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Merged
merged 1 commit into from
Mar 28, 2018
Merged

Add AppEngine Standard credentials to auth sample. #1075

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5 changes: 5 additions & 0 deletions auth/pom.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,11 @@ limitations under the License.
<artifactId>google-cloud-storage</artifactId>
<version>1.14.0</version>
</dependency>
<dependency>
<groupId>com.google.auth</groupId>
<artifactId>google-auth-library-appengine</artifactId>
<version>0.9.0</version>
</dependency>
<!-- END dependencies -->
<dependency>
<groupId>commons-io</groupId>
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24 changes: 21 additions & 3 deletions auth/src/main/java/com/google/cloud/auth/samples/AuthExample.java
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Expand Up @@ -18,11 +18,11 @@

import com.google.api.gax.paging.Page;
import com.google.auth.oauth2.ComputeEngineCredentials;
import com.google.auth.appengine.AppEngineCredentials;
import com.google.auth.oauth2.GoogleCredentials;
import com.google.cloud.storage.Bucket;
import com.google.cloud.storage.Storage;
import com.google.cloud.storage.StorageOptions;
import com.google.common.base.Strings;
import com.google.common.collect.Lists;

import java.io.FileInputStream;
Expand Down Expand Up @@ -63,7 +63,7 @@ static void authExplicit(String jsonPath) throws IOException {
// [END auth_cloud_explicit]

// [START auth_cloud_explicit_compute_engine]
static void authComputeExplicit() {
static void authCompute() {
// Explicitly request service account credentials from the compute engine instance.
GoogleCredentials credentials = ComputeEngineCredentials.create();
Storage storage = StorageOptions.newBuilder().setCredentials(credentials).build().getService();
Expand All @@ -76,6 +76,20 @@ static void authComputeExplicit() {
}
// [END auth_cloud_explicit_compute_engine]

// [START auth_cloud_explicit_app_engine]
static void authAppEngineStandard() throws IOException {
// Explicitly request service account credentials from the app engine standard instance.
GoogleCredentials credentials = AppEngineCredentials.getApplicationDefault();
Storage storage = StorageOptions.newBuilder().setCredentials(credentials).build().getService();

System.out.println("Buckets:");
Page<Bucket> buckets = storage.list();
for (Bucket bucket : buckets.iterateAll()) {
System.out.println(bucket.toString());
}
}
// [END auth_cloud_explicit_app_engine]

public static void main(String[] args) throws IOException {
if (args.length == 0) {
authImplicit();
Expand All @@ -90,7 +104,11 @@ public static void main(String[] args) throws IOException {
return;
}
if ("compute".equals(args[0])) {
authComputeExplicit();
authCompute();
return;
}
if ("appengine".equals(args[0])) {
authAppEngineStandard();
return;
}
authImplicit();
Expand Down