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input.go
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input.go
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// Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
// or more contributor license agreements. Licensed under the Elastic License;
// you may not use this file except in compliance with the Elastic License.
package awss3
import (
"context"
"fmt"
"net/url"
"strings"
awssdk "github.com/aws/aws-sdk-go-v2/aws"
"github.com/aws/aws-sdk-go-v2/service/s3"
"github.com/aws/aws-sdk-go-v2/service/sqs"
"github.com/elastic/beats/v7/filebeat/beater"
v2 "github.com/elastic/beats/v7/filebeat/input/v2"
"github.com/elastic/beats/v7/libbeat/beat"
"github.com/elastic/beats/v7/libbeat/feature"
"github.com/elastic/beats/v7/libbeat/statestore"
awscommon "github.com/elastic/beats/v7/x-pack/libbeat/common/aws"
conf "github.com/elastic/elastic-agent-libs/config"
"github.com/elastic/elastic-agent-libs/monitoring"
"github.com/elastic/go-concert/unison"
)
const inputName = "aws-s3"
func Plugin(store beater.StateStore) v2.Plugin {
return v2.Plugin{
Name: inputName,
Stability: feature.Stable,
Deprecated: false,
Info: "Collect logs from s3",
Manager: &s3InputManager{store: store},
}
}
type s3InputManager struct {
store beater.StateStore
}
func (im *s3InputManager) Init(grp unison.Group, mode v2.Mode) error {
return nil
}
func (im *s3InputManager) Create(cfg *conf.C) (v2.Input, error) {
config := defaultConfig()
if err := cfg.Unpack(&config); err != nil {
return nil, err
}
return newInput(config, im.store)
}
// s3Input is a input for reading logs from S3 when triggered by an SQS message.
type s3Input struct {
config config
awsConfig awssdk.Config
store beater.StateStore
}
func newInput(config config, store beater.StateStore) (*s3Input, error) {
awsConfig, err := awscommon.InitializeAWSConfig(config.AWSConfig)
if err != nil {
return nil, fmt.Errorf("failed to initialize AWS credentials: %w", err)
}
return &s3Input{
config: config,
awsConfig: awsConfig,
store: store,
}, nil
}
func (in *s3Input) Name() string { return inputName }
func (in *s3Input) Test(ctx v2.TestContext) error {
return nil
}
func (in *s3Input) Run(inputContext v2.Context, pipeline beat.Pipeline) error {
var err error
persistentStore, err := in.store.Access()
if err != nil {
return fmt.Errorf("can not access persistent store: %w", err)
}
defer persistentStore.Close()
states := newStates(inputContext)
err = states.readStatesFrom(persistentStore)
if err != nil {
return fmt.Errorf("can not start persistent store: %w", err)
}
// Wrap input Context's cancellation Done channel a context.Context. This
// goroutine stops with the parent closes the Done channel.
ctx, cancelInputCtx := context.WithCancel(context.Background())
go func() {
defer cancelInputCtx()
select {
case <-inputContext.Cancelation.Done():
case <-ctx.Done():
}
}()
defer cancelInputCtx()
// Create client for publishing events and receive notification of their ACKs.
client, err := pipeline.ConnectWith(beat.ClientConfig{
CloseRef: inputContext.Cancelation,
ACKHandler: awscommon.NewEventACKHandler(),
})
if err != nil {
return fmt.Errorf("failed to create pipeline client: %w", err)
}
defer client.Close()
if in.config.QueueURL != "" {
regionName, err := getRegionFromQueueURL(in.config.QueueURL, in.config.AWSConfig.Endpoint)
if err != nil {
return fmt.Errorf("failed to get AWS region from queue_url: %w", err)
}
in.awsConfig.Region = regionName
// Create SQS receiver and S3 notification processor.
receiver, err := in.createSQSReceiver(inputContext, client)
if err != nil {
return fmt.Errorf("failed to initialize sqs receiver: %w", err)
}
defer receiver.metrics.Close()
if err := receiver.Receive(ctx); err != nil {
return err
}
}
if in.config.BucketARN != "" || in.config.NonAWSBucketName != "" {
// Create S3 receiver and S3 notification processor.
poller, err := in.createS3Lister(inputContext, ctx, client, persistentStore, states)
if err != nil {
return fmt.Errorf("failed to initialize s3 poller: %w", err)
}
defer poller.metrics.Close()
if err := poller.Poll(ctx); err != nil {
return err
}
}
return nil
}
func (in *s3Input) createSQSReceiver(ctx v2.Context, client beat.Client) (*sqsReader, error) {
s3ServiceName := awscommon.CreateServiceName("s3", in.config.AWSConfig.FIPSEnabled, in.awsConfig.Region)
sqsServiceName := awscommon.CreateServiceName("sqs", in.config.AWSConfig.FIPSEnabled, in.awsConfig.Region)
sqsAPI := &awsSQSAPI{
client: sqs.New(awscommon.EnrichAWSConfigWithEndpoint(in.config.AWSConfig.Endpoint, sqsServiceName, in.awsConfig.Region, in.awsConfig)),
queueURL: in.config.QueueURL,
apiTimeout: in.config.APITimeout,
visibilityTimeout: in.config.VisibilityTimeout,
longPollWaitTime: in.config.SQSWaitTime,
}
s3API := &awsS3API{
client: s3.New(awscommon.EnrichAWSConfigWithEndpoint(in.config.AWSConfig.Endpoint, s3ServiceName, in.awsConfig.Region, in.awsConfig)),
}
log := ctx.Logger.With("queue_url", in.config.QueueURL)
log.Infof("AWS api_timeout is set to %v.", in.config.APITimeout)
log.Infof("AWS region is set to %v.", in.awsConfig.Region)
log.Infof("AWS SQS visibility_timeout is set to %v.", in.config.VisibilityTimeout)
log.Infof("AWS SQS max_number_of_messages is set to %v.", in.config.MaxNumberOfMessages)
log.Debugf("AWS S3 service name is %v.", s3ServiceName)
metricRegistry := monitoring.GetNamespace("dataset").GetRegistry()
metrics := newInputMetrics(metricRegistry, ctx.ID)
fileSelectors := in.config.FileSelectors
if len(in.config.FileSelectors) == 0 {
fileSelectors = []fileSelectorConfig{{ReaderConfig: in.config.ReaderConfig}}
}
script, err := newScriptFromConfig(log.Named("sqs_script"), in.config.SQSScript)
if err != nil {
return nil, err
}
s3EventHandlerFactory := newS3ObjectProcessorFactory(log.Named("s3"), metrics, s3API, client, fileSelectors)
sqsMessageHandler := newSQSS3EventProcessor(log.Named("sqs_s3_event"), metrics, sqsAPI, script, in.config.VisibilityTimeout, in.config.SQSMaxReceiveCount, s3EventHandlerFactory)
sqsReader := newSQSReader(log.Named("sqs"), metrics, sqsAPI, in.config.MaxNumberOfMessages, sqsMessageHandler)
return sqsReader, nil
}
func (in *s3Input) createS3Lister(ctx v2.Context, cancelCtx context.Context, client beat.Client, persistentStore *statestore.Store, states *states) (*s3Poller, error) {
s3ServiceName := awscommon.CreateServiceName("s3", in.config.AWSConfig.FIPSEnabled, in.awsConfig.Region)
var bucketName string
var bucketID string
if in.config.NonAWSBucketName != "" {
bucketName = in.config.NonAWSBucketName
bucketID = bucketName
} else if in.config.BucketARN != "" {
bucketName = getBucketNameFromARN(in.config.BucketARN)
bucketID = in.config.BucketARN
}
s3Client := s3.New(awscommon.EnrichAWSConfigWithEndpoint(in.config.AWSConfig.Endpoint, s3ServiceName, in.awsConfig.Region, in.awsConfig))
regionName, err := getRegionForBucket(cancelCtx, s3Client, bucketName)
if err != nil {
return nil, fmt.Errorf("failed to get AWS region for bucket: %w", err)
}
in.awsConfig.Region = regionName
s3Client = s3.New(awscommon.EnrichAWSConfigWithEndpoint(in.config.AWSConfig.Endpoint, s3ServiceName, in.awsConfig.Region, in.awsConfig))
s3Client.ForcePathStyle = in.config.PathStyle
s3API := &awsS3API{
client: s3Client,
}
log := ctx.Logger.With("bucket", bucketID)
log.Infof("number_of_workers is set to %v.", in.config.NumberOfWorkers)
log.Infof("bucket_list_interval is set to %v.", in.config.BucketListInterval)
log.Infof("bucket_list_prefix is set to %v.", in.config.BucketListPrefix)
log.Infof("AWS region is set to %v.", in.awsConfig.Region)
log.Debugf("AWS S3 service name is %v.", s3ServiceName)
metricRegistry := monitoring.GetNamespace("dataset").GetRegistry()
metrics := newInputMetrics(metricRegistry, ctx.ID)
fileSelectors := in.config.FileSelectors
if len(in.config.FileSelectors) == 0 {
fileSelectors = []fileSelectorConfig{{ReaderConfig: in.config.ReaderConfig}}
}
s3EventHandlerFactory := newS3ObjectProcessorFactory(log.Named("s3"), metrics, s3API, client, fileSelectors)
s3Poller := newS3Poller(log.Named("s3_poller"),
metrics,
s3API,
s3EventHandlerFactory,
states,
persistentStore,
bucketID,
in.config.BucketListPrefix,
in.awsConfig.Region,
getProviderFromDomain(in.config.AWSConfig.Endpoint, in.config.ProviderOverride),
in.config.NumberOfWorkers,
in.config.BucketListInterval)
return s3Poller, nil
}
func getRegionFromQueueURL(queueURL string, endpoint string) (string, error) {
// get region from queueURL
// Example: https://sqs.us-east-1.amazonaws.com/627959692251/test-s3-logs
url, err := url.Parse(queueURL)
if err != nil {
return "", fmt.Errorf(queueURL + " is not a valid URL")
}
if url.Scheme == "https" && url.Host != "" {
queueHostSplit := strings.Split(url.Host, ".")
if len(queueHostSplit) > 2 && (strings.Join(queueHostSplit[2:], ".") == endpoint || (endpoint == "" && queueHostSplit[2] == "amazonaws")) {
return queueHostSplit[1], nil
}
}
return "", fmt.Errorf("QueueURL is not in format: https://sqs.{REGION_ENDPOINT}.{ENDPOINT}/{ACCOUNT_NUMBER}/{QUEUE_NAME}")
}
func getRegionForBucket(ctx context.Context, s3Client *s3.Client, bucketName string) (string, error) {
req := s3Client.GetBucketLocationRequest(&s3.GetBucketLocationInput{
Bucket: awssdk.String(bucketName),
})
resp, err := req.Send(ctx)
if err != nil {
return "", err
}
return string(s3.NormalizeBucketLocation(resp.LocationConstraint)), nil
}
func getBucketNameFromARN(bucketARN string) string {
bucketMetadata := strings.Split(bucketARN, ":")
bucketName := bucketMetadata[len(bucketMetadata)-1]
return bucketName
}
func getProviderFromDomain(endpoint string, ProviderOverride string) string {
if ProviderOverride != "" {
return ProviderOverride
}
if endpoint == "" {
return "aws"
}
// List of popular S3 SaaS providers
providers := map[string]string{
"amazonaws.com": "aws",
"c2s.sgov.gov": "aws",
"c2s.ic.gov": "aws",
"amazonaws.com.cn": "aws",
"backblazeb2.com": "backblaze",
"wasabisys.com": "wasabi",
"digitaloceanspaces.com": "digitalocean",
"dream.io": "dreamhost",
"scw.cloud": "scaleway",
"googleapis.com": "gcp",
"cloud.it": "arubacloud",
"linodeobjects.com": "linode",
"vultrobjects.com": "vultr",
"appdomain.cloud": "ibm",
"aliyuncs.com": "alibaba",
"oraclecloud.com": "oracle",
"exo.io": "exoscale",
"upcloudobjects.com": "upcloud",
"ilandcloud.com": "iland",
"zadarazios.com": "zadara",
}
parsedEndpoint, _ := url.Parse(endpoint)
for key, provider := range providers {
// support endpoint with and without scheme (http(s)://abc.xyz, abc.xyz)
constraint := parsedEndpoint.Hostname()
if len(parsedEndpoint.Scheme) == 0 {
constraint = parsedEndpoint.Path
}
if strings.HasSuffix(constraint, key) {
return provider
}
}
return "unknown"
}