77 lines
1.8 KiB
Go
77 lines
1.8 KiB
Go
// Copyright 2016 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package rkt
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import (
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"fmt"
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"net"
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"sync"
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"time"
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rktapi "github.com/coreos/rkt/api/v1alpha"
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"golang.org/x/net/context"
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"google.golang.org/grpc"
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)
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const (
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defaultRktAPIServiceAddr = "localhost:15441"
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timeout = 2 * time.Second
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)
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var (
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rktClient rktapi.PublicAPIClient
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rktClientErr error
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once sync.Once
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)
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func Client() (rktapi.PublicAPIClient, error) {
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once.Do(func() {
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conn, err := net.DialTimeout("tcp", defaultRktAPIServiceAddr, timeout)
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if err != nil {
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rktClient = nil
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rktClientErr = fmt.Errorf("rkt: cannot tcp Dial rkt api service: %v", err)
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return
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}
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conn.Close()
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apisvcConn, err := grpc.Dial(defaultRktAPIServiceAddr, grpc.WithInsecure(), grpc.WithTimeout(timeout))
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if err != nil {
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rktClient = nil
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rktClientErr = fmt.Errorf("rkt: cannot grpc Dial rkt api service: %v", err)
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return
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}
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rktClient = rktapi.NewPublicAPIClient(apisvcConn)
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})
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return rktClient, rktClientErr
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}
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func RktPath() (string, error) {
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client, err := Client()
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if err != nil {
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return "", err
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}
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resp, err := client.GetInfo(context.Background(), &rktapi.GetInfoRequest{})
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if err != nil {
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return "", fmt.Errorf("couldn't GetInfo from rkt api service: %v", err)
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}
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return resp.Info.GlobalFlags.Dir, nil
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}
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