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https://github.com/open-telemetry/opentelemetry-go.git
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56 lines
2.5 KiB
Go
56 lines
2.5 KiB
Go
// Copyright The OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package othttp
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import (
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"net/http"
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"go.opentelemetry.io/otel/api/kv"
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"go.opentelemetry.io/otel/api/trace"
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)
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// Attribute keys that can be added to a span.
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const (
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HostKey = kv.Key("http.host") // the HTTP host (http.Request.Host)
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MethodKey = kv.Key("http.method") // the HTTP method (http.Request.Method)
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PathKey = kv.Key("http.path") // the HTTP path (http.Request.URL.Path)
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URLKey = kv.Key("http.url") // the HTTP URL (http.Request.URL.String())
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UserAgentKey = kv.Key("http.user_agent") // the HTTP user agent (http.Request.UserAgent())
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RouteKey = kv.Key("http.route") // the HTTP route (ex: /users/:id)
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RemoteAddrKey = kv.Key("http.remote_addr") // the network address of the client that sent the HTTP request (http.Request.RemoteAddr)
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StatusCodeKey = kv.Key("http.status_code") // if set, the HTTP status
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ReadBytesKey = kv.Key("http.read_bytes") // if anything was read from the request body, the total number of bytes read
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ReadErrorKey = kv.Key("http.read_error") // If an error occurred while reading a request, the string of the error (io.EOF is not recorded)
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WroteBytesKey = kv.Key("http.wrote_bytes") // if anything was written to the response writer, the total number of bytes written
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WriteErrorKey = kv.Key("http.write_error") // if an error occurred while writing a reply, the string of the error (io.EOF is not recorded)
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)
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// Filter is a predicate used to determine whether a given http.request should
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// be traced. A Filter must return true if the request should be traced.
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type Filter func(*http.Request) bool
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// Setup basic span attributes before so that they
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// are available to be mutated if needed.
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func setBasicAttributes(span trace.Span, r *http.Request) {
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span.SetAttributes(
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HostKey.String(r.Host),
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MethodKey.String(r.Method),
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PathKey.String(r.URL.Path),
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URLKey.String(r.URL.String()),
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UserAgentKey.String(r.UserAgent()),
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)
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}
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