Hello Guys,
We want 2 kong plugins to perform following tasks.
- Read the query params and pass it as Headers in the request.
- Based on new headers it should redirect the traffic to api endpoint.
First Plugin:
curl https://prod-in2.abc.com/?region=us
The plugin should pass query params as headers.(region=us)
To perform the above task we already have request-transformer plugin.
Second Plugin:
Read the header (region=us) and redirect the request.
if header has (region=us) then redirect https://prod-us2.abc.com
there are 2 plugins who can do this route-by-header/set-target-host plugins.
Now, my question is how will I assemble these 2 plugins in the same ingress and execute in orders?
If anyone has better solution then that would be great.
Plugin order is determined by two factors:
The plugin priority determines which order a plugin runs in during a phase. A phase is part of request handling, e.g. access for routing the request and body_filter for reading and forwarding the request body. A plugin defines functions to run in one or more phases.
For example, assume you have pluginA with priority 200 and functions for access and body_filter, and pluginB with priority 100 and only an access function. The complete execution order is then:
pluginA:access
pluginB:access
pluginA:body_filter
For your case, all plugins execute only in the access phase. The two plugins that make routing decisions have higher priorities than request-transformer, so the new headers added by request-transformer would not be available to the routing plugins. To work around that, you’d likely want to duplicate request-transformer into a custom plugin with a priority higher than the others (priority higher than 2000), or write your own custom plugin with higher priority.