62c1f10e7b
Adds a PluginLoader which loads classes defined as stevedore plugins at io.murano.extension namespace and registers them as MuranoPL classes in class loader. Modifies the ClientManager class to make the _get_client method public, so other code may use it to add custom clients. This is useful for plugins which may define their own clients. Modifies the configuration settings adding 'enabled_plugins' parameter to control which of the installed plugins are active. Adds an example plugin which encapsulates Glance interaction logic to: * List all available glance images * Get Image by ID * Get Image by Name * Output image info with murano-related metadata Adds a demo application which demonstrates the usage of plugin. The app consist of the following components: * An 'ImageValidatorMixin' class which inherits generic instance class (io.murano.resources.Instance) and adds a method capable to validate Instance's image for having appropriate murano metadata type. This class may be used as a mixin when added to inheritance hierarchy of concrete instance classes. * A concrete class called DemoInstance which inherits from io.murano.resources.LinuxMuranoInstance and ImageValidatorMixin to add the image validation logic to standard Murano-enabled Linux-based instance. * An application which deploys a single VM using the DemoInstance class if the tag on user-supplied image matches the user-supplied constant. The ImageValidatorMixin demonstrates the instantiation of plugin-provided class and its usage, as well as handling of exception which may be thrown if the plugin is not installed in the environment. Change-Id: I978339d87033bbe38dad4c2102612d8f3a1eb3c3 Implements-blueprint: plugable-classes
41 lines
1.0 KiB
YAML
41 lines
1.0 KiB
YAML
Namespaces:
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=: io.murano.apps.example.plugin
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std: io.murano
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res: io.murano.resources
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sys: io.murano.system
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Name: DemoApp
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Extends: std:Application
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Properties:
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name:
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Contract: $.string().notNull()
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instance:
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Contract: $.class(res:Instance).notNull()
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Workflow:
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initialize:
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Body:
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- $.environment: $.find(std:Environment).require()
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deploy:
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Body:
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- If: !yaql "not bool($.getAttr(deployed))"
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Then:
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- $this.find(std:Environment).reporter.report($this, 'Creating VM ')
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- $securityGroupIngress:
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- ToPort: 22
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FromPort: 22
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IpProtocol: tcp
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External: True
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- $.environment.securityGroupManager.addGroupIngress($securityGroupIngress)
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- $.instance.deploy()
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- $resources: new(sys:Resources)
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- $this.find(std:Environment).reporter.report($this, 'Test VM is installed')
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- $.host: $.instance.ipAddresses[0]
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- $.user: 'root'
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- $.setAttr(deployed, True)
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