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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,223 @@ | ||
| // Copyright (c) Abstract Machines | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
|
|
||
| // Package main contains rule engine main function to start the service. | ||
| package main | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "log" | ||
| "log/slog" | ||
| "net/url" | ||
| "os" | ||
| "time" | ||
|
|
||
| chclient "github.com/absmach/callhome/pkg/client" | ||
| "github.com/absmach/magistrala" | ||
| redisclient "github.com/absmach/magistrala/internal/clients/redis" | ||
| mglog "github.com/absmach/magistrala/logger" | ||
| mgauthz "github.com/absmach/magistrala/pkg/authz" | ||
| "github.com/absmach/magistrala/pkg/grpcclient" | ||
| jaegerclient "github.com/absmach/magistrala/pkg/jaeger" | ||
| "github.com/absmach/magistrala/pkg/policies" | ||
| "github.com/absmach/magistrala/pkg/policies/spicedb" | ||
| "github.com/absmach/magistrala/pkg/postgres" | ||
| pgclient "github.com/absmach/magistrala/pkg/postgres" | ||
| "github.com/absmach/magistrala/pkg/server" | ||
| httpserver "github.com/absmach/magistrala/pkg/server/http" | ||
| "github.com/absmach/magistrala/pkg/uuid" | ||
| "github.com/absmach/magistrala/re" | ||
| httpapi "github.com/absmach/magistrala/re/api" | ||
| repg "github.com/absmach/magistrala/re/postgres" | ||
| "github.com/authzed/authzed-go/v1" | ||
| "github.com/authzed/grpcutil" | ||
| "github.com/caarlos0/env/v11" | ||
| "github.com/jmoiron/sqlx" | ||
| "github.com/redis/go-redis/v9" | ||
| "go.opentelemetry.io/otel/trace" | ||
| "golang.org/x/sync/errgroup" | ||
| "google.golang.org/grpc" | ||
| "google.golang.org/grpc/credentials/insecure" | ||
| ) | ||
|
|
||
| const ( | ||
| svcName = "rules_engine" | ||
| envPrefixDB = "MG_RE_DB_" | ||
| envPrefixHTTP = "MG_RE_HTTP_" | ||
| envPrefixAuth = "MG_AUTH_GRPC_" | ||
| defDB = "r" | ||
| defSvcHTTPPort = "9009" | ||
| defSvcAuthGRPCPort = "7000" | ||
| ) | ||
|
|
||
| type config struct { | ||
| LogLevel string `env:"MG_RE_LOG_LEVEL" envDefault:"info"` | ||
| InstanceID string `env:"MG_RE_INSTANCE_ID" envDefault:""` | ||
| JaegerURL url.URL `env:"MG_JAEGER_URL" envDefault:"http://localhost:4318/v1/traces"` | ||
| SendTelemetry bool `env:"MG_SEND_TELEMETRY" envDefault:"true"` | ||
| ESURL string `env:"MG_ES_URL" envDefault:"nats://localhost:4222"` | ||
| CacheURL string `env:"MG_RE_CACHE_URL" envDefault:"redis://localhost:6379/0"` | ||
| CacheKeyDuration time.Duration `env:"MG_RE_CACHE_KEY_DURATION" envDefault:"10m"` | ||
| TraceRatio float64 `env:"MG_JAEGER_TRACE_RATIO" envDefault:"1.0"` | ||
| SpicedbHost string `env:"MG_SPICEDB_HOST" envDefault:"localhost"` | ||
| SpicedbPort string `env:"MG_SPICEDB_PORT" envDefault:"50051"` | ||
| SpicedbPreSharedKey string `env:"MG_SPICEDB_PRE_SHARED_KEY" envDefault:"12345678"` | ||
| } | ||
|
|
||
| func main() { | ||
| ctx, cancel := context.WithCancel(context.Background()) | ||
| g, ctx := errgroup.WithContext(ctx) | ||
|
|
||
| // Create new rule engine configuration | ||
| cfg := config{} | ||
| if err := env.Parse(&cfg); err != nil { | ||
| log.Fatalf("failed to load %s configuration : %s", svcName, err) | ||
| } | ||
|
|
||
| var logger *slog.Logger | ||
| logger, err := mglog.New(os.Stdout, cfg.LogLevel) | ||
| if err != nil { | ||
| log.Fatalf("failed to init logger: %s", err.Error()) | ||
| } | ||
|
|
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| var exitCode int | ||
| defer mglog.ExitWithError(&exitCode) | ||
|
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| if cfg.InstanceID == "" { | ||
| if cfg.InstanceID, err = uuid.New().ID(); err != nil { | ||
| logger.Error(fmt.Sprintf("failed to generate instanceID: %s", err)) | ||
| exitCode = 1 | ||
| return | ||
| } | ||
| } | ||
|
|
||
| // Create new database for rule engine. | ||
| dbConfig := pgclient.Config{Name: defDB} | ||
| if err := env.ParseWithOptions(&dbConfig, env.Options{Prefix: envPrefixDB}); err != nil { | ||
| logger.Error(err.Error()) | ||
| exitCode = 1 | ||
| return | ||
| } | ||
| db, err := pgclient.Setup(dbConfig, *repg.Migration()) | ||
| if err != nil { | ||
| logger.Error(err.Error()) | ||
| exitCode = 1 | ||
| return | ||
| } | ||
| defer db.Close() | ||
|
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||
| tp, err := jaegerclient.NewProvider(ctx, svcName, cfg.JaegerURL, cfg.InstanceID, cfg.TraceRatio) | ||
| if err != nil { | ||
| logger.Error(fmt.Sprintf("Failed to init Jaeger: %s", err)) | ||
| exitCode = 1 | ||
| return | ||
| } | ||
| defer func() { | ||
| if err := tp.Shutdown(ctx); err != nil { | ||
| logger.Error(fmt.Sprintf("Error shutting down tracer provider: %v", err)) | ||
| } | ||
| }() | ||
| tracer := tp.Tracer(svcName) | ||
|
|
||
| // Setup new redis cache client | ||
| cacheclient, err := redisclient.Connect(cfg.CacheURL) | ||
| if err != nil { | ||
| logger.Error(err.Error()) | ||
| exitCode = 1 | ||
| return | ||
| } | ||
| defer cacheclient.Close() | ||
|
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| policyEvaluator, policyService, err := newSpiceDBPolicyServiceEvaluator(cfg, logger) | ||
| if err != nil { | ||
| logger.Error(err.Error()) | ||
| exitCode = 1 | ||
| return | ||
| } | ||
| logger.Info("Policy evaluator and Policy manager are successfully connected to SpiceDB gRPC server") | ||
|
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| grpcCfg := grpcclient.Config{} | ||
| if err := env.ParseWithOptions(&grpcCfg, env.Options{Prefix: envPrefixAuth}); err != nil { | ||
| logger.Error(fmt.Sprintf("failed to load auth gRPC client configuration : %s", err)) | ||
| exitCode = 1 | ||
| return | ||
| } | ||
| // authn, authnClient, err := authsvcAuthn.NewAuthentication(ctx, grpcCfg) | ||
| // if err != nil { | ||
| // logger.Error(err.Error()) | ||
| // exitCode = 1 | ||
| // return | ||
| // } | ||
| // defer authnClient.Close() | ||
| // logger.Info("AuthN successfully connected to auth gRPC server " + authnClient.Secure()) | ||
|
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| // authz, authzClient, err := authsvcAuthz.NewAuthorization(ctx, grpcCfg) | ||
| // if err != nil { | ||
| // logger.Error(err.Error()) | ||
| // exitCode = 1 | ||
| // return | ||
| // } | ||
| // defer authzClient.Close() | ||
| // logger.Info("AuthZ successfully connected to auth gRPC server " + authnClient.Secure()) | ||
|
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| svc, err := newService(ctx, db, dbConfig, nil, policyEvaluator, policyService, cacheclient, cfg.CacheKeyDuration, cfg.ESURL, tracer, logger) | ||
| if err != nil { | ||
| logger.Error(fmt.Sprintf("failed to create services: %s", err)) | ||
| exitCode = 1 | ||
| return | ||
| } | ||
|
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| httpServerConfig := server.Config{Port: defSvcHTTPPort} | ||
| if err := env.ParseWithOptions(&httpServerConfig, env.Options{Prefix: envPrefixHTTP}); err != nil { | ||
| logger.Error(fmt.Sprintf("failed to load %s HTTP server configuration : %s", svcName, err)) | ||
| exitCode = 1 | ||
| return | ||
| } | ||
| httpSvc := httpserver.NewServer(ctx, cancel, svcName, httpServerConfig, httpapi.MakeHandler(svc, nil, logger, cfg.InstanceID), logger) | ||
|
|
||
| if cfg.SendTelemetry { | ||
| chc := chclient.New(svcName, magistrala.Version, logger, cancel) | ||
| go chc.CallHome(ctx) | ||
| } | ||
|
|
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| // Start all servers | ||
| g.Go(func() error { | ||
| return httpSvc.Start() | ||
| }) | ||
|
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| g.Go(func() error { | ||
| return server.StopSignalHandler(ctx, cancel, logger, svcName, httpSvc) | ||
| }) | ||
|
|
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| if err := g.Wait(); err != nil { | ||
| logger.Error(fmt.Sprintf("%s service terminated: %s", svcName, err)) | ||
| } | ||
| } | ||
|
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| func newService(ctx context.Context, db *sqlx.DB, dbConfig pgclient.Config, authz mgauthz.Authorization, pe policies.Evaluator, ps policies.Service, cacheClient *redis.Client, keyDuration time.Duration, esURL string, tracer trace.Tracer, logger *slog.Logger) (re.Service, error) { | ||
| database := postgres.NewDatabase(db, dbConfig, tracer) | ||
| repo := repg.NewRepository(database) | ||
| idp := uuid.New() | ||
|
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| csvc := re.NewService(repo, repo, idp, nil) | ||
|
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| // csvc = tmiddleware.AuthorizationMiddleware(csvc, authz) | ||
|
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| return csvc, nil | ||
| } | ||
|
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| func newSpiceDBPolicyServiceEvaluator(cfg config, logger *slog.Logger) (policies.Evaluator, policies.Service, error) { | ||
| client, err := authzed.NewClientWithExperimentalAPIs( | ||
| fmt.Sprintf("%s:%s", cfg.SpicedbHost, cfg.SpicedbPort), | ||
| grpc.WithTransportCredentials(insecure.NewCredentials()), | ||
| grpcutil.WithInsecureBearerToken(cfg.SpicedbPreSharedKey), | ||
| ) | ||
| if err != nil { | ||
| return nil, nil, err | ||
| } | ||
| pe := spicedb.NewPolicyEvaluator(client, logger) | ||
| ps := spicedb.NewPolicyService(client, logger) | ||
|
|
||
| return pe, ps, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,5 @@ | ||
| # Magistrala Rule Engine | ||
|
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| [doc]: https://docs.magistrala.abstractmachines.fr | ||
| [compose]: ../docker/docker-compose.yml |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,6 @@ | ||
| // Copyright (c) Abstract Machines | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
|
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| // Package api contains API-related concerns: endpoint definitions, middlewares | ||
| // and all resource representations. | ||
| package api |
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