* Return errors from data parsing
* Better error handling
* Fix the tests
* When there is no frame add empty frame to get metadata attached to it
* Fix tests
* Update testdata
Adding support for backend plugin client middlewares. This allows headers in outgoing
backend plugin and HTTP requests to be modified using client middlewares.
The following client middlewares added:
Forward cookies: Will forward incoming HTTP request Cookies to outgoing plugins.Client
and HTTP requests if the datasource has enabled forwarding of cookies (keepCookies).
Forward OAuth token: Will set OAuth token headers on outgoing plugins.Client and HTTP
requests if the datasource has enabled Forward OAuth Identity (oauthPassThru).
Clear auth headers: Will clear any outgoing HTTP headers that was part of the incoming
HTTP request and used when authenticating to Grafana.
The current suggested way to register client middlewares is to have a separate package,
pluginsintegration, responsible for bootstrap/instantiate the backend plugin client with
middlewares and/or longer term bootstrap/instantiate plugin management.
Fixes#54135
Related to #47734
Related to #57870
Related to #41623
Related to #57065
* Introduce a new feature flag for prometheus buffered client
* Use querydata client as default and put buffered client behind the feature flag
* Remove prometheusStreamingJSONParser feature flag as it is not needed anymore
* Update tests
* Fix unit tests
* Update feature flag description
* clean up and document integration test convention
* clarify integration test conventions
* clean up integration tests that don't follow convention
* mark testIntegration* functions as helpers to avoid confusion
Removes various custom headers logic sprinkled around in the backend.
It should automatically be applied to outgoing HTTP requests via the
CustomHeadersMiddleware.
This also removes decryption of SecureJSONData to populate custom
headers in ngalert which seemed to have caused a ton of CPU usage.
