github.com/m3db/m3@v1.5.0/src/query/api/v1/handler/topic/delete.go (about)

     1  // Copyright (c) 2019 Uber Technologies, Inc.
     2  //
     3  // Permission is hereby granted, free of charge, to any person obtaining a copy
     4  // of this software and associated documentation files (the "Software"), to deal
     5  // in the Software without restriction, including without limitation the rights
     6  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     7  // copies of the Software, and to permit persons to whom the Software is
     8  // furnished to do so, subject to the following conditions:
     9  //
    10  // The above copyright notice and this permission notice shall be included in
    11  // all copies or substantial portions of the Software.
    12  //
    13  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    14  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    15  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    16  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    17  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    18  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    19  // THE SOFTWARE.
    20  
    21  package topic
    22  
    23  import (
    24  	"fmt"
    25  	"net/http"
    26  
    27  	clusterclient "github.com/m3db/m3/src/cluster/client"
    28  	"github.com/m3db/m3/src/cluster/kv"
    29  	"github.com/m3db/m3/src/cluster/placementhandler/handleroptions"
    30  	"github.com/m3db/m3/src/cmd/services/m3query/config"
    31  	"github.com/m3db/m3/src/query/api/v1/route"
    32  	"github.com/m3db/m3/src/query/util/logging"
    33  	xerrors "github.com/m3db/m3/src/x/errors"
    34  	"github.com/m3db/m3/src/x/instrument"
    35  	xhttp "github.com/m3db/m3/src/x/net/http"
    36  
    37  	"go.uber.org/zap"
    38  )
    39  
    40  const (
    41  	// DeleteURL is the url for the topic delete handler (with the DELETE method).
    42  	DeleteURL = route.Prefix + "/topic"
    43  
    44  	// DeleteHTTPMethod is the HTTP method used with this resource.
    45  	DeleteHTTPMethod = http.MethodDelete
    46  )
    47  
    48  // DeleteHandler is the handler for topic adds.
    49  type DeleteHandler Handler
    50  
    51  // newDeleteHandler returns a new instance of DeleteHandler.
    52  func newDeleteHandler(
    53  	client clusterclient.Client,
    54  	cfg config.Configuration,
    55  	instrumentOpts instrument.Options,
    56  ) http.Handler {
    57  	return &DeleteHandler{
    58  		client:         client,
    59  		cfg:            cfg,
    60  		serviceFn:      Service,
    61  		instrumentOpts: instrumentOpts,
    62  	}
    63  }
    64  
    65  func (h *DeleteHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
    66  	var (
    67  		ctx    = r.Context()
    68  		logger = logging.WithContext(ctx, h.instrumentOpts)
    69  	)
    70  
    71  	serviceCfg := handleroptions.ServiceNameAndDefaults{}
    72  	svcOpts := handleroptions.NewServiceOptions(serviceCfg, r.Header, nil)
    73  	service, err := h.serviceFn(h.client, svcOpts)
    74  	if err != nil {
    75  		logger.Error("unable to get service", zap.Error(err))
    76  		xhttp.WriteError(w, err)
    77  		return
    78  	}
    79  
    80  	name := topicName(r.Header)
    81  	svcLogger := logger.With(zap.String("service", name))
    82  	if err := service.Delete(name); err != nil {
    83  		svcLogger.Error("unable to delete service", zap.Error(err))
    84  		if err == kv.ErrNotFound {
    85  			err = xerrors.NewInvalidParamsError(err)
    86  		}
    87  		err := xerrors.NewRenamedError(err,
    88  			fmt.Errorf("error deleting service '%s': %v", name, err))
    89  		xhttp.WriteError(w, err)
    90  		return
    91  	}
    92  
    93  	svcLogger.Info("deleted service")
    94  	// This is technically not necessary but we prefer to be verbose in handler
    95  	// logic.
    96  	w.WriteHeader(http.StatusOK)
    97  }