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log.go
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log.go
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package wsHandler
import (
"errors"
"fmt"
"strings"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/service/cloudwatchlogs"
"github.com/pixlise/core/v4/api/services"
"github.com/pixlise/core/v4/api/ws/wsHelpers"
"github.com/pixlise/core/v4/core/awsutil"
"github.com/pixlise/core/v4/core/errorwithstatus"
"github.com/pixlise/core/v4/core/logger"
protos "github.com/pixlise/core/v4/generated-protos"
)
func HandleLogReadReq(req *protos.LogReadReq, hctx wsHelpers.HandlerContext) (*protos.LogReadResp, error) {
if err := wsHelpers.CheckStringField(&req.LogStreamId, "LogStreamId", 1, 512); err != nil {
return nil, err
}
// We now just send the AWS cloudwatch log group+stream id out, so expect this to be directly accessible
bits := strings.Split(req.LogStreamId, "/|/")
if len(bits) != 2 {
return nil, errors.New("Failed to get log group and stream from: " + req.LogStreamId)
}
logs, err := fetchLogs(hctx.Svcs, bits[0], bits[1])
if aerr, ok := err.(awserr.Error); ok {
if aerr.Code() == cloudwatchlogs.ErrCodeResourceNotFoundException {
return nil, errorwithstatus.MakeNotFoundError(req.LogStreamId)
}
}
return &protos.LogReadResp{
Entries: logs,
}, nil
}
func HandleLogGetLevelReq(req *protos.LogGetLevelReq, hctx wsHelpers.HandlerContext) (*protos.LogGetLevelResp, error) {
name, err := logger.GetLogLevelName(hctx.Svcs.Log.GetLogLevel())
if err != nil {
return nil, err
}
return &protos.LogGetLevelResp{
LogLevelId: name,
}, nil
}
func HandleLogSetLevelReq(req *protos.LogSetLevelReq, hctx wsHelpers.HandlerContext) (*protos.LogSetLevelResp, error) {
if err := wsHelpers.CheckStringField(&req.LogLevelId, "LogLevelId", 1, 10); err != nil {
return nil, err
}
logLevel, err := logger.GetLogLevel(req.LogLevelId)
if err != nil {
return nil, errorwithstatus.MakeBadRequestError(err)
}
// Also set it on the actual logger
hctx.Svcs.Log.SetLogLevel(logLevel)
// Not really an error, but we log in this level to ensure it always gets printed
hctx.Svcs.Log.Errorf("User %v request changed log level to: %v", hctx.SessUser.User.Id, req.LogLevelId)
return &protos.LogSetLevelResp{LogLevelId: req.LogLevelId}, nil
}
var cloudwatchSvc *cloudwatchlogs.CloudWatchLogs = nil
func fetchLogs(services *services.APIServices, logGroupName string, logStreamName string) ([]*protos.LogLine, error) {
var limit int64 = 10000
result := []*protos.LogLine{}
if cloudwatchSvc == nil {
sess, err := awsutil.GetSession()
if err != nil {
return result, fmt.Errorf("Failed to create AWS session. Error: %v", err)
}
// NOTE: previously here we used a session: AWSSessionCW which could be configured to a different region... don't know why
// this was required but seemed redundant, it was in the same region lately...
cloudwatchSvc = cloudwatchlogs.New(sess)
}
if cloudwatchSvc == nil {
return result, fmt.Errorf("No connection to cloudwatch")
}
resp, err := cloudwatchSvc.GetLogEvents(&cloudwatchlogs.GetLogEventsInput{
Limit: &limit,
LogGroupName: aws.String(logGroupName),
LogStreamName: aws.String(logStreamName),
})
if err != nil {
//log.Errorf("Got error getting log events: %v", err)
return result, err
}
for _, event := range resp.Events {
result = append(result, &protos.LogLine{
// Split it up, we don't like sending uint64 via proto because deserialisation to JS turns to shit
TimeStampUnixSec: uint32(*event.IngestionTime / 1000),
TimeStampMs: uint32(*event.IngestionTime % 1000),
Message: *event.Message,
})
}
return result, nil
}