This PR builds up on the pass-through DB driver to a fully functioning DB driver implementation via our RPC layer.
To keep things separate from the plugin RPC API, and have the ability to move fast with changes, a separate field Driver is added to MattermostPlugin. Typically the field which is required to be compatible are the API and Helpers. It would be well-documented that Driver is purely for internal use by Mattermost plugins.
A new Driver interface was created which would have a client and server implementation. Every object (connection, statement, etc.) is created and added to a map on the server side. On the client side, the wrapper structs hold the object id, and communicate via the RPC API using this id.
When the server gets the object id, it picks up the appropriate object from its map and performs the operation, and sends back the data.
Some things that need to be handled are errors. Typical error types like pq.Error and mysql.MySQLError are registered with encoding/gob. But for error variables like sql.ErrNoRows, a special integer is encoded with the ErrorString struct. And on the cilent side, the integer is checked, and the appropriate error variable is returned.
Some pending things:
- Context support. This is tricky. Since context.Context is an interface, it's not possible to marshal it. We have to find a way to get the timeout value from the context and pass it.
- RowsColumnScanType(rowsID string, index int) reflect.Type API. Again, reflect.Type is an interface.
- Master/Replica API support.
* MM-34787: Add colored output for non JSON console logs
https://mattermost.atlassian.net/browse/MM-34787
```release-note
A new field EnableColor is added to LogSettings and NotificationLogSettings.
Non-JSON console logs will now be colored if that field is set to true.
```
* Trigger CI
Remote Cluster Service
- provides ability for multiple Mattermost cluster instances to create a trusted connection with each other and exchange messages
- trusted connections are managed via slash commands (for now)
- facilitates features requiring inter-cluster communication, such as Shared Channels
Shared Channels Service
- provides ability to shared channels between one or more Mattermost cluster instances (using trusted connection)
- sharing/unsharing of channels is managed via slash commands (for now)
* Extracting html templates into a library
* Moving tests to the right place
* Fixing tests
* Addressing PR review comments
* Addressing PR review comments
* Replacing attomic with RWMutex
* Returning errors as channel for Templates watcher
* Address PR review comments
* Other small fixes
* Simplifying NewWithWatcher
* Addressing PR review comments
* Making error handling on rendering templates more robust
* Fixing tests
* Changing how we return errors
* Fixing shadow variables
* Addressing PR review comments
* Logging errors from the outside of sendNotificationEmail
* Fixing lock in shutdown
* Fixing the resource copy for commands tests temporary directories
* Removing unused import
* A couple of tiny fixes
