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endpoints_logs.go
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/
endpoints_logs.go
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package publicapi
import (
"bytes"
"context"
"encoding/json"
"io"
"net/http"
"github.com/bacalhau-project/bacalhau/pkg/bacerrors"
"github.com/bacalhau-project/bacalhau/pkg/compute/logstream"
"github.com/bacalhau-project/bacalhau/pkg/logger"
"github.com/bacalhau-project/bacalhau/pkg/model"
"github.com/bacalhau-project/bacalhau/pkg/publicapi"
"github.com/bacalhau-project/bacalhau/pkg/requester"
"github.com/bacalhau-project/bacalhau/pkg/system"
"github.com/gorilla/websocket"
"github.com/pkg/errors"
"github.com/rs/zerolog/log"
)
type logRequest = publicapi.SignedRequest[model.LogsPayload] //nolint:unused // Swagger wants this
type Msg struct {
Tag uint8
Data string
}
// logs godoc
//
// @ID pkg/requester/publicapi/logs
// @Summary Displays the logs for a current job/execution
// @Description.markdown endpoints_log
// @Tags Job
// @Accept json
// @Produce json
// @Param logRequest body logRequest true " "
// @Success 200 {object} string
// @Failure 400 {object} string
// @Failure 401 {object} string
// @Failure 403 {object} string
// @Failure 500 {object} string
// @Router /requester/logs [post]
//
//nolint:funlen,gocyclo
func (s *RequesterAPIServer) logs(res http.ResponseWriter, req *http.Request) {
var upgrader = websocket.Upgrader{}
conn, err := upgrader.Upgrade(res, req, nil)
if err != nil {
errorResponse := bacerrors.ErrorToErrorResponse(errors.Errorf("failed to upgrade websocket connection: %s", err))
http.Error(res, errorResponse, http.StatusInternalServerError)
return
}
defer conn.Close()
ctx := req.Context()
// Rather than have a request body or query parameters, we get the necessary
// information we need via the client sending a JSON message.
var srequest json.RawMessage
err = conn.ReadJSON(&srequest)
if err != nil {
errorResponse := bacerrors.ErrorToErrorResponse(errors.Errorf("error reading signed request: %s", err))
_ = conn.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseAbnormalClosure, errorResponse))
return
}
// This should not marshal badly given we just converted it from bytes
// to a signedRequest. We have to convert it back to bytes as our
// websocket connection isn't an io.Reader and so we can't ask it to
// process the signature.
buffer := bytes.NewReader(srequest)
payload, err := publicapi.UnmarshalSigned[model.LogsPayload](ctx, buffer)
if err != nil {
_ = conn.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseAbnormalClosure, "failed to decode request"))
return
}
ctx = system.AddJobIDToBaggage(ctx, payload.ClientID)
// Get the job, check it exists and check it belongs to the same client
job, err := s.jobStore.GetJob(ctx, payload.JobID)
if err != nil {
log.Ctx(ctx).Debug().Msgf("Missing job: %s", err)
_ = conn.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseAbnormalClosure, err.Error()))
return
}
// We can compare the payload's client ID against the existing job's metadata
// as we have confirmed the public key that the request was signed with matches
// the client ID the request claims.
if job.Metadata.ClientID != payload.ClientID {
log.Ctx(ctx).Debug().Msgf("Mismatched ClientIDs for logs, existing job: %s and log request: %s",
job.Metadata.ClientID, payload.ClientID)
errorResponse := bacerrors.ErrorToErrorResponse(errors.Errorf("mismatched client id: %s", payload.ClientID))
_ = conn.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseAbnormalClosure, errorResponse))
return
}
// Ask the Compute node for a multiaddr where we can connect to a log server
logRequest := requester.ReadLogsRequest{
JobID: job.ID(),
ExecutionID: payload.ExecutionID,
WithHistory: payload.WithHistory,
Follow: payload.Follow}
response, err := s.requester.ReadLogs(ctx, logRequest)
if err != nil {
errorResponse := bacerrors.ErrorToErrorResponse(errors.Errorf("read logs failure: %s", err))
_ = conn.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseAbnormalClosure, errorResponse))
return
}
if response.ExecutionComplete {
s.writeTerminatedJobOutput(ctx, conn, job.ID(), payload.ExecutionID)
return
}
client, err := logstream.NewLogStreamClient(ctx, response.Address)
if err != nil {
errorResponse := bacerrors.ErrorToErrorResponse(errors.Errorf("logstream client create failure: %s", err))
_ = conn.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseInternalServerErr, errorResponse))
return
}
defer client.Close()
err = client.Connect(ctx, payload.ExecutionID, payload.WithHistory, payload.Follow)
if err != nil {
errorResponse := bacerrors.ErrorToErrorResponse(errors.Errorf("logstream connect failure: %s", err))
_ = conn.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseInternalServerErr, errorResponse))
return
}
for {
frame, err := client.ReadDataFrame(ctx)
if err == io.EOF {
_ = conn.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""))
break
}
if err != nil {
log.Ctx(ctx).Error().Msgf("Stream read failure: %s", err)
_ = conn.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""))
break
}
err = s.writeDataFrame(ctx, conn, frame)
if err != nil {
_ = conn.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""))
break
}
}
_ = conn.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""))
}
func (s *RequesterAPIServer) writeDataFrame(ctx context.Context, conn *websocket.Conn, frame logger.DataFrame) error {
msg := Msg{
Tag: uint8(frame.Tag),
Data: string(frame.Data),
}
err := conn.WriteJSON(msg)
if err != nil {
log.Ctx(ctx).Error().Msgf("websocket write failure: %s", err)
}
return err
}
func (s *RequesterAPIServer) writeTerminatedJobOutput(
ctx context.Context,
conn *websocket.Conn,
jobID string,
executionID string) {
jobState, err := s.jobStore.GetJobState(ctx, jobID)
if err != nil {
_ = conn.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseInternalServerErr, err.Error()))
return
}
for _, exec := range jobState.Executions {
if exec.ComputeReference == executionID {
if exec.RunOutput.STDOUT != "" {
df := logger.DataFrame{
Tag: logger.StdoutStreamTag,
Size: len(exec.RunOutput.STDOUT),
Data: []byte(exec.RunOutput.STDOUT),
}
_ = s.writeDataFrame(ctx, conn, df)
}
if exec.RunOutput.STDERR != "" {
df := logger.DataFrame{
Tag: logger.StderrStreamTag,
Size: len(exec.RunOutput.STDERR),
Data: []byte(exec.RunOutput.STDERR),
}
_ = s.writeDataFrame(ctx, conn, df)
}
}
}
_ = conn.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""))
}