io.pivotal.cfenv.spring.boot.RedisCfEnvProcessor Maven / Gradle / Ivy

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/*
 * Copyright 2019 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
 *
 *      https://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 io.pivotal.cfenv.spring.boot;

import java.util.Map;
import java.util.Optional;

import io.pivotal.cfenv.core.CfCredentials;
import io.pivotal.cfenv.core.CfService;
import io.pivotal.cfenv.core.UriInfo;

/**
 * Retrieve Redis properties from {@link CfCredentials} and set {@literal spring.redis}
 * Boot properties.
 *
 * @author Mark Pollack
 * @author Scott Frederick
 */
public class RedisCfEnvProcessor implements CfEnvProcessor {

	private final static String[] redisSchemes = {"redis", "rediss"};

	private static final String PREFIX = "spring.data.redis";

	@Override
	public boolean accept(CfService service) {
		boolean serviceIsBound = service.existsByTagIgnoreCase("redis") ||
				service.existsByLabelStartsWith("rediscloud") ||
				service.existsByUriSchemeStartsWith(redisSchemes) ||
				service.existsByCredentialsContainsUriField(redisSchemes);
		if (serviceIsBound) {
			ConnectorLibraryDetector.assertNoConnectorLibrary();
		}
		return serviceIsBound;
	}

	@Override
	public void process(CfCredentials cfCredentials, Map properties) {
		String uri = cfCredentials.getUri(redisSchemes);

		if (uri == null) {
			properties.put(PREFIX + ".host", cfCredentials.getHost());
			properties.put(PREFIX + ".password", cfCredentials.getPassword());

			Optional tlsPort = Optional.ofNullable(cfCredentials.getString("tls_port"));
			if (tlsPort.isPresent()) {
				properties.put(PREFIX + ".port", tlsPort.get());
				properties.put(PREFIX + ".ssl.enabled", Boolean.TRUE);
			} else {
				properties.put(PREFIX + ".port", cfCredentials.getPort());
			}
		} else {
			UriInfo uriInfo = new UriInfo(uri);
			properties.put(PREFIX + ".host", uriInfo.getHost());
			properties.put(PREFIX + ".port", uriInfo.getPort());
			properties.put(PREFIX + ".password", uriInfo.getPassword());
			if (uriInfo.getScheme().equals("rediss")) {
				properties.put(PREFIX + ".ssl.enabled", Boolean.TRUE);
			}
		}
	}

	@Override
	public CfEnvProcessorProperties getProperties() {
		return CfEnvProcessorProperties.builder()
				.propertyPrefixes(PREFIX)
				.serviceName("Redis")
				.build();
	}

}