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// Copyright 2022 Google LLC | ||
// | ||
// 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. | ||
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package gcloud | ||
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import ( | ||
"bytes" | ||
"encoding/json" | ||
"fmt" | ||
"runtime" | ||
"time" | ||
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"golang.org/x/oauth2" | ||
exec "golang.org/x/sys/execabs" | ||
) | ||
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// config represents the credentials returned by `gcloud config config-helper`. | ||
type config struct { | ||
Credential struct { | ||
AccessToken string `json:"access_token"` | ||
TokenExpiry time.Time `json:"token_expiry"` | ||
} | ||
} | ||
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func (c *config) Token() *oauth2.Token { | ||
return &oauth2.Token{ | ||
AccessToken: c.Credential.AccessToken, | ||
Expiry: c.Credential.TokenExpiry, | ||
} | ||
} | ||
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// Path returns the absolute path to the gcloud command. If the command is not | ||
// found it returns an error. | ||
func Path() (string, error) { | ||
g := "gcloud" | ||
if runtime.GOOS == "windows" { | ||
g = g + ".cmd" | ||
} | ||
return exec.LookPath(g) | ||
} | ||
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// configHelper implements oauth2.TokenSource via the `gcloud config config-helper` command. | ||
type configHelper struct{} | ||
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// Token helps gcloudTokenSource implement oauth2.TokenSource. | ||
func (configHelper) Token() (*oauth2.Token, error) { | ||
gcloudCmd, err := Path() | ||
if err != nil { | ||
return nil, err | ||
} | ||
buf, errbuf := new(bytes.Buffer), new(bytes.Buffer) | ||
cmd := exec.Command(gcloudCmd, "--format", "json", "config", "config-helper", "--min-expiry", "1h") | ||
cmd.Stdout = buf | ||
cmd.Stderr = errbuf | ||
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if err := cmd.Run(); err != nil { | ||
err = fmt.Errorf("error reading config: %v; stderr was:\n%v", err, errbuf) | ||
return nil, err | ||
} | ||
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c := &config{} | ||
if err := json.Unmarshal(buf.Bytes(), c); err != nil { | ||
return nil, err | ||
} | ||
return c.Token(), nil | ||
} | ||
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// TokenSource returns an oauth2.TokenSource backed by the gcloud CLI. | ||
func TokenSource() (oauth2.TokenSource, error) { | ||
h := configHelper{} | ||
tok, err := h.Token() | ||
if err != nil { | ||
return nil, err | ||
} | ||
return oauth2.ReuseTokenSource(tok, h), nil | ||
} |
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// Copyright 2022 Google LLC | ||
// | ||
// 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. | ||
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package gcloud_test | ||
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import ( | ||
"testing" | ||
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"github.com/GoogleCloudPlatform/alloydb-auth-proxy/internal/gcloud" | ||
) | ||
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func TestGcloud(t *testing.T) { | ||
if testing.Short() { | ||
t.Skip("skipping gcloud integration tests") | ||
} | ||
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// gcloud is now configured. Try to obtain a token from gcloud config | ||
// helper. | ||
ts, err := gcloud.TokenSource() | ||
if err != nil { | ||
t.Fatalf("failed to get token source: %v", err) | ||
} | ||
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_, err = ts.Token() | ||
if err != nil { | ||
t.Fatalf("failed to get token: %v", err) | ||
} | ||
} |
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