Refactor loop registry

core/services/chainlink/relayer_factory.go

@@ -127,15 +127,12 @@ func (r *RelayerFactory) NewSolana(ks keystore.Solana, chainCfgs solana.TOMLConf
 				return nil, fmt.Errorf("failed to marshal Solana configs: %w", err)
 			}
 
-			solCmdFn, err := plugins.NewCmdFactory(r.Register, plugins.CmdConfig{
-				ID:  relayID.Name(),
-				Cmd: cmdName,
-			})
+			rl, err := r.Register(relayID.Name(), cmdName)
 			if err != nil {
 				return nil, fmt.Errorf("failed to create Solana LOOP command: %w", err)
 			}
 
-			solanaRelayers[relayID] = loop.NewRelayerService(lggr, r.GRPCOpts, solCmdFn, string(cfgTOML), signer)
+			solanaRelayers[relayID] = loop.NewRelayerService(lggr, r.GRPCOpts, rl.Cmd, string(cfgTOML), signer)
 
 		} else {
 			// fallback to embedded chain
@@ -196,16 +193,13 @@ func (r *RelayerFactory) NewStarkNet(ks keystore.StarkNet, chainCfgs config.TOML
 				return nil, fmt.Errorf("failed to marshal StarkNet configs: %w", err)
 			}
 
-			starknetCmdFn, err := plugins.NewCmdFactory(r.Register, plugins.CmdConfig{
-				ID:  relayID.Name(),
-				Cmd: cmdName,
-			})
+			rl, err := r.Register(relayID.Name(), cmdName)
 			if err != nil {
 				return nil, fmt.Errorf("failed to create StarkNet LOOP command: %w", err)
 			}
 			// the starknet relayer service has a delicate keystore dependency. the value that is passed to NewRelayerService must
 			// be compatible with instantiating a starknet transaction manager KeystoreAdapter within the LOOPp executable.
-			starknetRelayers[relayID] = loop.NewRelayerService(lggr, r.GRPCOpts, starknetCmdFn, string(cfgTOML), loopKs)
+			starknetRelayers[relayID] = loop.NewRelayerService(lggr, r.GRPCOpts, rl.Cmd, string(cfgTOML), loopKs)
 		} else {
 			// fallback to embedded chain
 			opts := starkchain.ChainOpts{

core/services/job/spawner_test.go

@@ -300,7 +300,7 @@ func TestSpawner_CreateJobDeleteJob(t *testing.T) {
 		orm := NewTestORM(t, db, pipeline.NewORM(db, lggr, config.Database(), config.JobPipeline().MaxSuccessfulRuns()), bridges.NewORM(db, lggr, config.Database()), keyStore, config.Database())
 		mailMon := servicetest.Run(t, mailboxtest.NewMonitor(t))
 
-		processConfig := plugins.NewRegistrarConfig(loop.GRPCOpts{}, func(name string) (*plugins.RegisteredLoop, error) { return nil, nil })
+		processConfig := plugins.NewRegistrarConfig(loop.GRPCOpts{}, func(name, cmd string) (*plugins.RegisteredLoop, error) { return nil, nil })
 		ocr2DelegateConfig := ocr2.NewDelegateConfig(config.OCR2(), config.Mercury(), config.Threshold(), config.Insecure(), config.JobPipeline(), config.Database(), processConfig)
 
 		d := ocr2.NewDelegate(nil, orm, nil, nil, nil, nil, monitoringEndpoint, legacyChains, lggr, ocr2DelegateConfig,

core/services/ocr2/delegate.go

@@ -588,7 +588,7 @@ func (d *Delegate) newServicesGenericPlugin(
 	}
 
 	pluginLggr := lggr.Named(p.PluginName).Named(spec.ContractID).Named(spec.GetID())
-	cmdFn, grpcOpts, err := d.cfg.RegisterLOOP(fmt.Sprintf("%s-%s-%s", p.PluginName, spec.ContractID, spec.GetID()), command)
+	loop, err := d.cfg.RegisterLOOP(fmt.Sprintf("%s-%s-%s", p.PluginName, spec.ContractID, spec.GetID()), command)
 	if err != nil {
 		return nil, fmt.Errorf("failed to register loop: %w", err)
 	}
@@ -632,7 +632,7 @@ func (d *Delegate) newServicesGenericPlugin(
 	pr := generic.NewPipelineRunnerAdapter(pluginLggr, jb, d.pipelineRunner)
 	ta := generic.NewTelemetryAdapter(d.monitoringEndpointGen)
 
-	plugin := reportingplugins.NewLOOPPService(pluginLggr, grpcOpts, cmdFn, pluginConfig, providerClientConn, pr, ta, errorLog)
+	plugin := reportingplugins.NewLOOPPService(pluginLggr, d.cfg.GRPCOpts(), loop.Cmd, pluginConfig, providerClientConn, pr, ta, errorLog)
 	oracleArgs.ReportingPluginFactory = plugin
 	srvs = append(srvs, plugin)
 

core/services/ocr2/plugins/median/services.go

@@ -162,13 +162,13 @@ func NewMedianServices(ctx context.Context,
 	if medianLoopEnabled {
 		// use unique logger names so we can use it to register a loop
 		medianLggr := lggr.Named("Median").Named(spec.ContractID).Named(spec.GetID())
-		cmdFn, telem, err2 := cfg.RegisterLOOP(medianLggr.Name(), medianPluginCmd)
+		loopp, err2 := cfg.RegisterLOOP(medianLggr.Name(), medianPluginCmd)
 		if err2 != nil {
 			err = fmt.Errorf("failed to register loop: %w", err2)
 			abort()
 			return
 		}
-		median := loop.NewMedianService(lggr, telem, cmdFn, medianProvider, dataSource, juelsPerFeeCoinSource, errorLog)
+		median := loop.NewMedianService(lggr, cfg.GRPCOpts(), loopp.Cmd, medianProvider, dataSource, juelsPerFeeCoinSource, errorLog)
 		argsNoPlugin.ReportingPluginFactory = median
 		srvs = append(srvs, median)
 	} else {

core/web/loop_registry_test.go

@@ -76,15 +76,15 @@ func TestLoopRegistry(t *testing.T) {
 
 	// note we expect this to be an ordered result
 	expectedLabels := []model.LabelSet{
-		model.LabelSet{"__metrics_path__": model.LabelValue(expectedCoreEndPoint)},
-		model.LabelSet{"__metrics_path__": model.LabelValue(expectedLooppEndPoint)},
+		{"__metrics_path__": model.LabelValue(expectedCoreEndPoint)},
+		{"__metrics_path__": model.LabelValue(expectedLooppEndPoint)},
 	}
 
 	require.NoError(t, app.KeyStore.OCR().Add(cltest.DefaultOCRKey))
 	require.NoError(t, app.Start(testutils.Context(t)))
 
 	// register a mock loop
-	loop, err := app.GetLoopRegistry().Register("mockLoopImpl")
+	loop, err := app.GetLoopRegistry().Register("mockLoopImpl", "NOOP-COMMAND")
 	require.NoError(t, err)
 	require.NotNil(t, loop)
 	require.Len(t, app.GetLoopRegistry().List(), 1)

plugins/config.go

@@ -1,39 +1,35 @@
 package plugins
 
 import (
-	"os/exec"
-
 	"github.com/smartcontractkit/chainlink-common/pkg/loop"
 )
 
 // RegistrarConfig generates contains static configuration inher
 type RegistrarConfig interface {
-	RegisterLOOP(loopId string, cmdName string) (func() *exec.Cmd, loop.GRPCOpts, error)
+	RegisterLOOP(loopId string, cmdName string) (*RegisteredLoop, error)
+	GRPCOpts() loop.GRPCOpts
 }
 
-type registarConfig struct {
+type registrarConfig struct {
 	grpcOpts           loop.GRPCOpts
-	loopRegistrationFn func(loopId string) (*RegisteredLoop, error)
+	loopRegistrationFn func(id, cmd string) (*RegisteredLoop, error)
 }
 
 // NewRegistrarConfig creates a RegistarConfig
 // loopRegistrationFn must act as a global registry function of LOOPs and must be idempotent.
 // The [func() *exec.Cmd] for a LOOP should be generated by calling [RegistrarConfig.RegisterLOOP]
-func NewRegistrarConfig(grpcOpts loop.GRPCOpts, loopRegistrationFn func(loopId string) (*RegisteredLoop, error)) RegistrarConfig {
-	return &registarConfig{
+func NewRegistrarConfig(grpcOpts loop.GRPCOpts, loopRegistrationFn func(id, cmd string) (*RegisteredLoop, error)) RegistrarConfig {
+	return &registrarConfig{
 		grpcOpts:           grpcOpts,
 		loopRegistrationFn: loopRegistrationFn,
 	}
 }
 
 // RegisterLOOP calls the configured loopRegistrationFn. The loopRegistrationFn must act as a global registry for LOOPs and must be idempotent.
-func (pc *registarConfig) RegisterLOOP(loopID string, cmdName string) (func() *exec.Cmd, loop.GRPCOpts, error) {
-	cmdFn, err := NewCmdFactory(pc.loopRegistrationFn, CmdConfig{
-		ID:  loopID,
-		Cmd: cmdName,
-	})
-	if err != nil {
-		return nil, loop.GRPCOpts{}, err
-	}
-	return cmdFn, pc.grpcOpts, nil
+func (pc *registrarConfig) RegisterLOOP(id, cmd string) (*RegisteredLoop, error) {
+	return pc.loopRegistrationFn(id, cmd)
+}
+
+func (pc *registrarConfig) GRPCOpts() loop.GRPCOpts {
+	return pc.grpcOpts
 }

plugins/loop_registry.go

@@ -2,6 +2,7 @@ package plugins
 
 import (
 	"errors"
+	"os/exec"
 	"sort"
 	"sync"
 
@@ -20,6 +21,13 @@ var ErrExists = errors.New("plugin already registered")
 type RegisteredLoop struct {
 	Name   string
 	EnvCfg loop.EnvConfig
+	cmd    string
+}
+
+func (r *RegisteredLoop) Cmd() *exec.Cmd {
+	cmd := exec.Command(r.cmd) //#nosec G204 -- we control the value of the cmd so the lint/sec error is a false positive
+	cmd.Env = append(cmd.Env, r.EnvCfg.AsCmdEnv()...)
+	return cmd
 }
 
 // LoopRegistry is responsible for assigning ports to plugins that are to be used for the
@@ -42,7 +50,7 @@ func NewLoopRegistry(lggr logger.Logger, tracingConfig config.Tracing) *LoopRegi
 
 // Register creates a port of the plugin. It is not idempotent. Duplicate calls to Register will return [ErrExists]
 // Safe for concurrent use.
-func (m *LoopRegistry) Register(id string) (*RegisteredLoop, error) {
+func (m *LoopRegistry) Register(id string, cmd string) (*RegisteredLoop, error) {
 	m.mu.Lock()
 	defer m.mu.Unlock()
 
@@ -60,7 +68,7 @@ func (m *LoopRegistry) Register(id string) (*RegisteredLoop, error) {
 		envCfg.TracingAttributes = m.cfgTracing.Attributes()
 	}
 
-	m.registry[id] = &RegisteredLoop{Name: id, EnvCfg: envCfg}
+	m.registry[id] = &RegisteredLoop{Name: id, EnvCfg: envCfg, cmd: cmd}
 	m.lggr.Debugf("Registered loopp %q with config %v, port %d", id, envCfg, envCfg.PrometheusPort)
 	return m.registry[id], nil
 }

plugins/loop_registry_test.go

@@ -11,16 +11,16 @@ import (
 func TestPluginPortManager(t *testing.T) {
 	// register one
 	m := NewLoopRegistry(logger.TestLogger(t), nil)
-	pFoo, err := m.Register("foo")
+	pFoo, err := m.Register("foo", "./COMMAND")
 	require.NoError(t, err)
 	require.Equal(t, "foo", pFoo.Name)
 	require.Greater(t, pFoo.EnvCfg.PrometheusPort, 0)
 	// test duplicate
-	pNil, err := m.Register("foo")
+	pNil, err := m.Register("foo", "./COMMAND")
 	require.ErrorIs(t, err, ErrExists)
 	require.Nil(t, pNil)
 	// ensure increasing port assignment
-	pBar, err := m.Register("bar")
+	pBar, err := m.Register("bar", "./COMMAND")
 	require.NoError(t, err)
 	require.Equal(t, "bar", pBar.Name)
 	require.Equal(t, pFoo.EnvCfg.PrometheusPort+1, pBar.EnvCfg.PrometheusPort)
@@ -51,7 +51,7 @@ func TestLoopRegistry_Register(t *testing.T) {
 	}
 
 	// Test case 1: Register new loop
-	registeredLoop, err := loopRegistry.Register("testID")
+	registeredLoop, err := loopRegistry.Register("testID", "./COMMAND")
 	require.Nil(t, err)
 	require.Equal(t, "testID", registeredLoop.Name)
 	require.True(t, registeredLoop.EnvCfg.TracingEnabled)