Plugins: Refactor env vars to dedicated service (#68960)

* add env vars service

* fix tests

* fix more tests

go.mod

@@ -121,7 +121,7 @@ require (
 	gopkg.in/mail.v2 v2.3.1
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1
-	xorm.io/builder v0.3.6 // indirect
+	xorm.io/builder v0.3.6
 	xorm.io/core v0.7.3
 	xorm.io/xorm v0.8.2
 )

pkg/plugins/backendplugin/grpcplugin/client.go

@@ -83,10 +83,20 @@ func getV2PluginSet() goplugin.PluginSet {
 
 // NewBackendPlugin creates a new backend plugin factory used for registering a backend plugin.
 func NewBackendPlugin(pluginID, executablePath string) backendplugin.PluginFactoryFunc {
+	return newBackendPlugin(pluginID, executablePath, true)
+}
+
+// NewUnmanagedBackendPlugin creates a new backend plugin factory used for registering an unmanaged backend plugin.
+func NewUnmanagedBackendPlugin(pluginID, executablePath string) backendplugin.PluginFactoryFunc {
+	return newBackendPlugin(pluginID, executablePath, false)
+}
+
+// NewBackendPlugin creates a new backend plugin factory used for registering a backend plugin.
+func newBackendPlugin(pluginID, executablePath string, managed bool) backendplugin.PluginFactoryFunc {
 	return newPlugin(PluginDescriptor{
 		pluginID:       pluginID,
 		executablePath: executablePath,
-		managed:        true,
+		managed:        managed,
 		versionedPlugins: map[int]goplugin.PluginSet{
 			grpcplugin.ProtocolVersion: getV2PluginSet(),
 		},

pkg/plugins/envvars/envvars.go

@@ -0,0 +1,132 @@
+package envvars
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+
+	"github.com/grafana/grafana-aws-sdk/pkg/awsds"
+	"github.com/grafana/grafana-azure-sdk-go/azsettings"
+	"github.com/grafana/grafana-plugin-sdk-go/backend/proxy"
+
+	"github.com/grafana/grafana/pkg/plugins"
+	"github.com/grafana/grafana/pkg/plugins/config"
+)
+
+type Provider interface {
+	Get(ctx context.Context, p *plugins.Plugin) []string
+}
+
+type Service struct {
+	cfg     *config.Cfg
+	license plugins.Licensing
+}
+
+func NewProvider(cfg *config.Cfg, license plugins.Licensing) *Service {
+	return &Service{
+		cfg:     cfg,
+		license: license,
+	}
+}
+
+func (s *Service) Get(_ context.Context, p *plugins.Plugin) []string {
+	hostEnv := []string{
+		fmt.Sprintf("GF_VERSION=%s", s.cfg.BuildVersion),
+	}
+
+	if s.license != nil {
+		hostEnv = append(
+			hostEnv,
+			fmt.Sprintf("GF_EDITION=%s", s.license.Edition()),
+			fmt.Sprintf("GF_ENTERPRISE_LICENSE_PATH=%s", s.license.Path()),
+			fmt.Sprintf("GF_ENTERPRISE_APP_URL=%s", s.license.AppURL()),
+		)
+		hostEnv = append(hostEnv, s.license.Environment()...)
+	}
+
+	hostEnv = append(hostEnv, s.awsEnvVars()...)
+	hostEnv = append(hostEnv, s.secureSocksProxyEnvVars()...)
+	hostEnv = append(hostEnv, azsettings.WriteToEnvStr(s.cfg.Azure)...)
+	hostEnv = append(hostEnv, s.tracingEnvVars(p)...)
+
+	ev := getPluginSettings(p.ID, s.cfg).asEnvVar("GF_PLUGIN", hostEnv)
+	return ev
+}
+
+func (s *Service) tracingEnvVars(plugin *plugins.Plugin) []string {
+	var pluginTracingEnabled bool
+	if v, exists := s.cfg.PluginSettings[plugin.ID]["tracing"]; exists {
+		pluginTracingEnabled = v == "true"
+	}
+	if !s.cfg.Tracing.IsEnabled() || !pluginTracingEnabled {
+		return nil
+	}
+
+	var vars []string
+	if plugin.Info.Version != "" {
+		vars = append(vars, fmt.Sprintf("GF_PLUGIN_VERSION=%s", plugin.Info.Version))
+	}
+	return append(
+		vars,
+		fmt.Sprintf("GF_INSTANCE_OTLP_ADDRESS=%s", s.cfg.Tracing.OpenTelemetry.Address),
+		fmt.Sprintf("GF_INSTANCE_OTLP_PROPAGATION=%s", s.cfg.Tracing.OpenTelemetry.Propagation),
+	)
+}
+
+func (s *Service) awsEnvVars() []string {
+	var variables []string
+	if s.cfg.AWSAssumeRoleEnabled {
+		variables = append(variables, awsds.AssumeRoleEnabledEnvVarKeyName+"=true")
+	}
+	if len(s.cfg.AWSAllowedAuthProviders) > 0 {
+		variables = append(variables, awsds.AllowedAuthProvidersEnvVarKeyName+"="+strings.Join(s.cfg.AWSAllowedAuthProviders, ","))
+	}
+
+	return variables
+}
+
+func (s *Service) secureSocksProxyEnvVars() []string {
+	var variables []string
+	if s.cfg.ProxySettings.Enabled {
+		variables = append(variables, proxy.PluginSecureSocksProxyClientCert+"="+s.cfg.ProxySettings.ClientCert)
+		variables = append(variables, proxy.PluginSecureSocksProxyClientKey+"="+s.cfg.ProxySettings.ClientKey)
+		variables = append(variables, proxy.PluginSecureSocksProxyRootCACert+"="+s.cfg.ProxySettings.RootCA)
+		variables = append(variables, proxy.PluginSecureSocksProxyProxyAddress+"="+s.cfg.ProxySettings.ProxyAddress)
+		variables = append(variables, proxy.PluginSecureSocksProxyServerName+"="+s.cfg.ProxySettings.ServerName)
+		variables = append(variables, proxy.PluginSecureSocksProxyEnabled+"="+strconv.FormatBool(s.cfg.ProxySettings.Enabled))
+	}
+
+	return variables
+}
+
+type pluginSettings map[string]string
+
+func getPluginSettings(pluginID string, cfg *config.Cfg) pluginSettings {
+	ps := pluginSettings{}
+	for k, v := range cfg.PluginSettings[pluginID] {
+		if k == "path" || strings.ToLower(k) == "id" {
+			continue
+		}
+		ps[k] = v
+	}
+
+	return ps
+}
+
+func (ps pluginSettings) asEnvVar(prefix string, hostEnv []string) []string {
+	env := make([]string, 0, len(ps))
+	for k, v := range ps {
+		key := fmt.Sprintf("%s_%s", prefix, strings.ToUpper(k))
+		if value := os.Getenv(key); value != "" {
+			v = value
+		}
+
+		env = append(env, fmt.Sprintf("%s=%s", key, v))
+	}
+
+	env = append(env, hostEnv...)
+
+	return env
+}

pkg/plugins/envvars/envvars_test.go

@@ -0,0 +1,304 @@
+package envvars
+
+import (
+	"context"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	"github.com/grafana/grafana/pkg/plugins"
+	"github.com/grafana/grafana/pkg/plugins/config"
+	"github.com/grafana/grafana/pkg/plugins/manager/fakes"
+	"github.com/grafana/grafana/pkg/setting"
+)
+
+func TestInitializer_envVars(t *testing.T) {
+	t.Run("backend datasource with license", func(t *testing.T) {
+		p := &plugins.Plugin{
+			JSONData: plugins.JSONData{
+				ID: "test",
+			},
+		}
+
+		licensing := &fakes.FakeLicensingService{
+			LicenseEdition: "test",
+			TokenRaw:       "token",
+			LicensePath:    "/path/to/ent/license",
+			LicenseAppURL:  "https://myorg.com/",
+		}
+
+		envVarsProvider := NewProvider(&config.Cfg{
+			PluginSettings: map[string]map[string]string{
+				"test": {
+					"custom_env_var": "customVal",
+				},
+			},
+		}, licensing)
+
+		envVars := envVarsProvider.Get(context.Background(), p)
+		assert.Len(t, envVars, 6)
+		assert.Equal(t, "GF_PLUGIN_CUSTOM_ENV_VAR=customVal", envVars[0])
+		assert.Equal(t, "GF_VERSION=", envVars[1])
+		assert.Equal(t, "GF_EDITION=test", envVars[2])
+		assert.Equal(t, "GF_ENTERPRISE_LICENSE_PATH=/path/to/ent/license", envVars[3])
+		assert.Equal(t, "GF_ENTERPRISE_APP_URL=https://myorg.com/", envVars[4])
+		assert.Equal(t, "GF_ENTERPRISE_LICENSE_TEXT=token", envVars[5])
+	})
+}
+
+func TestInitializer_tracingEnvironmentVariables(t *testing.T) {
+	const pluginID = "plugin_id"
+
+	defaultPlugin := &plugins.Plugin{
+		JSONData: plugins.JSONData{
+			ID:   pluginID,
+			Info: plugins.Info{Version: "1.0.0"},
+		},
+	}
+	pluginWithoutVersion := &plugins.Plugin{
+		JSONData: plugins.JSONData{ID: pluginID},
+	}
+
+	defaultOTelCfg := config.OpenTelemetryCfg{
+		Address:     "127.0.0.1:4317",
+		Propagation: "",
+	}
+
+	expDefaultOtlp := func(t *testing.T, envVars []string) {
+		found := map[string]bool{
+			"address":        false,
+			"plugin_version": false,
+			"propagation":    false,
+		}
+		setFound := func(v string) {
+			require.False(t, found[v], "duplicate env var found")
+			found[v] = true
+		}
+		for _, v := range envVars {
+			switch v {
+			case "GF_PLUGIN_VERSION=1.0.0":
+				setFound("plugin_version")
+			case "GF_INSTANCE_OTLP_ADDRESS=127.0.0.1:4317":
+				setFound("address")
+			case "GF_INSTANCE_OTLP_PROPAGATION=":
+				setFound("propagation")
+			}
+		}
+		for k, f := range found {
+			require.Truef(t, f, "%q env var not found: %+v", k, envVars)
+		}
+	}
+	expNoTracing := func(t *testing.T, envVars []string) {
+		for _, v := range envVars {
+			assert.False(t, strings.HasPrefix(v, "GF_TRACING"), "should not have tracing env var")
+			assert.False(
+				t,
+				strings.HasPrefix(v, "GF_PLUGIN_VERSION"),
+				"GF_PLUGIN_VERSION is tracing-only and should not be present when tracing is disabled",
+			)
+		}
+	}
+	expGfPluginVersionNotPresent := func(t *testing.T, envVars []string) {
+		for _, e := range envVars {
+			assert.False(t, strings.HasPrefix("GF_PLUGIN_VERSION=", e), "GF_PLUGIN_VERSION shouldn't be present")
+		}
+	}
+	expGfPluginVersionPresent := func(t *testing.T, envVars []string) {
+		var found bool
+		for _, e := range envVars {
+			if e != "GF_PLUGIN_VERSION=1.0.0" {
+				continue
+			}
+			assert.False(t, found, "GF_PLUGIN_VERSION is present multiple times")
+			found = true
+		}
+		assert.Truef(t, found, "GF_PLUGIN_VERSION is not present: %+v", envVars)
+	}
+
+	for _, tc := range []struct {
+		name   string
+		cfg    *config.Cfg
+		plugin *plugins.Plugin
+		exp    func(t *testing.T, envVars []string)
+	}{
+		{
+			name: "otel not configured",
+			cfg: &config.Cfg{
+				Tracing: config.Tracing{},
+			},
+			plugin: defaultPlugin,
+			exp:    expNoTracing,
+		},
+		{
+			name: "otel not configured but plugin-tracing enabled",
+			cfg: &config.Cfg{
+				Tracing:        config.Tracing{},
+				PluginSettings: map[string]map[string]string{pluginID: {"tracing": "true"}},
+			},
+			plugin: defaultPlugin,
+			exp:    expNoTracing,
+		},
+		{
+			name: "otlp no propagation plugin enabled",
+			cfg: &config.Cfg{
+				Tracing: config.Tracing{
+					OpenTelemetry: defaultOTelCfg,
+				},
+				PluginSettings: map[string]map[string]string{
+					pluginID: {"tracing": "true"},
+				},
+			},
+			plugin: defaultPlugin,
+			exp:    expDefaultOtlp,
+		},
+		{
+			name: "otlp no propagation disabled by default",
+			cfg: &config.Cfg{
+				Tracing: config.Tracing{
+					OpenTelemetry: defaultOTelCfg,
+				},
+			},
+			plugin: defaultPlugin,
+			exp:    expNoTracing,
+		},
+		{
+			name: "otlp propagation plugin enabled",
+			cfg: &config.Cfg{
+				Tracing: config.Tracing{
+					OpenTelemetry: config.OpenTelemetryCfg{
+						Address:     "127.0.0.1:4317",
+						Propagation: "w3c",
+					},
+				},
+				PluginSettings: map[string]map[string]string{
+					pluginID: {"tracing": "true"},
+				},
+			},
+			plugin: defaultPlugin,
+			exp: func(t *testing.T, envVars []string) {
+				assert.Len(t, envVars, 5)
+				assert.Equal(t, "GF_PLUGIN_TRACING=true", envVars[0])
+				assert.Equal(t, "GF_VERSION=", envVars[1])
+				assert.Equal(t, "GF_PLUGIN_VERSION=1.0.0", envVars[2])
+				assert.Equal(t, "GF_INSTANCE_OTLP_ADDRESS=127.0.0.1:4317", envVars[3])
+				assert.Equal(t, "GF_INSTANCE_OTLP_PROPAGATION=w3c", envVars[4])
+			},
+		},
+		{
+			name: "otlp enabled composite propagation",
+			cfg: &config.Cfg{
+				Tracing: config.Tracing{
+					OpenTelemetry: config.OpenTelemetryCfg{
+						Address:     "127.0.0.1:4317",
+						Propagation: "w3c,jaeger",
+					},
+				},
+				PluginSettings: map[string]map[string]string{
+					pluginID: {"tracing": "true"},
+				},
+			},
+			plugin: defaultPlugin,
+			exp: func(t *testing.T, envVars []string) {
+				assert.Len(t, envVars, 5)
+				assert.Equal(t, "GF_PLUGIN_TRACING=true", envVars[0])
+				assert.Equal(t, "GF_VERSION=", envVars[1])
+				assert.Equal(t, "GF_PLUGIN_VERSION=1.0.0", envVars[2])
+				assert.Equal(t, "GF_INSTANCE_OTLP_ADDRESS=127.0.0.1:4317", envVars[3])
+				assert.Equal(t, "GF_INSTANCE_OTLP_PROPAGATION=w3c,jaeger", envVars[4])
+			},
+		},
+		{
+			name: "otlp no propagation disabled by default",
+			cfg: &config.Cfg{
+				Tracing: config.Tracing{
+					OpenTelemetry: config.OpenTelemetryCfg{
+						Address:     "127.0.0.1:4317",
+						Propagation: "w3c",
+					},
+				},
+			},
+			plugin: defaultPlugin,
+			exp:    expNoTracing,
+		},
+		{
+			name: "disabled on plugin",
+			cfg: &config.Cfg{
+				Tracing: config.Tracing{
+					OpenTelemetry: defaultOTelCfg,
+				},
+				PluginSettings: setting.PluginSettings{
+					pluginID: map[string]string{"tracing": "false"},
+				},
+			},
+			plugin: defaultPlugin,
+			exp:    expNoTracing,
+		},
+		{
+			name: "disabled on plugin with other plugin settings",
+			cfg: &config.Cfg{
+				Tracing: config.Tracing{
+					OpenTelemetry: defaultOTelCfg,
+				},
+				PluginSettings: map[string]map[string]string{
+					pluginID: {"some_other_option": "true"},
+				},
+			},
+			plugin: defaultPlugin,
+			exp:    expNoTracing,
+		},
+		{
+			name: "enabled on plugin with other plugin settings",
+			cfg: &config.Cfg{
+				Tracing: config.Tracing{
+					OpenTelemetry: defaultOTelCfg,
+				},
+				PluginSettings: map[string]map[string]string{
+					pluginID: {"some_other_option": "true", "tracing": "true"},
+				},
+			},
+			plugin: defaultPlugin,
+			exp:    expDefaultOtlp,
+		},
+		{
+			name: "GF_PLUGIN_VERSION is not present if tracing is disabled",
+			cfg: &config.Cfg{
+				Tracing: config.Tracing{
+					OpenTelemetry: config.OpenTelemetryCfg{},
+				},
+				PluginSettings: map[string]map[string]string{pluginID: {"tracing": "true"}},
+			},
+			plugin: defaultPlugin,
+			exp:    expGfPluginVersionNotPresent,
+		},
+		{
+			name: "GF_PLUGIN_VERSION is present if tracing is enabled and plugin has version",
+			cfg: &config.Cfg{
+				Tracing: config.Tracing{
+					OpenTelemetry: defaultOTelCfg,
+				},
+				PluginSettings: map[string]map[string]string{pluginID: {"tracing": "true"}},
+			},
+			plugin: defaultPlugin,
+			exp:    expGfPluginVersionPresent,
+		},
+		{
+			name: "GF_PLUGIN_VERSION is not present if tracing is enabled but plugin doesn't have a version",
+			cfg: &config.Cfg{
+				Tracing: config.Tracing{
+					OpenTelemetry: config.OpenTelemetryCfg{},
+				},
+				PluginSettings: map[string]map[string]string{pluginID: {"tracing": "true"}},
+			},
+			plugin: pluginWithoutVersion,
+			exp:    expGfPluginVersionNotPresent,
+		},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			envVarsProvider := NewProvider(tc.cfg, nil)
+			envVars := envVarsProvider.Get(context.Background(), tc.plugin)
+			tc.exp(t, envVars)
+		})
+	}
+}

pkg/plugins/manager/loader/initializer/initializer.go

@@ -2,33 +2,22 @@ package initializer
 
 import (
 	"context"
-	"fmt"
-	"os"
-	"strconv"
-	"strings"
-
-	"github.com/grafana/grafana-aws-sdk/pkg/awsds"
-	"github.com/grafana/grafana-azure-sdk-go/azsettings"
-	"github.com/grafana/grafana-plugin-sdk-go/backend/proxy"
+	"errors"
 
 	"github.com/grafana/grafana/pkg/plugins"
 	"github.com/grafana/grafana/pkg/plugins/config"
-	"github.com/grafana/grafana/pkg/plugins/log"
+	"github.com/grafana/grafana/pkg/plugins/envvars"
 )
 
 type Initializer struct {
-	cfg             *config.Cfg
-	license         plugins.Licensing
+	envVarProvider  envvars.Provider
 	backendProvider plugins.BackendFactoryProvider
-	log             log.Logger
 }
 
 func New(cfg *config.Cfg, backendProvider plugins.BackendFactoryProvider, license plugins.Licensing) Initializer {
 	return Initializer{
-		cfg:             cfg,
-		license:         license,
+		envVarProvider:  envvars.NewProvider(cfg, license),
 		backendProvider: backendProvider,
-		log:             log.New("plugin.initializer"),
 	}
 }
 
@@ -36,10 +25,11 @@ func (i *Initializer) Initialize(ctx context.Context, p *plugins.Plugin) error {
 	if p.Backend {
 		backendFactory := i.backendProvider.BackendFactory(ctx, p)
 		if backendFactory == nil {
-			return fmt.Errorf("could not find backend factory for plugin")
+			return errors.New("could not find backend factory for plugin")
 		}
 
-		if backendClient, err := backendFactory(p.ID, p.Logger(), i.envVars(p)); err != nil {
+		env := i.envVarProvider.Get(ctx, p)
+		if backendClient, err := backendFactory(p.ID, p.Logger(), env); err != nil {
 			return err
 		} else {
 			p.RegisterClient(backendClient)
@@ -48,103 +38,3 @@ func (i *Initializer) Initialize(ctx context.Context, p *plugins.Plugin) error {
 
 	return nil
 }
-
-func (i *Initializer) envVars(plugin *plugins.Plugin) []string {
-	hostEnv := []string{
-		fmt.Sprintf("GF_VERSION=%s", i.cfg.BuildVersion),
-	}
-
-	if i.license != nil {
-		hostEnv = append(
-			hostEnv,
-			fmt.Sprintf("GF_EDITION=%s", i.license.Edition()),
-			fmt.Sprintf("GF_ENTERPRISE_LICENSE_PATH=%s", i.license.Path()),
-			fmt.Sprintf("GF_ENTERPRISE_APP_URL=%s", i.license.AppURL()),
-		)
-		hostEnv = append(hostEnv, i.license.Environment()...)
-	}
-
-	hostEnv = append(hostEnv, i.awsEnvVars()...)
-	hostEnv = append(hostEnv, i.secureSocksProxyEnvVars()...)
-	hostEnv = append(hostEnv, azsettings.WriteToEnvStr(i.cfg.Azure)...)
-	hostEnv = append(hostEnv, i.tracingEnvVars(plugin)...)
-
-	ev := getPluginSettings(plugin.ID, i.cfg).asEnvVar("GF_PLUGIN", hostEnv)
-	return ev
-}
-
-func (i *Initializer) tracingEnvVars(plugin *plugins.Plugin) []string {
-	var pluginTracingEnabled bool
-	if v, exists := i.cfg.PluginSettings[plugin.ID]["tracing"]; exists {
-		pluginTracingEnabled = v == "true"
-	}
-	if !i.cfg.Tracing.IsEnabled() || !pluginTracingEnabled {
-		return nil
-	}
-
-	var vars []string
-	if plugin.Info.Version != "" {
-		vars = append(vars, fmt.Sprintf("GF_PLUGIN_VERSION=%s", plugin.Info.Version))
-	}
-	return append(
-		vars,
-		fmt.Sprintf("GF_INSTANCE_OTLP_ADDRESS=%s", i.cfg.Tracing.OpenTelemetry.Address),
-		fmt.Sprintf("GF_INSTANCE_OTLP_PROPAGATION=%s", i.cfg.Tracing.OpenTelemetry.Propagation),
-	)
-}
-
-func (i *Initializer) awsEnvVars() []string {
-	var variables []string
-	if i.cfg.AWSAssumeRoleEnabled {
-		variables = append(variables, awsds.AssumeRoleEnabledEnvVarKeyName+"=true")
-	}
-	if len(i.cfg.AWSAllowedAuthProviders) > 0 {
-		variables = append(variables, awsds.AllowedAuthProvidersEnvVarKeyName+"="+strings.Join(i.cfg.AWSAllowedAuthProviders, ","))
-	}
-
-	return variables
-}
-
-func (i *Initializer) secureSocksProxyEnvVars() []string {
-	var variables []string
-	if i.cfg.ProxySettings.Enabled {
-		variables = append(variables, proxy.PluginSecureSocksProxyClientCert+"="+i.cfg.ProxySettings.ClientCert)
-		variables = append(variables, proxy.PluginSecureSocksProxyClientKey+"="+i.cfg.ProxySettings.ClientKey)
-		variables = append(variables, proxy.PluginSecureSocksProxyRootCACert+"="+i.cfg.ProxySettings.RootCA)
-		variables = append(variables, proxy.PluginSecureSocksProxyProxyAddress+"="+i.cfg.ProxySettings.ProxyAddress)
-		variables = append(variables, proxy.PluginSecureSocksProxyServerName+"="+i.cfg.ProxySettings.ServerName)
-		variables = append(variables, proxy.PluginSecureSocksProxyEnabled+"="+strconv.FormatBool(i.cfg.ProxySettings.Enabled))
-	}
-
-	return variables
-}
-
-type pluginSettings map[string]string
-
-func (ps pluginSettings) asEnvVar(prefix string, hostEnv []string) []string {
-	env := make([]string, 0, len(ps))
-	for k, v := range ps {
-		key := fmt.Sprintf("%s_%s", prefix, strings.ToUpper(k))
-		if value := os.Getenv(key); value != "" {
-			v = value
-		}
-
-		env = append(env, fmt.Sprintf("%s=%s", key, v))
-	}
-
-	env = append(env, hostEnv...)
-
-	return env
-}
-
-func getPluginSettings(pluginID string, cfg *config.Cfg) pluginSettings {
-	ps := pluginSettings{}
-	for k, v := range cfg.PluginSettings[pluginID] {
-		if k == "path" || strings.ToLower(k) == "id" {
-			continue
-		}
-		ps[k] = v
-	}
-
-	return ps
-}

pkg/plugins/manager/loader/initializer/initializer_test.go

@@ -2,18 +2,13 @@ package initializer
 
 import (
 	"context"
-	"strings"
 	"testing"
 
-	"github.com/grafana/grafana/pkg/setting"
 	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
 
 	"github.com/grafana/grafana/pkg/plugins"
 	"github.com/grafana/grafana/pkg/plugins/backendplugin"
-	"github.com/grafana/grafana/pkg/plugins/config"
 	"github.com/grafana/grafana/pkg/plugins/log"
-	"github.com/grafana/grafana/pkg/plugins/manager/fakes"
 )
 
 func TestInitializer_Initialize(t *testing.T) {
@@ -34,11 +29,10 @@ func TestInitializer_Initialize(t *testing.T) {
 		}
 
 		i := &Initializer{
-			cfg: &config.Cfg{},
-			log: log.NewTestLogger(),
 			backendProvider: &fakeBackendProvider{
 				plugin: p,
 			},
+			envVarProvider: &fakeEnvVarsProvider{},
 		}
 
 		err := i.Initialize(context.Background(), p)
@@ -63,11 +57,10 @@ func TestInitializer_Initialize(t *testing.T) {
 		}
 
 		i := &Initializer{
-			cfg: &config.Cfg{},
-			log: log.NewTestLogger(),
 			backendProvider: &fakeBackendProvider{
 				plugin: p,
 			},
+			envVarProvider: &fakeEnvVarsProvider{},
 		}
 
 		err := i.Initialize(context.Background(), p)
@@ -92,11 +85,10 @@ func TestInitializer_Initialize(t *testing.T) {
 		}
 
 		i := &Initializer{
-			cfg: &config.Cfg{},
-			log: log.NewTestLogger(),
 			backendProvider: &fakeBackendProvider{
 				plugin: p,
 			},
+			envVarProvider: &fakeEnvVarsProvider{},
 		}
 
 		err := i.Initialize(context.Background(), p)
@@ -115,11 +107,10 @@ func TestInitializer_Initialize(t *testing.T) {
 		}
 
 		i := &Initializer{
-			cfg: &config.Cfg{},
-			log: log.NewTestLogger(),
 			backendProvider: &fakeBackendProvider{
 				plugin: p,
 			},
+			envVarProvider: &fakeEnvVarsProvider{},
 		}
 
 		err := i.Initialize(context.Background(), p)
@@ -131,333 +122,6 @@ func TestInitializer_Initialize(t *testing.T) {
 	})
 }
 
-func TestInitializer_envVars(t *testing.T) {
-	t.Run("backend datasource with license", func(t *testing.T) {
-		p := &plugins.Plugin{
-			JSONData: plugins.JSONData{
-				ID: "test",
-			},
-		}
-
-		licensing := &fakes.FakeLicensingService{
-			LicenseEdition: "test",
-			TokenRaw:       "token",
-			LicensePath:    "/path/to/ent/license",
-			LicenseAppURL:  "https://myorg.com/",
-		}
-
-		i := &Initializer{
-			cfg: &config.Cfg{
-				PluginSettings: map[string]map[string]string{
-					"test": {
-						"custom_env_var": "customVal",
-					},
-				},
-			},
-			license: licensing,
-			log:     log.NewTestLogger(),
-			backendProvider: &fakeBackendProvider{
-				plugin: p,
-			},
-		}
-
-		envVars := i.envVars(p)
-		assert.Len(t, envVars, 6)
-		assert.Equal(t, "GF_PLUGIN_CUSTOM_ENV_VAR=customVal", envVars[0])
-		assert.Equal(t, "GF_VERSION=", envVars[1])
-		assert.Equal(t, "GF_EDITION=test", envVars[2])
-		assert.Equal(t, "GF_ENTERPRISE_LICENSE_PATH=/path/to/ent/license", envVars[3])
-		assert.Equal(t, "GF_ENTERPRISE_APP_URL=https://myorg.com/", envVars[4])
-		assert.Equal(t, "GF_ENTERPRISE_LICENSE_TEXT=token", envVars[5])
-	})
-}
-
-func TestInitializer_tracingEnvironmentVariables(t *testing.T) {
-	const pluginID = "plugin_id"
-
-	defaultPlugin := &plugins.Plugin{
-		JSONData: plugins.JSONData{
-			ID:   pluginID,
-			Info: plugins.Info{Version: "1.0.0"},
-		},
-	}
-	pluginWithoutVersion := &plugins.Plugin{
-		JSONData: plugins.JSONData{ID: pluginID},
-	}
-
-	defaultOTelCfg := config.OpenTelemetryCfg{
-		Address:     "127.0.0.1:4317",
-		Propagation: "",
-	}
-
-	expDefaultOtlp := func(t *testing.T, envVars []string) {
-		found := map[string]bool{
-			"address":        false,
-			"plugin_version": false,
-			"propagation":    false,
-		}
-		setFound := func(v string) {
-			require.False(t, found[v], "duplicate env var found")
-			found[v] = true
-		}
-		for _, v := range envVars {
-			switch v {
-			case "GF_PLUGIN_VERSION=1.0.0":
-				setFound("plugin_version")
-			case "GF_INSTANCE_OTLP_ADDRESS=127.0.0.1:4317":
-				setFound("address")
-			case "GF_INSTANCE_OTLP_PROPAGATION=":
-				setFound("propagation")
-			}
-		}
-		for k, f := range found {
-			require.Truef(t, f, "%q env var not found: %+v", k, envVars)
-		}
-	}
-	expNoTracing := func(t *testing.T, envVars []string) {
-		for _, v := range envVars {
-			assert.False(t, strings.HasPrefix(v, "GF_TRACING"), "should not have tracing env var")
-			assert.False(
-				t,
-				strings.HasPrefix(v, "GF_PLUGIN_VERSION"),
-				"GF_PLUGIN_VERSION is tracing-only and should not be present when tracing is disabled",
-			)
-		}
-	}
-	expGfPluginVersionNotPresent := func(t *testing.T, envVars []string) {
-		for _, e := range envVars {
-			assert.False(t, strings.HasPrefix("GF_PLUGIN_VERSION=", e), "GF_PLUGIN_VERSION shouldn't be present")
-		}
-	}
-	expGfPluginVersionPresent := func(t *testing.T, envVars []string) {
-		var found bool
-		for _, e := range envVars {
-			if e != "GF_PLUGIN_VERSION=1.0.0" {
-				continue
-			}
-			assert.False(t, found, "GF_PLUGIN_VERSION is present multiple times")
-			found = true
-		}
-		assert.Truef(t, found, "GF_PLUGIN_VERSION is not present: %+v", envVars)
-	}
-
-	for _, tc := range []struct {
-		name   string
-		cfg    *config.Cfg
-		plugin *plugins.Plugin
-		exp    func(t *testing.T, envVars []string)
-	}{
-		{
-			name: "otel not configured",
-			cfg: &config.Cfg{
-				Tracing: config.Tracing{},
-			},
-			plugin: defaultPlugin,
-			exp:    expNoTracing,
-		},
-		{
-			name: "otel not configured but plugin-tracing enabled",
-			cfg: &config.Cfg{
-				Tracing:        config.Tracing{},
-				PluginSettings: map[string]map[string]string{pluginID: {"tracing": "true"}},
-			},
-			plugin: defaultPlugin,
-			exp:    expNoTracing,
-		},
-		{
-			name: "otlp no propagation plugin enabled",
-			cfg: &config.Cfg{
-				Tracing: config.Tracing{
-					OpenTelemetry: defaultOTelCfg,
-				},
-				PluginSettings: map[string]map[string]string{
-					pluginID: {"tracing": "true"},
-				},
-			},
-			plugin: defaultPlugin,
-			exp:    expDefaultOtlp,
-		},
-		{
-			name: "otlp no propagation disabled by default",
-			cfg: &config.Cfg{
-				Tracing: config.Tracing{
-					OpenTelemetry: defaultOTelCfg,
-				},
-			},
-			plugin: defaultPlugin,
-			exp:    expNoTracing,
-		},
-		{
-			name: "otlp propagation plugin enabled",
-			cfg: &config.Cfg{
-				Tracing: config.Tracing{
-					OpenTelemetry: config.OpenTelemetryCfg{
-						Address:     "127.0.0.1:4317",
-						Propagation: "w3c",
-					},
-				},
-				PluginSettings: map[string]map[string]string{
-					pluginID: {"tracing": "true"},
-				},
-			},
-			plugin: defaultPlugin,
-			exp: func(t *testing.T, envVars []string) {
-				assert.Len(t, envVars, 5)
-				assert.Equal(t, "GF_PLUGIN_TRACING=true", envVars[0])
-				assert.Equal(t, "GF_VERSION=", envVars[1])
-				assert.Equal(t, "GF_PLUGIN_VERSION=1.0.0", envVars[2])
-				assert.Equal(t, "GF_INSTANCE_OTLP_ADDRESS=127.0.0.1:4317", envVars[3])
-				assert.Equal(t, "GF_INSTANCE_OTLP_PROPAGATION=w3c", envVars[4])
-			},
-		},
-		{
-			name: "otlp enabled composite propagation",
-			cfg: &config.Cfg{
-				Tracing: config.Tracing{
-					OpenTelemetry: config.OpenTelemetryCfg{
-						Address:     "127.0.0.1:4317",
-						Propagation: "w3c,jaeger",
-					},
-				},
-				PluginSettings: map[string]map[string]string{
-					pluginID: {"tracing": "true"},
-				},
-			},
-			plugin: defaultPlugin,
-			exp: func(t *testing.T, envVars []string) {
-				assert.Len(t, envVars, 5)
-				assert.Equal(t, "GF_PLUGIN_TRACING=true", envVars[0])
-				assert.Equal(t, "GF_VERSION=", envVars[1])
-				assert.Equal(t, "GF_PLUGIN_VERSION=1.0.0", envVars[2])
-				assert.Equal(t, "GF_INSTANCE_OTLP_ADDRESS=127.0.0.1:4317", envVars[3])
-				assert.Equal(t, "GF_INSTANCE_OTLP_PROPAGATION=w3c,jaeger", envVars[4])
-			},
-		},
-		{
-			name: "otlp no propagation disabled by default",
-			cfg: &config.Cfg{
-				Tracing: config.Tracing{
-					OpenTelemetry: config.OpenTelemetryCfg{
-						Address:     "127.0.0.1:4317",
-						Propagation: "w3c",
-					},
-				},
-			},
-			plugin: defaultPlugin,
-			exp:    expNoTracing,
-		},
-		{
-			name: "disabled on plugin",
-			cfg: &config.Cfg{
-				Tracing: config.Tracing{
-					OpenTelemetry: defaultOTelCfg,
-				},
-				PluginSettings: setting.PluginSettings{
-					pluginID: map[string]string{"tracing": "false"},
-				},
-			},
-			plugin: defaultPlugin,
-			exp:    expNoTracing,
-		},
-		{
-			name: "disabled on plugin with other plugin settings",
-			cfg: &config.Cfg{
-				Tracing: config.Tracing{
-					OpenTelemetry: defaultOTelCfg,
-				},
-				PluginSettings: map[string]map[string]string{
-					pluginID: {"some_other_option": "true"},
-				},
-			},
-			plugin: defaultPlugin,
-			exp:    expNoTracing,
-		},
-		{
-			name: "enabled on plugin with other plugin settings",
-			cfg: &config.Cfg{
-				Tracing: config.Tracing{
-					OpenTelemetry: defaultOTelCfg,
-				},
-				PluginSettings: map[string]map[string]string{
-					pluginID: {"some_other_option": "true", "tracing": "true"},
-				},
-			},
-			plugin: defaultPlugin,
-			exp:    expDefaultOtlp,
-		},
-		{
-			name: "GF_PLUGIN_VERSION is not present if tracing is disabled",
-			cfg: &config.Cfg{
-				Tracing: config.Tracing{
-					OpenTelemetry: config.OpenTelemetryCfg{},
-				},
-				PluginSettings: map[string]map[string]string{pluginID: {"tracing": "true"}},
-			},
-			plugin: defaultPlugin,
-			exp:    expGfPluginVersionNotPresent,
-		},
-		{
-			name: "GF_PLUGIN_VERSION is present if tracing is enabled and plugin has version",
-			cfg: &config.Cfg{
-				Tracing: config.Tracing{
-					OpenTelemetry: defaultOTelCfg,
-				},
-				PluginSettings: map[string]map[string]string{pluginID: {"tracing": "true"}},
-			},
-			plugin: defaultPlugin,
-			exp:    expGfPluginVersionPresent,
-		},
-		{
-			name: "GF_PLUGIN_VERSION is not present if tracing is enabled but plugin doesn't have a version",
-			cfg: &config.Cfg{
-				Tracing: config.Tracing{
-					OpenTelemetry: config.OpenTelemetryCfg{},
-				},
-				PluginSettings: map[string]map[string]string{pluginID: {"tracing": "true"}},
-			},
-			plugin: pluginWithoutVersion,
-			exp:    expGfPluginVersionNotPresent,
-		},
-	} {
-		t.Run(tc.name, func(t *testing.T) {
-			i := &Initializer{
-				cfg: tc.cfg,
-				log: log.NewTestLogger(),
-			}
-			envVars := i.envVars(tc.plugin)
-			tc.exp(t, envVars)
-		})
-	}
-}
-
-func TestInitializer_getAWSEnvironmentVariables(t *testing.T) {
-
-}
-
-func TestInitializer_handleModuleDefaults(t *testing.T) {
-
-}
-
-func Test_defaultLogoPath(t *testing.T) {
-
-}
-
-func Test_evalRelativePluginUrlPath(t *testing.T) {
-
-}
-
-func Test_getPluginLogoUrl(t *testing.T) {
-
-}
-
-func Test_getPluginSettings(t *testing.T) {
-
-}
-
-func Test_pluginSettings_ToEnv(t *testing.T) {
-
-}
-
 type fakeBackendProvider struct {
 	plugins.BackendFactoryProvider
 
@@ -469,3 +133,14 @@ func (f *fakeBackendProvider) BackendFactory(_ context.Context, _ *plugins.Plugi
 		return f.plugin, nil
 	}
 }
+
+type fakeEnvVarsProvider struct {
+	GetFunc func(ctx context.Context, p *plugins.Plugin) []string
+}
+
+func (f *fakeEnvVarsProvider) Get(ctx context.Context, p *plugins.Plugin) []string {
+	if f.GetFunc != nil {
+		return f.GetFunc(ctx, p)
+	}
+	return nil
+}