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khenaidoo59ce9dd2019-11-11 13:05:32 -05001// Copyright 2015 The Prometheus Authors
2// Licensed under the Apache License, Version 2.0 (the "License");
3// you may not use this file except in compliance with the License.
4// You may obtain a copy of the License at
5//
6// http://www.apache.org/licenses/LICENSE-2.0
7//
8// Unless required by applicable law or agreed to in writing, software
9// distributed under the License is distributed on an "AS IS" BASIS,
10// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11// See the License for the specific language governing permissions and
12// limitations under the License.
13
14// Package expfmt contains tools for reading and writing Prometheus metrics.
15package expfmt
16
17// Format specifies the HTTP content type of the different wire protocols.
18type Format string
19
20// Constants to assemble the Content-Type values for the different wire protocols.
21const (
22 TextVersion = "0.0.4"
23 ProtoType = `application/vnd.google.protobuf`
24 ProtoProtocol = `io.prometheus.client.MetricFamily`
25 ProtoFmt = ProtoType + "; proto=" + ProtoProtocol + ";"
26
27 // The Content-Type values for the different wire protocols.
28 FmtUnknown Format = `<unknown>`
29 FmtText Format = `text/plain; version=` + TextVersion + `; charset=utf-8`
30 FmtProtoDelim Format = ProtoFmt + ` encoding=delimited`
31 FmtProtoText Format = ProtoFmt + ` encoding=text`
32 FmtProtoCompact Format = ProtoFmt + ` encoding=compact-text`
33)
34
35const (
36 hdrContentType = "Content-Type"
37 hdrAccept = "Accept"
38)