Add bra config for fire datasource grafana/phlare#139

Add bra config for fire datasource

Author: aocenas

grafana/README.md

@@ -1,11 +1,12 @@
 This directory contains Fire datasource and the FlameGraph panel. 
 
-To be able to test both in Grafana you have to setup your environment in a specific way.
+To be able to test both in Grafana you have to set up your environment in a specific way.
 
 #### Setup Grafana
 - Checkout https://github.com/grafana/grafana/pull/52057 in Grafana repo.
 - In grafana repo packages/grafana-data/package.json, change `"@grafana/schema": "9.1.0-pre",` to `"@grafana/schema": "9.0.4",`. We will link @grafana/data later on and the `9.1.0-pre` version would not be recognized from Fire repo 
 #### Create symbolic links:
+Create a links in your Grafana plugin directory so Grafana will lead the plugins on startup.
 - `cd $GRAFANA_REPO/data/plugins`
 - `ln -s $FIRE_REPO/grafana/flamegraph`
 - `ln -s $FIRE_REPO/grafana/fire-datasource`
@@ -14,9 +15,9 @@ To be able to test both in Grafana you have to setup your environment in a speci
 - `cd $FIRE_REPO/grafana/flamegraph`
 - `yarn link grafana/packages/grafana-data` this will change the `resolutions` part in package.json TODO: check if this can be relative path or how to prevent rewriting this all the time.
 - `yarn install`
-- `yarn build`
+- `yarn build` or `yarn watch`
 - `cd $FIRE_REPO/grafana/fire-datasource`
 - `yarn install`
-- `yarn build`
-- `mage -v`
-- Restart Grafana if it was already running to pick up new plugin state.
+- `yarn build` or `yarn watch`
+- `mage -v` or `bra run`
+- `bra run` will also reload the plugin in your running grafana instance, if you don't use it restart Grafana if it was already running to pick up new plugin state.

grafana/fire-datasource/.bra.toml

@@ -0,0 +1,18 @@
+[run]
+init_cmds = [
+  ["mage", "-v", "build:debug"],
+  ["mage", "-v", "reloadPlugin"]
+]
+watch_all = true
+follow_symlinks = true
+watch_dirs = [
+  "$WORKDIR/pkg",
+]
+# Not sure why but this file is created and deleted, which otherwise trigger a loop
+ignore_files = ["mage_output_file.go"]
+watch_exts = [".go"]
+build_delay = 1500
+cmds = [
+  ["mage", "-v", "build:debug"],
+  ["mage", "-v", "reloadPlugin"]
+]

grafana/fire-datasource/Magefile.go

@@ -4,15 +4,9 @@
 package main
 
 import (
-	"fmt"
 	// mage:import
 	build "github.com/grafana/grafana-plugin-sdk-go/build"
 )
 
-// Hello prints a message (shows that you can define custom Mage targets).
-func Hello() {
-	fmt.Println("hello plugin developer!")
-}
-
 // Default configures the default target.
 var Default = build.BuildAll