feat #35: Add sqlite3 storage backend

Dockerfile

@@ -3,7 +3,7 @@ ARG TARGETPLATFORM
 ARG BUILDPLATFORM
 WORKDIR /go/src/git.faercol.me/polyculeconnect
 COPY polyculeconnect ./
-RUN CGO_ENABLED=0 make build
+RUN make build
 
 # Replace with from scratch later on
 FROM --platform=$TARGETPLATFORM alpine:latest

polyculeconnect/go.mod

@@ -27,6 +27,7 @@ require (
 	github.com/go-asn1-ber/asn1-ber v1.5.5 // indirect
 	github.com/go-jose/go-jose/v3 v3.0.0 // indirect
 	github.com/go-ldap/ldap/v3 v3.4.6 // indirect
+	github.com/go-sql-driver/mysql v1.7.1 // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
 	github.com/google/s2a-go v0.1.7 // indirect
@@ -38,7 +39,9 @@ require (
 	github.com/huandu/xstrings v1.3.3 // indirect
 	github.com/imdario/mergo v0.3.11 // indirect
 	github.com/jonboulle/clockwork v0.2.2 // indirect
+	github.com/lib/pq v1.10.9 // indirect
 	github.com/mattermost/xml-roundtrip-validator v0.1.0 // indirect
+	github.com/mattn/go-sqlite3 v1.14.17 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
 	github.com/mitchellh/copystructure v1.0.0 // indirect
 	github.com/mitchellh/reflectwalk v1.0.0 // indirect

polyculeconnect/go.sum

@@ -51,6 +51,8 @@ github.com/go-jose/go-jose/v3 v3.0.0 h1:s6rrhirfEP/CGIoc6p+PZAeogN2SxKav6Wp7+dyM
 github.com/go-jose/go-jose/v3 v3.0.0/go.mod h1:RNkWWRld676jZEYoV3+XK8L2ZnNSvIsxFMht0mSX+u8=
 github.com/go-ldap/ldap/v3 v3.4.6 h1:ert95MdbiG7aWo/oPYp9btL3KJlMPKnP58r09rI8T+A=
 github.com/go-ldap/ldap/v3 v3.4.6/go.mod h1:IGMQANNtxpsOzj7uUAMjpGBaOVTC4DYyIy8VsTdxmtc=
+github.com/go-sql-driver/mysql v1.7.1 h1:lUIinVbN1DY0xBg0eMOzmmtGoHwWBbvnWubQUrtU8EI=
+github.com/go-sql-driver/mysql v1.7.1/go.mod h1:OXbVy3sEdcQ2Doequ6Z5BW6fXNQTmx+9S1MCJN5yJMI=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
 github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da h1:oI5xCqsCo564l8iNU+DwB5epxmsaqB+rhGL0m5jtYqE=
@@ -106,8 +108,12 @@ github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0SNc=
+github.com/lib/pq v1.10.9 h1:YXG7RB+JIjhP29X+OtkiDnYaXQwpS4JEWq7dtCCRUEw=
+github.com/lib/pq v1.10.9/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
 github.com/mattermost/xml-roundtrip-validator v0.1.0 h1:RXbVD2UAl7A7nOTR4u7E3ILa4IbtvKBHw64LDsmu9hU=
 github.com/mattermost/xml-roundtrip-validator v0.1.0/go.mod h1:qccnGMcpgwcNaBnxqpJpWWUiPNr5H3O8eDgGV9gT5To=
+github.com/mattn/go-sqlite3 v1.14.17 h1:mCRHCLDUBXgpKAqIKsaAaAsrAlbkeomtRFKXh2L6YIM=
+github.com/mattn/go-sqlite3 v1.14.17/go.mod h1:2eHXhiwb8IkHr+BDWZGa96P6+rkvnG63S2DGjv9HUNg=
 github.com/matttproud/golang_protobuf_extensions v1.0.4 h1:mmDVorXM7PCGKw94cs5zkfA9PSy5pEvNWRP0ET0TIVo=
 github.com/matttproud/golang_protobuf_extensions v1.0.4/go.mod h1:BSXmuO+STAnVfrANrmjBb36TMTDstsz7MSK+HVaYKv4=
 github.com/mitchellh/copystructure v1.0.0 h1:Laisrj+bAB6b/yJwB5Bt3ITZhGJdqmxquMKeZ+mmkFQ=

polyculeconnect/main.go

@@ -13,9 +13,11 @@ import (
 	"git.faercol.me/faercol/polyculeconnect/polyculeconnect/connector"
 	"git.faercol.me/faercol/polyculeconnect/polyculeconnect/logger"
 	"git.faercol.me/faercol/polyculeconnect/polyculeconnect/server"
+	"github.com/dexidp/dex/connector/oidc"
 	dex_server "github.com/dexidp/dex/server"
 	"github.com/dexidp/dex/storage"
 	"github.com/dexidp/dex/storage/memory"
+	"github.com/dexidp/dex/storage/sql"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
@@ -37,15 +39,43 @@ func parseArgs() *cliArgs {
 
 func initStorage(conf *config.AppConfig) (storage.Storage, error) {
 	var storageType storage.Storage
+	var err error
 	switch conf.StorageType {
 	case "memory":
 		storageType = memory.New(logger.L)
+	case "sqlite":
+		sqlconfig := sql.SQLite3{
+			File: conf.StorageConfig.File,
+		}
+		storageType, err = sqlconfig.Open(logger.L)
+		if err != nil {
+			logger.L.Fatalf("Failed to initialize sqlite backend: %s", err.Error())
+		}
 	default:
 		return storageType, fmt.Errorf("unsupported storage backend type: %s", conf.StorageType)
 	}
 	return storageType, nil
 }
 
+func createConnector(backend *config.BackendConfig, dexConf *dex_server.Config, connectorIDs []string) error {
+	for _, id := range connectorIDs {
+		if id == backend.ID {
+			return nil
+		}
+	}
+
+	backendConfJson, err := json.Marshal(backend.Config)
+	if err != nil {
+		return fmt.Errorf("failed to serialize oidc config for backend %q: %s", backend.Name, err.Error())
+	}
+	return dexConf.Storage.CreateConnector(storage.Connector{
+		ID:     backend.ID,
+		Name:   backend.Name,
+		Type:   string(backend.Type),
+		Config: backendConfJson,
+	})
+}
+
 func main() {
 	args := parseArgs()
 
@@ -81,27 +111,28 @@ func main() {
 	logger.L.Info("Initializing authentication backends")
 
 	dex_server.ConnectorsConfig["refuseAll"] = func() dex_server.ConnectorConfig { return new(connector.RefuseAllConfig) }
-	if err := dexConf.Storage.CreateConnector(storage.Connector{
-		ID:     "null",
+	connectors, err := dexConf.Storage.ListConnectors()
+	if err != nil {
+		logger.L.Fatalf("Failed to get existing connectors: %s", err.Error())
+	}
+	var connectorIDs []string
+	for _, conn := range connectors {
+		connectorIDs = append(connectorIDs, conn.ID)
+	}
+
+	backend := config.BackendConfig{
+		Config: &oidc.Config{},
 		Name:   "RefuseAll",
+		ID:     "null",
 		Type:   "refuseAll",
-		Config: nil,
-	}); err != nil {
+	}
+
+	if err := createConnector(&backend, &dexConf, connectorIDs); err != nil {
 		logger.L.Errorf("Failed to add connector for backend RefuseAll to stage: %s", err.Error())
 	}
 
 	for _, backend := range conf.OpenConnectConfig.BackendConfigs {
-		backendConfJson, err := json.Marshal(backend.Config)
-		if err != nil {
-			logger.L.Errorf("Failed to serialize oidc config for backend %q: %s", backend.Name, err.Error())
-			continue
-		}
-		if err := dexConf.Storage.CreateConnector(storage.Connector{
-			ID:     backend.ID,
-			Name:   backend.Name,
-			Type:   string(backend.Type),
-			Config: backendConfJson,
-		}); err != nil {
+		if err := createConnector(backend, &dexConf, connectorIDs); err != nil {
 			logger.L.Errorf("Failed to add connector for backend %q to stage: %s", backend.Name, err.Error())
 			continue
 		}