29, 2014
50b73cc
Filter out technical names when loading the current container resource.
jperville Aug 29, 2014
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10 changes: 7 additions & 3 deletions providers/container.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -128,7 +128,7 @@ def container_matches?(ps)
return false unless container_image_matches?(ps['image'])
return false unless container_command_matches_if_exists?(ps['command'])
return false unless container_name_matches_if_exists?(ps['names'])
true
false
end

def container_command_matches_if_exists?(command)
Expand All @@ -151,11 +151,11 @@ def container_image_matches?(image)

def container_name_matches?(names)
return false unless names
new_resource.container_name && new_resource.container_name == names
new_resource.container_name && names.split(',').include?(new_resource.container_name)
end

def container_name_matches_if_exists?(names)
return false if new_resource.container_name && new_resource.container_name != names
return container_name_matches?(names) if new_resource.container_name
true
end

Expand Down Expand Up @@ -225,6 +225,10 @@ def docker_containers
end
ps[name.to_s] = line[start..finish - 1].strip
end
# Filter out technical names (eg. 'my-app/db'), which appear in ps['names']
# when a container has at least another container linking to it. If these
# names are not filtered they will pollute current_resource.container_name.
ps['names'] = ps['names'].split(',').grep( /\A[^\/]+\Z/ ).join(',') # technical names always contain a '/'
ps
end
end
Expand Down