com.epam.dlab.auth.aws.service.AwsCredentialRefreshService.java Source code

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Here is the source code for com.epam.dlab.auth.aws.service.AwsCredentialRefreshService.java

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/*
 * Copyright (c) 2018, EPAM SYSTEMS INC
 *
 * 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 com.epam.dlab.auth.aws.service;

import com.amazonaws.auth.AWSCredentialsProvider;
import com.epam.dlab.auth.aws.dao.AwsUserDAO;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import io.dropwizard.lifecycle.Managed;
import lombok.extern.slf4j.Slf4j;

import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;

@Singleton
@Slf4j
public class AwsCredentialRefreshService implements Managed {

    private final ScheduledExecutorService executor = Executors.newSingleThreadScheduledExecutor();
    private final AwsUserDAO awsUserDAO;
    private final AWSCredentialsProvider credentialsProvider;

    @Inject
    public AwsCredentialRefreshService(AwsUserDAO awsUserDAO, AWSCredentialsProvider credentialsProvider) {
        this.awsUserDAO = awsUserDAO;
        this.credentialsProvider = credentialsProvider;
    }

    @Override
    public void start() {
        executor.scheduleAtFixedRate(() -> refresh(credentialsProvider), 5, 5, TimeUnit.MINUTES);
    }

    @Override
    public void stop() {
        executor.shutdown();
    }

    private void refresh(AWSCredentialsProvider credentialsProvider) {
        try {
            credentialsProvider.refresh();
            this.awsUserDAO.updateCredentials(credentialsProvider.getCredentials());
            log.debug("provider credentials refreshed");
        } catch (Exception e) {
            log.error("AWS provider error", e);
            throw e;
        }
    }
}