| 1 | /**
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| 2 | * Copyright 2015 Google Inc. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | */
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| 16 |
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| 17 | ;
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| 18 |
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| 19 | module.exports = {
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| 20 | /** @const {string} header that carries trace context across Google infrastructure. */
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| 21 | TRACE_CONTEXT_HEADER_NAME: 'x-cloud-trace-context',
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| 22 |
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| 23 | /** @const {string} header that is used to identify outgoing http made by the agent. */
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| 24 | TRACE_AGENT_REQUEST_HEADER: 'x-cloud-trace-agent-request',
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| 25 |
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| 26 | /** @const {number} bitmask to determine whether trace is enabled in trace options. */
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| 27 | TRACE_OPTIONS_TRACE_ENABLED: 1 << 0
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| 28 | };
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