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Diffstat (limited to 'docs/clamp/acm/api-protocol/system-level-dialogues.rst')
| -rw-r--r-- | docs/clamp/acm/api-protocol/system-level-dialogues.rst | 42 |
1 files changed, 41 insertions, 1 deletions
diff --git a/docs/clamp/acm/api-protocol/system-level-dialogues.rst b/docs/clamp/acm/api-protocol/system-level-dialogues.rst index e3ee09ab..6be26e18 100644 --- a/docs/clamp/acm/api-protocol/system-level-dialogues.rst +++ b/docs/clamp/acm/api-protocol/system-level-dialogues.rst @@ -211,8 +211,48 @@ The ACM Runtime receives and stores the responses. .. image:: ../images/system-dialogues/UpdateUsageState.png -End of Document +3.11 Failure handling in ACM +---------------------------- +After any ACM operation is completed, one of the following result messages will be updated in the ACM. These result values are +updated along with the overall state of the ACM instance. + + - NO_ERROR + - TIMEOUT + - FAILED + +The enum result values 'NO_ERROR' and 'FAILED' have to be set by the participants while reporting the CompositionState back to the runtime. + +If the operation succeeds, the participant is required to update the result value with 'NO_ERROR' while reporting the composition state. + +.. image:: ../images/system-dialogues/SuccessAcmResult.png + +The result value should be updated as 'FAILED' by the participants when any failures occurred. +Also in case of failures, the overall state of the composition remains in any of the transitioning states (DEPLOYING, UNDEPLOYING, PRIMING, UPDATING) +with the appropriate result values updated by the participant. + +.. image:: ../images/system-dialogues/FailedAcmResult.png +Runtime marks the operation result with the value 'TIMEOUT' when the participant gets disconnected from the ACM-R in the middle of any ACM operation. +When the participant fails to report the periodic heartbeat during an ACM operation, the operation result is then marked as 'TIMEOUT' by the ACM-R after the configured waiting limit is +reached. + +.. image:: ../images/system-dialogues/TimeoutAcmResult.png + +The following parameter is set in the application properties for the runtime to configure the 'TIMEOUT' value in milliseconds. + +.. code-block:: yaml + + runtime: + participantParameters: + maxStatusWaitMs: 100000 --> Denotes the maximum wait time by the runtime to receive the periodic status update from the participants + +An ACM operation has to be completed and updated with any of the above specified result values in order to allow the user to trigger subsequent requests. +The user cannot trigger any state change events before the operation gets completed. When an operation is marked 'TIMEOUT', the following scenarios are applicable. + + - The participant might come back ONLINE and complete the operation to mark the result with 'NO_ERROR' or 'FAILED' + - The user can trigger another state change event to the ACM. + +End of Document |