Adding README file for "join" example
Change-Id: Ib46f41be63b9fbd0f82d37ed0a1f522a28bbdf07
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"join" control example (based on v2 API/DSL)
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=============================================
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Workflow "create_vm_with_volume" demonstrates usage of "join" workflow control
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to synchronize multiple workflow routes. Specifically, it creates a virtual
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machine and Cinder volume in parallel, waits till their completion using "join"
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and attaches the volume to the newly created virtual machine.
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Note: Unlike some other examples this example doesn't use workbook concept.
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File "create_vm_with_volume" contains a workflow definition in the first place
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so in order to load the workflow "mistral workflow-create" CLI command must be
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used (not "mistral workbook-create").
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To run the example:
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1. Load workflow create_vm_with_volume.yaml:
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mistral workflow-create create_vm_with_volume.yaml
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1. Create input.json file containing workflow input parameters as follows:
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{
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"server_name": "mistral_test_vm",
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"image_id": "aaacd887-5afa-4cb7-a33d-1ef0b72d21c4",
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"flavor_id": "2",
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"ssh_username": "ubuntu",
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"ssh_password": "my_pass",
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"volume_name": "mistral_test_volume"
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}
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1. Start workflow:
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mistral execution-create create_vm_with_volume input.json
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1. Using execution id from the previous step wait for completion (workflow SUCCESS state):
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mistral execution-get <execution_id>
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1. Make sure that a virtual machine and a volume have been created.
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It can be done by opening Horizon UI or using Nova client (python-novaclient).
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