jp.classmethod.aws.gradle.AwsPluginExtension.java Source code

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Here is the source code for jp.classmethod.aws.gradle.AwsPluginExtension.java

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/*
 * Copyright 2015-2016 the original author or authors.
 *
 * 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.
 */
package jp.classmethod.aws.gradle;

import java.lang.reflect.Constructor;
import java.util.ArrayList;
import java.util.List;

import lombok.Getter;
import lombok.RequiredArgsConstructor;
import lombok.Setter;

import org.gradle.api.GradleException;
import org.gradle.api.Project;

import com.amazonaws.AmazonWebServiceClient;
import com.amazonaws.ClientConfiguration;
import com.amazonaws.auth.AWSCredentialsProvider;
import com.amazonaws.auth.AWSCredentialsProviderChain;
import com.amazonaws.auth.DefaultAWSCredentialsProviderChain;
import com.amazonaws.auth.EC2ContainerCredentialsProviderWrapper;
import com.amazonaws.auth.EnvironmentVariableCredentialsProvider;
import com.amazonaws.auth.SystemPropertiesCredentialsProvider;
import com.amazonaws.auth.profile.ProfileCredentialsProvider;
import com.amazonaws.regions.Region;
import com.amazonaws.regions.RegionUtils;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.securitytoken.AWSSecurityTokenService;
import com.amazonaws.services.securitytoken.AWSSecurityTokenServiceClient;
import com.amazonaws.services.securitytoken.model.GetCallerIdentityRequest;
import com.google.common.base.Strings;

@RequiredArgsConstructor
public class AwsPluginExtension {

    public static final String NAME = "aws";

    @Getter
    private final Project project;

    @Getter
    @Setter
    private String profileName;

    @Getter
    @Setter
    private String region = Regions.US_EAST_1.getName();

    @Setter
    private String proxyHost;

    @Setter
    private int proxyPort = -1;

    @Setter
    private AWSCredentialsProvider credentialsProvider;

    public AWSCredentialsProvider newCredentialsProvider(String profileName) {
        if (credentialsProvider != null) {
            return credentialsProvider;
        }
        String profileNameToUse = profileName != null ? profileName : this.profileName;
        if (Strings.isNullOrEmpty(profileNameToUse) == false) {
            List<AWSCredentialsProvider> providers = new ArrayList<AWSCredentialsProvider>();
            providers.add(new EnvironmentVariableCredentialsProvider());
            providers.add(new SystemPropertiesCredentialsProvider());
            providers.add(new ProfileCredentialsProvider(profileNameToUse));
            providers.add(new EC2ContainerCredentialsProviderWrapper());
            return new AWSCredentialsProviderChain(providers);
        }
        return DefaultAWSCredentialsProviderChain.getInstance();
    }

    public <T extends AmazonWebServiceClient> T createClient(Class<T> serviceClass, String profileName) {
        return createClient(serviceClass, profileName, null);
    }

    public <T extends AmazonWebServiceClient> T createClient(Class<T> serviceClass, String profileName,
            ClientConfiguration config) {
        AWSCredentialsProvider credentialsProvider = newCredentialsProvider(profileName);
        ClientConfiguration configToUse = config == null ? new ClientConfiguration() : config;
        if (this.proxyHost != null && this.proxyPort > 0) {
            configToUse.setProxyHost(this.proxyHost);
            configToUse.setProxyPort(this.proxyPort);
        }
        return createClient(serviceClass, credentialsProvider, configToUse);
    }

    private static <T extends AmazonWebServiceClient> T createClient(Class<T> serviceClass,
            AWSCredentialsProvider credentials, ClientConfiguration config) {
        Constructor<T> constructor;
        T client;
        try {
            if (credentials == null && config == null) {
                constructor = serviceClass.getConstructor();
                client = constructor.newInstance();
            } else if (credentials == null) {
                constructor = serviceClass.getConstructor(ClientConfiguration.class);
                client = constructor.newInstance(config);
            } else if (config == null) {
                constructor = serviceClass.getConstructor(AWSCredentialsProvider.class);
                client = constructor.newInstance(credentials);
            } else {
                constructor = serviceClass.getConstructor(AWSCredentialsProvider.class, ClientConfiguration.class);
                client = constructor.newInstance(credentials, config);
            }

            return client;
        } catch (ReflectiveOperationException e) {
            throw new GradleException("Couldn't instantiate instance of " + serviceClass, e);
        }
    }

    public Region getActiveRegion(String clientRegion) {
        if (clientRegion != null) {
            return RegionUtils.getRegion(clientRegion);
        }
        if (this.region == null) {
            throw new IllegalStateException("default region is null");
        }
        return RegionUtils.getRegion(region);
    }

    public String getActiveProfileName(String clientProfileName) {
        if (clientProfileName != null) {
            return clientProfileName;
        }
        if (this.profileName == null) {
            throw new IllegalStateException("default profileName is null");
        }
        return profileName;
    }

    public String getAccountId() {
        AWSSecurityTokenService sts = createClient(AWSSecurityTokenServiceClient.class, profileName);
        return sts.getCallerIdentity(new GetCallerIdentityRequest()).getAccount();
    }

    public String getUserArn() {
        AWSSecurityTokenService sts = createClient(AWSSecurityTokenServiceClient.class, profileName);
        return sts.getCallerIdentity(new GetCallerIdentityRequest()).getArn();
    }
}