71 lines
2.3 KiB
Go
71 lines
2.3 KiB
Go
// Copyright 2018 The Go Cloud Development Kit 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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// https://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 xrayserver provides the diagnostic hooks for a server using
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// AWS X-Ray.
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package xrayserver // import "gocloud.dev/server/xrayserver"
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import (
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"fmt"
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"os"
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exporter "contrib.go.opencensus.io/exporter/aws"
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"github.com/aws/aws-sdk-go/aws/client"
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"github.com/aws/aws-sdk-go/service/xray"
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"github.com/aws/aws-sdk-go/service/xray/xrayiface"
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"github.com/google/wire"
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"go.opencensus.io/trace"
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"gocloud.dev/server"
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"gocloud.dev/server/requestlog"
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)
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// Set is a Wire provider set that provides the diagnostic hooks for
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// *server.Server. This set includes ServiceSet.
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var Set = wire.NewSet(
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server.Set,
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ServiceSet,
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NewExporter,
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wire.Bind(new(trace.Exporter), new(*exporter.Exporter)),
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NewRequestLogger,
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wire.Bind(new(requestlog.Logger), new(*requestlog.NCSALogger)),
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)
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// ServiceSet is a Wire provider set that provides the AWS X-Ray service
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// client given an AWS session.
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var ServiceSet = wire.NewSet(
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NewXRayClient,
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wire.Bind(new(xrayiface.XRayAPI), new(*xray.XRay)),
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)
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// NewExporter returns a new X-Ray exporter.
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//
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// The second return value is a Wire cleanup function that calls Close
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// on the exporter, ignoring the error.
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func NewExporter(api xrayiface.XRayAPI) (*exporter.Exporter, func(), error) {
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e, err := exporter.NewExporter(exporter.WithAPI(api))
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if err != nil {
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return nil, nil, err
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}
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return e, func() { e.Close() }, nil
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}
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// NewXRayClient returns a new AWS X-Ray client.
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func NewXRayClient(p client.ConfigProvider) *xray.XRay {
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return xray.New(p)
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}
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// NewRequestLogger returns a request logger that sends entries to stdout.
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func NewRequestLogger() *requestlog.NCSALogger {
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return requestlog.NewNCSALogger(os.Stdout, func(e error) { fmt.Fprintln(os.Stderr, e) })
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}
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