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handler.go
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handler.go
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// Copyright Project Harbor Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package api
import (
"encoding/json"
"io/ioutil"
"net/http"
"os"
"strings"
"github.com/gorilla/mux"
"fmt"
"github.com/goharbor/harbor/src/jobservice/common/query"
"github.com/goharbor/harbor/src/jobservice/common/utils"
"github.com/goharbor/harbor/src/jobservice/core"
"github.com/goharbor/harbor/src/jobservice/errs"
"github.com/goharbor/harbor/src/jobservice/job"
"github.com/goharbor/harbor/src/jobservice/logger"
"github.com/pkg/errors"
"strconv"
)
const (
totalHeaderKey = "Total-Count"
nextCursorKey = "Next-Cursor"
)
// Handler defines approaches to handle the http requests.
type Handler interface {
// HandleLaunchJobReq is used to handle the job submission request.
HandleLaunchJobReq(w http.ResponseWriter, req *http.Request)
// HandleGetJobReq is used to handle the job stats query request.
HandleGetJobReq(w http.ResponseWriter, req *http.Request)
// HandleJobActionReq is used to handle the job action requests (stop/retry).
HandleJobActionReq(w http.ResponseWriter, req *http.Request)
// HandleCheckStatusReq is used to handle the job service healthy status checking request.
HandleCheckStatusReq(w http.ResponseWriter, req *http.Request)
// HandleJobLogReq is used to handle the request of getting job logs
HandleJobLogReq(w http.ResponseWriter, req *http.Request)
// HandleJobLogReq is used to handle the request of getting periodic executions
HandlePeriodicExecutions(w http.ResponseWriter, req *http.Request)
// HandleGetJobsReq is used to handle the request of getting jobs
HandleGetJobsReq(w http.ResponseWriter, req *http.Request)
}
// DefaultHandler is the default request handler which implements the Handler interface.
type DefaultHandler struct {
controller core.Interface
}
// NewDefaultHandler is constructor of DefaultHandler.
func NewDefaultHandler(ctl core.Interface) *DefaultHandler {
return &DefaultHandler{
controller: ctl,
}
}
// HandleLaunchJobReq is implementation of method defined in interface 'Handler'
func (dh *DefaultHandler) HandleLaunchJobReq(w http.ResponseWriter, req *http.Request) {
data, err := ioutil.ReadAll(req.Body)
if err != nil {
dh.handleError(w, req, http.StatusInternalServerError, errs.ReadRequestBodyError(err))
return
}
// unmarshal data
jobReq := &job.Request{}
if err = json.Unmarshal(data, jobReq); err != nil {
dh.handleError(w, req, http.StatusInternalServerError, errs.HandleJSONDataError(err))
return
}
// Pass request to the controller for the follow-up.
jobStats, err := dh.controller.LaunchJob(jobReq)
if err != nil {
code := http.StatusInternalServerError
if errs.IsBadRequestError(err) {
// Bad request
code = http.StatusBadRequest
} else if errs.IsConflictError(err) {
// Conflict error
code = http.StatusConflict
} else {
// General error
err = errs.LaunchJobError(err)
}
dh.handleError(w, req, code, err)
return
}
dh.handleJSONData(w, req, http.StatusAccepted, jobStats)
}
// HandleGetJobReq is implementation of method defined in interface 'Handler'
func (dh *DefaultHandler) HandleGetJobReq(w http.ResponseWriter, req *http.Request) {
vars := mux.Vars(req)
jobID := vars["job_id"]
jobStats, err := dh.controller.GetJob(jobID)
if err != nil {
code := http.StatusInternalServerError
if errs.IsObjectNotFoundError(err) {
code = http.StatusNotFound
} else if errs.IsBadRequestError(err) {
code = http.StatusBadRequest
} else {
err = errs.GetJobStatsError(err)
}
dh.handleError(w, req, code, err)
return
}
dh.handleJSONData(w, req, http.StatusOK, jobStats)
}
// HandleJobActionReq is implementation of method defined in interface 'Handler'
func (dh *DefaultHandler) HandleJobActionReq(w http.ResponseWriter, req *http.Request) {
vars := mux.Vars(req)
jobID := vars["job_id"]
data, err := ioutil.ReadAll(req.Body)
if err != nil {
dh.handleError(w, req, http.StatusInternalServerError, errs.ReadRequestBodyError(err))
return
}
// unmarshal data
jobActionReq := &job.ActionRequest{}
if err = json.Unmarshal(data, jobActionReq); err != nil {
dh.handleError(w, req, http.StatusInternalServerError, errs.HandleJSONDataError(err))
return
}
// Only support stop command now
cmd := job.OPCommand(jobActionReq.Action)
if !cmd.IsStop() {
dh.handleError(w, req, http.StatusNotImplemented, errs.UnknownActionNameError(errors.Errorf("command: %s", jobActionReq.Action)))
return
}
// Stop job
if err := dh.controller.StopJob(jobID); err != nil {
code := http.StatusInternalServerError
if errs.IsObjectNotFoundError(err) {
code = http.StatusNotFound
} else if errs.IsBadRequestError(err) {
code = http.StatusBadRequest
} else {
err = errs.StopJobError(err)
}
dh.handleError(w, req, code, err)
return
}
dh.log(req, http.StatusNoContent, string(data))
w.WriteHeader(http.StatusNoContent) // only header, no content returned
}
// HandleCheckStatusReq is implementation of method defined in interface 'Handler'
func (dh *DefaultHandler) HandleCheckStatusReq(w http.ResponseWriter, req *http.Request) {
stats, err := dh.controller.CheckStatus()
if err != nil {
dh.handleError(w, req, http.StatusInternalServerError, errs.CheckStatsError(err))
return
}
dh.handleJSONData(w, req, http.StatusOK, stats)
}
// HandleJobLogReq is implementation of method defined in interface 'Handler'
func (dh *DefaultHandler) HandleJobLogReq(w http.ResponseWriter, req *http.Request) {
vars := mux.Vars(req)
jobID := vars["job_id"]
if strings.Contains(jobID, "..") || strings.ContainsRune(jobID, os.PathSeparator) {
dh.handleError(w, req, http.StatusBadRequest, errors.Errorf("invalid Job ID: %s", jobID))
return
}
logData, err := dh.controller.GetJobLogData(jobID)
if err != nil {
code := http.StatusInternalServerError
if errs.IsObjectNotFoundError(err) {
code = http.StatusNotFound
} else if errs.IsBadRequestError(err) {
code = http.StatusBadRequest
} else {
err = errs.GetJobLogError(err)
}
dh.handleError(w, req, code, err)
return
}
dh.log(req, http.StatusOK, "")
w.WriteHeader(http.StatusOK)
writeDate(w, logData)
}
// HandlePeriodicExecutions is implementation of method defined in interface 'Handler'
func (dh *DefaultHandler) HandlePeriodicExecutions(w http.ResponseWriter, req *http.Request) {
// Get param
vars := mux.Vars(req)
jobID := vars["job_id"]
// Get query params
q := extractQuery(req)
executions, total, err := dh.controller.GetPeriodicExecutions(jobID, q)
if err != nil {
code := http.StatusInternalServerError
if errs.IsObjectNotFoundError(err) {
code = http.StatusNotFound
} else if errs.IsBadRequestError(err) {
code = http.StatusBadRequest
} else {
err = errs.GetPeriodicExecutionError(err)
}
dh.handleError(w, req, code, err)
return
}
w.Header().Add(totalHeaderKey, fmt.Sprintf("%d", total))
dh.handleJSONData(w, req, http.StatusOK, executions)
}
// HandleGetJobsReq is implementation of method defined in interface 'Handler'
func (dh *DefaultHandler) HandleGetJobsReq(w http.ResponseWriter, req *http.Request) {
// Get query parameters
q := extractQuery(req)
jobs, total, err := dh.controller.GetJobs(q)
if err != nil {
dh.handleError(w, req, http.StatusInternalServerError, errs.GetJobsError(q, err))
return
}
key := nextCursorKey
if v, ok := q.Extras.Get(query.ExtraParamKeyKind); ok {
if kind, yes := v.(string); yes && kind == job.KindScheduled {
key = totalHeaderKey
}
}
w.Header().Add(key, fmt.Sprintf("%d", total))
dh.handleJSONData(w, req, http.StatusOK, jobs)
}
func (dh *DefaultHandler) handleJSONData(w http.ResponseWriter, req *http.Request, code int, object interface{}) {
data, err := json.Marshal(object)
if err != nil {
dh.handleError(w, req, http.StatusInternalServerError, errs.HandleJSONDataError(err))
return
}
logger.Debugf("Serve http request '%s %s': %d %s", req.Method, req.URL.String(), code, data)
w.Header().Set(http.CanonicalHeaderKey("Accept"), "application/json")
w.Header().Set(http.CanonicalHeaderKey("content-type"), "application/json")
w.WriteHeader(code)
writeDate(w, data)
}
func (dh *DefaultHandler) handleError(w http.ResponseWriter, req *http.Request, code int, err error) {
// Log all errors
logger.Errorf("Serve http request '%s %s' error: %d %s", req.Method, req.URL.String(), code, err.Error())
w.WriteHeader(code)
writeDate(w, []byte(err.Error()))
}
func (dh *DefaultHandler) log(req *http.Request, code int, text string) {
logger.Debugf("Serve http request '%s %s': %d %s", req.Method, req.URL.String(), code, text)
}
func extractQuery(req *http.Request) *query.Parameter {
q := &query.Parameter{
PageNumber: 1,
PageSize: query.DefaultPageSize,
Extras: make(query.ExtraParameters),
}
queries := req.URL.Query()
// Page number
p := queries.Get(query.ParamKeyPage)
if !utils.IsEmptyStr(p) {
if pv, err := strconv.ParseUint(p, 10, 32); err == nil {
if pv > 1 {
q.PageNumber = uint(pv)
}
}
}
// Page number
size := queries.Get(query.ParamKeyPageSize)
if !utils.IsEmptyStr(size) {
if pz, err := strconv.ParseUint(size, 10, 32); err == nil {
if pz > 0 {
q.PageSize = uint(pz)
}
}
}
// Extra query parameters
nonStoppedOnly := queries.Get(query.ParamKeyNonStoppedOnly)
if !utils.IsEmptyStr(nonStoppedOnly) {
if nonStoppedOnlyV, err := strconv.ParseBool(nonStoppedOnly); err == nil {
q.Extras.Set(query.ExtraParamKeyNonStoppedOnly, nonStoppedOnlyV)
}
}
// Extra job kind query param
jobKind := queries.Get(query.ParamKeyJobKind)
if !utils.IsEmptyStr(jobKind) {
q.Extras.Set(query.ExtraParamKeyKind, jobKind)
}
// Extra query cursor
cursorV := queries.Get(query.ParamKeyCursor)
if !utils.IsEmptyStr(cursorV) {
if cursor, err := strconv.ParseInt(cursorV, 10, 32); err == nil {
q.Extras.Set(query.ExtraParamKeyCursor, cursor)
}
}
return q
}
func writeDate(w http.ResponseWriter, bytes []byte) {
if _, err := w.Write(bytes); err != nil {
logger.Errorf("writer write error: %s", err)
}
}