add acl token (#20086)

command/resource/client/grpc-config.go

@@ -38,6 +38,14 @@ const (
 	// GRPCCAPathEnvName defines an environment variable name which sets the
 	// path to a directory of CA certs to use for talking to Consul gRPC over TLS.
 	GRPCCAPathEnvName = "CONSUL_GRPC_CAPATH"
+
+	// GRPCTokenEnvName defines an environment variable name which sets
+	// the GRPC token.
+	GRPCTokenEnvName = "CONSUL_GRPC_TOKEN"
+
+	// GRPCTokenFileEnvName defines an environment variable name which sets
+	// the GRPC token file.
+	GRPCTokenFileEnvName = "CONSUL_GRPC_TOKEN_FILE"
 )
 
 type GRPCConfig struct {
@@ -67,6 +75,14 @@ type GRPCConfig struct {
 	// CAPath is the optional path to a directory of CA certificates to use for
 	// Consul communication, defaults to the system bundle if not specified.
 	CAPath string
+
+	// Token is used to provide a per-request ACL token
+	// which overrides the agent's default token.
+	Token string
+
+	// TokenFile is a file containing the current token to use for this client.
+	// If provided it is read once at startup and never again.
+	TokenFile string
 }
 
 func GetDefaultGRPCConfig() *GRPCConfig {
@@ -131,5 +147,13 @@ func loadEnvToDefaultConfig(config *GRPCConfig) (*GRPCConfig, error) {
 		config.CAPath = caPath
 	}
 
+	if token := os.Getenv(GRPCTokenEnvName); token != "" {
+		config.Token = token
+	}
+
+	if tokenFile := os.Getenv(GRPCTokenFileEnvName); tokenFile != "" {
+		config.TokenFile = tokenFile
+	}
+
 	return config, nil
 }

command/resource/client/grpc-config_test.go

@@ -27,6 +27,8 @@ func TestLoadGRPCConfig(t *testing.T) {
 		t.Setenv(GRPCClientKeyEnvName, "/path/to/client.key")
 		t.Setenv(GRPCCAFileEnvName, "/path/to/ca.crt")
 		t.Setenv(GRPCCAPathEnvName, "/path/to/cacerts")
+		t.Setenv(GRPCTokenEnvName, "token")
+		t.Setenv(GRPCTokenFileEnvName, "/path/to/token/file")
 
 		// Load and validate the configuration
 		config, err := LoadGRPCConfig(nil)
@@ -39,6 +41,8 @@ func TestLoadGRPCConfig(t *testing.T) {
 			KeyFile:       "/path/to/client.key",
 			CAFile:        "/path/to/ca.crt",
 			CAPath:        "/path/to/cacerts",
+			Token:         "token",
+			TokenFile:     "/path/to/token/file",
 		}
 		assert.Equal(t, expectedConfig, config)
 	})

command/resource/client/grpc-flags.go

@@ -15,6 +15,8 @@ type GRPCFlags struct {
 	keyFile   TValue[string]
 	caFile    TValue[string]
 	caPath    TValue[string]
+	token     TValue[string]
+	tokenFile TValue[string]
 }
 
 // MergeFlagsIntoGRPCConfig merges flag values into grpc config
@@ -34,6 +36,8 @@ func (f *GRPCFlags) MergeFlagsIntoGRPCConfig(c *GRPCConfig) {
 	f.keyFile.Merge(&c.KeyFile)
 	f.caFile.Merge(&c.CAFile)
 	f.caPath.Merge(&c.CAPath)
+	f.token.Merge(&c.Token)
+	f.tokenFile.Merge(&c.TokenFile)
 }
 
 // merge the client flags into command line flags then parse command line flags
@@ -60,5 +64,13 @@ func (f *GRPCFlags) ClientFlags() *flag.FlagSet {
 	fs.Var(&f.caPath, "ca-path",
 		"Path to a directory of CA certificates to use for TLS when communicating "+
 			"with Consul. This can also be specified via the CONSUL_CAPATH environment variable.")
+	fs.Var(&f.token, "token",
+		"ACL token to use in the request. This can also be specified via the "+
+			"CONSUL_GRPC_TOKEN environment variable. If unspecified, the query will "+
+			"default to the token of the Consul agent at the GRPC address.")
+	fs.Var(&f.tokenFile, "token-file",
+		"File containing the ACL token to use in the request instead of one specified "+
+			"via the -token argument or CONSUL_GRPC_TOKEN environment variable. "+
+			"This can also be specified via the CONSUL_GRPC_TOKEN_FILE environment variable.")
 	return fs
 }

command/resource/client/grpc-flags_test.go

@@ -19,6 +19,8 @@ func TestMergeFlagsIntoGRPCConfig(t *testing.T) {
 			keyFile:   TValue[string]{v: stringPointer("/path/to/client.key")},
 			caFile:    TValue[string]{v: stringPointer("/path/to/ca.crt")},
 			caPath:    TValue[string]{v: stringPointer("/path/to/cacerts")},
+			token:     TValue[string]{v: stringPointer("token")},
+			tokenFile: TValue[string]{v: stringPointer("/path/to/token/file")},
 		}
 
 		// Setup GRPCConfig with some initial values
@@ -30,6 +32,8 @@ func TestMergeFlagsIntoGRPCConfig(t *testing.T) {
 			KeyFile:       "/path/to/default/client.key",
 			CAFile:        "/path/to/default/ca.crt",
 			CAPath:        "/path/to/default/cacerts",
+			Token:         "default-token",
+			TokenFile:     "/path/to/default/token/file",
 		}
 
 		// Call MergeFlagsIntoGRPCConfig to merge flag values into the config
@@ -44,6 +48,8 @@ func TestMergeFlagsIntoGRPCConfig(t *testing.T) {
 			KeyFile:       "/path/to/client.key",
 			CAFile:        "/path/to/ca.crt",
 			CAPath:        "/path/to/cacerts",
+			Token:         "token",
+			TokenFile:     "/path/to/token/file",
 		}
 
 		assert.Equal(t, expectedConfig, config)