* Revert "Use test helper. (#1977)"
This reverts commit e498cab239
.
* Avoid duplicate newlines
Ensure that we print exactly one trailing newline per log entry.
213 lines
6.5 KiB
Go
213 lines
6.5 KiB
Go
// Copyright 2016-2018, Pulumi Corporation.
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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 operations
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import (
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"sort"
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"sync"
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"time"
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"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/aws/credentials"
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"github.com/aws/aws-sdk-go/aws/session"
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"github.com/aws/aws-sdk-go/service/cloudwatchlogs"
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"github.com/pkg/errors"
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"github.com/pulumi/pulumi/pkg/resource/config"
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"github.com/pulumi/pulumi/pkg/tokens"
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"github.com/pulumi/pulumi/pkg/util/logging"
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)
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// TODO[pulumi/pulumi#54] This should be factored out behind an OperationsProvider RPC interface and versioned with the
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// `pulumi-aws` repo instead of statically linked into the engine.
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// AWSOperationsProvider creates an OperationsProvider capable of answering operational queries based on the
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// underlying resources of the `@pulumi/aws` implementation.
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func AWSOperationsProvider(
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config map[config.Key]string,
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component *Resource) (Provider, error) {
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awsRegion, ok := config[regionKey]
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if !ok {
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return nil, errors.New("no AWS region found")
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}
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// If provided, also pass along the access and secret keys so that we have permission to access operational data on
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// resources in the target account.
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//
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// [pulumi/pulumi#608]: We are only approximating the actual logic that the AWS provider (via
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// terraform-provdider-aws) uses to turn config into a valid AWS connection. We should find some way to unify these
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// as part of moving this code into a separate process on the other side of an RPC boundary.
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awsAccessKey := config[accessKey]
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awsSecretKey := config[secretKey]
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awsToken := config[token]
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sess, err := getAWSSession(awsRegion, awsAccessKey, awsSecretKey, awsToken)
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if err != nil {
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return nil, err
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}
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connection := &awsConnection{
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logSvc: cloudwatchlogs.New(sess),
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}
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prov := &awsOpsProvider{
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awsConnection: connection,
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component: component,
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}
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return prov, nil
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}
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type awsOpsProvider struct {
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awsConnection *awsConnection
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component *Resource
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}
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var _ Provider = (*awsOpsProvider)(nil)
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var (
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// AWS config keys
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regionKey = config.MustMakeKey("aws", "region")
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accessKey = config.MustMakeKey("aws", "accessKey")
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secretKey = config.MustMakeKey("aws", "secretKey")
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token = config.MustMakeKey("aws", "token")
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)
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const (
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// AWS resource types
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awsFunctionType = tokens.Type("aws:lambda/function:Function")
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awsLogGroupType = tokens.Type("aws:cloudwatch/logGroup:LogGroup")
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)
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func (ops *awsOpsProvider) GetLogs(query LogQuery) (*[]LogEntry, error) {
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state := ops.component.State
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logging.V(6).Infof("GetLogs[%v]", state.URN)
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switch state.Type {
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case awsFunctionType:
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functionName := state.Outputs["name"].StringValue()
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logResult := ops.awsConnection.getLogsForLogGroupsConcurrently(
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[]string{functionName},
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[]string{"/aws/lambda/" + functionName},
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query.StartTime,
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query.EndTime,
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)
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sort.SliceStable(logResult, func(i, j int) bool { return logResult[i].Timestamp < logResult[j].Timestamp })
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logging.V(5).Infof("GetLogs[%v] return %d logs", state.URN, len(logResult))
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return &logResult, nil
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case awsLogGroupType:
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name := state.Outputs["name"].StringValue()
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logResult := ops.awsConnection.getLogsForLogGroupsConcurrently(
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[]string{name},
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[]string{name},
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query.StartTime,
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query.EndTime,
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)
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sort.SliceStable(logResult, func(i, j int) bool { return logResult[i].Timestamp < logResult[j].Timestamp })
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logging.V(5).Infof("GetLogs[%v] return %d logs", state.URN, len(logResult))
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return &logResult, nil
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default:
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// Else this resource kind does not produce any logs.
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logging.V(6).Infof("GetLogs[%v] does not produce logs", state.URN)
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return nil, nil
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}
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}
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type awsConnection struct {
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logSvc *cloudwatchlogs.CloudWatchLogs
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}
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var awsDefaultSession *session.Session
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var awsDefaultSessionMutex sync.Mutex
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func getAWSSession(awsRegion, awsAccessKey, awsSecretKey, token string) (*session.Session, error) {
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// AWS SDK for Go documentation: "Sessions should be cached when possible"
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// We keep a default session around and then make cheap copies of it.
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awsDefaultSessionMutex.Lock()
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defer awsDefaultSessionMutex.Unlock()
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if awsDefaultSession == nil {
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sess, err := session.NewSession()
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if err != nil {
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return nil, errors.Wrap(err, "failed to create AWS session")
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}
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awsDefaultSession = sess
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}
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extraConfig := aws.NewConfig()
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extraConfig.Region = aws.String(awsRegion)
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if awsAccessKey != "" || awsSecretKey != "" || token != "" {
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extraConfig.Credentials = credentials.NewStaticCredentials(awsAccessKey, awsSecretKey, token)
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}
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return awsDefaultSession.Copy(extraConfig), nil
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}
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func (p *awsConnection) getLogsForLogGroupsConcurrently(
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names []string,
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logGroups []string,
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startTime *time.Time,
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endTime *time.Time) []LogEntry {
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// Create a channel for collecting log event outputs
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ch := make(chan []*cloudwatchlogs.FilteredLogEvent, len(logGroups))
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var startMilli *int64
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if startTime != nil {
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startMilli = aws.Int64(aws.TimeUnixMilli(*startTime))
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}
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var endMilli *int64
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if endTime != nil {
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endMilli = aws.Int64(aws.TimeUnixMilli(*endTime))
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}
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// Run FilterLogEvents for each log group in parallel
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for _, logGroup := range logGroups {
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go func(logGroup string) {
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var ret []*cloudwatchlogs.FilteredLogEvent
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err := p.logSvc.FilterLogEventsPages(&cloudwatchlogs.FilterLogEventsInput{
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LogGroupName: aws.String(logGroup),
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StartTime: startMilli,
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EndTime: endMilli,
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}, func(resp *cloudwatchlogs.FilterLogEventsOutput, lastPage bool) bool {
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ret = append(ret, resp.Events...)
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if !lastPage {
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logging.V(5).Infof("[getLogs] Getting more logs for %v...\n", logGroup)
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}
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return true
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})
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if err != nil {
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logging.V(5).Infof("[getLogs] Error getting logs: %v %v\n", logGroup, err)
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}
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ch <- ret
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}(logGroup)
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}
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// Collect responses on the channel and append logs into combined log array
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var logs []LogEntry
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for i := 0; i < len(logGroups); i++ {
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logEvents := <-ch
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for _, event := range logEvents {
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logs = append(logs, LogEntry{
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ID: names[i],
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Message: aws.StringValue(event.Message),
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Timestamp: aws.Int64Value(event.Timestamp),
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})
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}
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}
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return logs
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}
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