| // Copyright 2015 The Prometheus Authors |
| // 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. |
| |
| // Package expfmt contains tools for reading and writing Prometheus metrics. |
| package expfmt |
| |
| // Format specifies the HTTP content type of the different wire protocols. |
| type Format string |
| |
| // Constants to assemble the Content-Type values for the different wire protocols. |
| const ( |
| TextVersion = "0.0.4" |
| ProtoType = `application/vnd.google.protobuf` |
| ProtoProtocol = `io.prometheus.client.MetricFamily` |
| ProtoFmt = ProtoType + "; proto=" + ProtoProtocol + ";" |
| |
| // The Content-Type values for the different wire protocols. |
| FmtUnknown Format = `<unknown>` |
| FmtText Format = `text/plain; version=` + TextVersion + `; charset=utf-8` |
| FmtProtoDelim Format = ProtoFmt + ` encoding=delimited` |
| FmtProtoText Format = ProtoFmt + ` encoding=text` |
| FmtProtoCompact Format = ProtoFmt + ` encoding=compact-text` |
| ) |
| |
| const ( |
| hdrContentType = "Content-Type" |
| hdrAccept = "Accept" |
| ) |