// Copyright 2015 Google LLC

//

// Licensed under the Apache License, Version 2.0 (the "License");

// you may not use this file except in compliance with the License.

// You may obtain a copy of the License at

//

// http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing, software

// distributed under the License is distributed on an "AS IS" BASIS,

// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

// See the License for the specific language governing permissions and

// limitations under the License.

// TODO(kjin): Once tests are fully converted, undercase the name of this

// variable.

/** Constant values. */

export const Constants = {

/** The metadata key under which trace context is stored as a binary value. */

TRACE_CONTEXT_GRPC_METADATA_NAME: 'grpc-trace-bin',

/** Header that carries trace context across Google infrastructure. */

TRACE_CONTEXT_HEADER_NAME: 'x-cloud-trace-context',

/** Header that is used to identify outgoing http made by the agent. */

TRACE_AGENT_REQUEST_HEADER: 'x-cloud-trace-agent-request',

/** Bitmask to determine whether trace is enabled in trace options. */

TRACE_OPTIONS_TRACE_ENABLED: 1 << 0,

/**

* Maximum size of a span name in bytes.

* See: cloud.google.com/trace/api/reference/rest/v1/projects.traces for

* limits.

*/

TRACE_SERVICE_SPAN_NAME_LIMIT: 127,

/** Maximum size of a label key in bytes. */

TRACE_SERVICE_LABEL_KEY_LIMIT: 127,

/** Maximum size of a label value in bytes. */

TRACE_SERVICE_LABEL_VALUE_LIMIT: 16 * 1024 - 1,

};

/**

* An enumeration of the possible "types" of spans.

*/

export enum SpanType {

}