com.google.api.gax.core.GoogleCredentialsProvider Maven / Gradle / Ivy
/*
* Copyright 2016 Google LLC
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google LLC nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.google.api.gax.core;
import com.google.api.core.BetaApi;
import com.google.auth.Credentials;
import com.google.auth.oauth2.GoogleCredentials;
import com.google.auth.oauth2.ServiceAccountCredentials;
import com.google.auth.oauth2.ServiceAccountJwtAccessCredentials;
import com.google.auto.value.AutoValue;
import com.google.common.collect.ImmutableList;
import java.io.IOException;
import java.util.List;
/**
* GoogleCredentialsProvider acquires credentials using Application Default Credentials.
*
* For more information on Application Default Credentials, see
* https://developers.google.com/identity/protocols/application-default-credentials.
*/
@AutoValue
public abstract class GoogleCredentialsProvider implements CredentialsProvider {
public abstract List getScopesToApply();
@BetaApi
public abstract List getJwtEnabledScopes();
@Override
public Credentials getCredentials() throws IOException {
GoogleCredentials credentials = GoogleCredentials.getApplicationDefault();
// Check if the current scopes permit JWT token use
boolean hasJwtEnabledScope = false;
for (String scope : getJwtEnabledScopes()) {
if (getScopesToApply().contains(scope)) {
hasJwtEnabledScope = true;
break;
}
}
// Use JWT tokens when using a service account with an appropriate scope.
if (credentials instanceof ServiceAccountCredentials && hasJwtEnabledScope) {
ServiceAccountCredentials serviceAccount = (ServiceAccountCredentials) credentials;
return ServiceAccountJwtAccessCredentials.newBuilder()
.setClientEmail(serviceAccount.getClientEmail())
.setClientId(serviceAccount.getClientId())
.setPrivateKey(serviceAccount.getPrivateKey())
.setPrivateKeyId(serviceAccount.getPrivateKeyId())
.build();
}
if (credentials.createScopedRequired()) {
credentials = credentials.createScoped(getScopesToApply());
}
return credentials;
}
public static Builder newBuilder() {
return new AutoValue_GoogleCredentialsProvider.Builder()
.setJwtEnabledScopes(ImmutableList.of());
}
public abstract Builder toBuilder();
@BetaApi
@AutoValue.Builder
public abstract static class Builder {
/**
* Sets the scopes to apply to the credentials that are acquired from Application Default
* Credentials, before the credentials are sent to the service.
*/
public abstract Builder setScopesToApply(List val);
/** The scopes previously provided. */
public abstract List getScopesToApply();
/**
* Sets the scopes that are compatible with JWT tokens.
*
* JWT Tokens don't support scopes, they only support audiences. Audiences allow access to
* the entire service as opposed some subset (ie. access can't be restricted to use the scope
* {@code https://www.googleapis.com/auth/bigtable.data.readonly}). A service client can opt-in
* to using JWT tokens by specifying which scopes encompass the entire service. If any of those
* scopes are present when the client is using {@link ServiceAccountCredentials}, then JWT
* tokens will be used for authentication.
*/
@BetaApi
public abstract Builder setJwtEnabledScopes(List val);
/** The JWT enable scopes previously provided. */
@BetaApi
public abstract List getJwtEnabledScopes();
public GoogleCredentialsProvider build() {
setScopesToApply(ImmutableList.copyOf(getScopesToApply()));
setJwtEnabledScopes(ImmutableList.copyOf(getJwtEnabledScopes()));
return autoBuild();
}
abstract GoogleCredentialsProvider autoBuild();
}
}