github.com/google/cloudprober@v0.11.3/prober/serviceimpl.go (about)

     1  // Copyright 2019 The Cloudprober Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package prober
    16  
    17  import (
    18  	"context"
    19  
    20  	pb "github.com/google/cloudprober/prober/proto"
    21  	"google.golang.org/grpc/codes"
    22  	"google.golang.org/grpc/status"
    23  	"google.golang.org/protobuf/proto"
    24  )
    25  
    26  // AddProbe adds the given probe to cloudprober.
    27  func (pr *Prober) AddProbe(ctx context.Context, req *pb.AddProbeRequest) (*pb.AddProbeResponse, error) {
    28  	p := req.GetProbeConfig()
    29  
    30  	if p == nil {
    31  		return &pb.AddProbeResponse{}, status.Errorf(codes.InvalidArgument, "probe config cannot be nil")
    32  	}
    33  
    34  	if err := pr.addProbe(p); err != nil {
    35  		return &pb.AddProbeResponse{}, err
    36  	}
    37  
    38  	// Send probe to the start probe channel to be started by a goroutine started
    39  	// at the prober start time.
    40  	pr.grpcStartProbeCh <- p.GetName()
    41  
    42  	return &pb.AddProbeResponse{}, nil
    43  }
    44  
    45  // RemoveProbe gRPC method cancels the given probe and removes its from the
    46  // prober's internal database.
    47  func (pr *Prober) RemoveProbe(ctx context.Context, req *pb.RemoveProbeRequest) (*pb.RemoveProbeResponse, error) {
    48  	pr.mu.Lock()
    49  	defer pr.mu.Unlock()
    50  
    51  	name := req.GetProbeName()
    52  
    53  	if name == "" {
    54  		return &pb.RemoveProbeResponse{}, status.Errorf(codes.InvalidArgument, "probe name cannot be empty")
    55  	}
    56  
    57  	if pr.Probes[name] == nil {
    58  		return &pb.RemoveProbeResponse{}, status.Errorf(codes.NotFound, "probe %s not found", name)
    59  	}
    60  
    61  	pr.probeCancelFunc[name]()
    62  	delete(pr.Probes, name)
    63  
    64  	return &pb.RemoveProbeResponse{}, nil
    65  }
    66  
    67  // ListProbes gRPC method returns the list of probes from the in-memory database.
    68  func (pr *Prober) ListProbes(ctx context.Context, req *pb.ListProbesRequest) (*pb.ListProbesResponse, error) {
    69  	pr.mu.Lock()
    70  	defer pr.mu.Unlock()
    71  
    72  	resp := &pb.ListProbesResponse{}
    73  
    74  	for name, p := range pr.Probes {
    75  		resp.Probe = append(resp.Probe, &pb.Probe{
    76  			Name:   proto.String(name),
    77  			Config: p.ProbeDef,
    78  		})
    79  	}
    80  
    81  	return resp, nil
    82  }