15 lines
1.4 KiB
Markdown
15 lines
1.4 KiB
Markdown
# wrappers
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Various wrapper classes I use in my projects.
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These are specifically written for my use cases, though feel free to use.
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MessageBroker: Wraps `amqp-connection-manager` and `amqplib` by extension. Ensures smooth failover when connected to a cluster.
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MariaDB: Wraps `mysql`. Takes care of connection pooling whether connecting to a cluster or single instance.
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MongoDB: Wraps `mongodb`. Primarily just adds helper functions.
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The MariaDB wrapper takes care of automatic cluster status updates if supplied with an event source, it provides a listener through the `statusUpdateListener` property. It ensures that the wrapper does not query a node that is not currently synced in the cluster. Somewhat similar to how the MessageBroker handles automatic failover.
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The MongoDB native driver seems to take care of this stuff by itself, so it remains a fairly trivial wrapper with just helper functions.
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A notification script that can be used to listen for cluster updates is located in `/scripts/wsrep_notify.sh`. It takes the arguments provided by galera and posts them to a given URL, the JSON payload is then to be fed into the status update listener of the MariaDB wrapper.
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Expected to be used together with a parent class that has a `createLogger` method, as defined in `/src/interfaces/Server.ts` and `/src/interfaces/Logger.ts`, utilising the logger from https://git.corgi.wtf/Navy.gif/logger. |
