| # 6. Task serialization |
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| Date: 2019-10-02 |
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| ## Status |
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| Accepted (lazy consensus) & implemented |
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| ## Context |
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| By switching the task manager to a distributed implementation, we need to be able to execute a `Task` on any node of the cluster. |
| We need to have a way to describe the `Task` to be executed and serialize it in order to be able to store it in the `Created` event. Which will be persisted in the Event Store, and will be send in the event bus. |
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| At this point in time a `Task` can contain any arbitrary code. It's not an element of a finite set of actions. |
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| ## Decision |
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| * Create a `Factory` for one `Task` |
| * Inject a `Factory` `Registry` via a Guice Module |
| * The `Task` `Serialization` will be done in JSON, We will get inspired by `EventSerializer` |
| * Every `Task`s should have a specific integration test demonstrating that serialization works |
| * Each `Task` is responsible of eventually dealing with the different versions of the serialized information |
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| ## Consequences |
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| * Every `Task`s should be serializable. |
| * Every `Task`s should provide a `Factory` which would be responsible to deserialize the task and instantiate it. |
| * Every `Factory` should be registered through a Guice module to be created for each project containing a `Factory` |
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| ## References |
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| * [JIRA ticket](https://issues.apache.org/jira/projects/JAMES/issues/JAMES-2813) |
