Plugins: Remove pkg/infra/fs, pkg/infra/tracing and pkg/infra/process dependencies from pkg/plugins (#115798)

* remove dependency on packages

* update tests

* trigger

pkg/services/pluginsintegration/pluginsources/pluginsources.go

@@ -0,0 +1,78 @@
+package pluginsources
+
+import (
+	"context"
+	"path/filepath"
+
+	"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/manager/sources"
+	"github.com/grafana/grafana/pkg/setting"
+)
+
+type Service struct {
+	cfg            *config.PluginManagementCfg
+	staticRootPath string
+
+	log log.Logger
+}
+
+func ProvideService(cfg *setting.Cfg, pCcfg *config.PluginManagementCfg) *Service {
+	return &Service{
+		cfg:            pCcfg,
+		staticRootPath: cfg.StaticRootPath,
+		log:            log.New("plugin.sources"),
+	}
+}
+
+func (s *Service) List(_ context.Context) []plugins.PluginSource {
+	r := []plugins.PluginSource{
+		sources.NewLocalSource(
+			plugins.ClassCore,
+			s.corePluginPaths(),
+		),
+	}
+	r = append(r, s.externalPluginSources()...)
+	r = append(r, s.pluginSettingSources()...)
+	return r
+}
+
+func (s *Service) externalPluginSources() []plugins.PluginSource {
+	localSrcs, err := sources.DirAsLocalSources(s.cfg, s.cfg.PluginsPath, plugins.ClassExternal)
+	if err != nil {
+		s.log.Error("Failed to load external plugins", "error", err)
+		return []plugins.PluginSource{}
+	}
+
+	srcs := make([]plugins.PluginSource, len(localSrcs))
+	for i, src := range localSrcs {
+		srcs[i] = src
+	}
+
+	return srcs
+}
+
+func (s *Service) pluginSettingSources() []plugins.PluginSource {
+	srcs := make([]plugins.PluginSource, 0, len(s.cfg.PluginSettings))
+	for _, ps := range s.cfg.PluginSettings {
+		path, exists := ps["path"]
+		if !exists || path == "" {
+			continue
+		}
+		if s.cfg.DevMode {
+			srcs = append(srcs, sources.NewUnsafeLocalSource(plugins.ClassExternal, []string{path}))
+		} else {
+			srcs = append(srcs, sources.NewLocalSource(plugins.ClassExternal, []string{path}))
+		}
+	}
+
+	return srcs
+}
+
+// corePluginPaths provides a list of the Core plugin file system paths
+func (s *Service) corePluginPaths() []string {
+	datasourcePaths := filepath.Join(s.staticRootPath, "app", "plugins", "datasource")
+	panelsPath := filepath.Join(s.staticRootPath, "app", "plugins", "panel")
+	return []string{datasourcePaths, panelsPath}
+}