forked from uber/tchannel-go
/
constants.go
54 lines (44 loc) · 1.83 KB
/
constants.go
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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package trace
import "errors"
const (
// S1 instructions
sampledParam = "sampled"
server1NameParam = "s1name"
// S1->S2 instructions
server2NameParam = "s2name"
server2EncodingParam = "s2encoding"
// S2->S3 instructions
server3NameParam = "s3name"
server3EncodingParam = "s3encoding"
// RoleS1 is the name of the role for server S1
RoleS1 = "S1"
// RoleS2 is the name of the role for server S2
RoleS2 = "S2"
// RoleS3 is the name of the role for server S3
RoleS3 = "S3"
// BaggageKey is the key used to pass baggage item
BaggageKey = "crossdock-baggage-key"
)
var (
errNoSpanObserved = errors.New("no span found in Context")
errUnsupportedEncoding = errors.New("unsupported encoding for downstream call")
)