/**
* Copyright 2016-2017 Sixt GmbH & Co. Autovermietung KG
* 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.sixt.service.framework.servicetest.helper;
import com.palantir.docker.compose.DockerComposeRule;
import com.palantir.docker.compose.connection.DockerPort;
import com.palantir.docker.compose.connection.waiting.SuccessOrFailure;
import com.sixt.service.framework.ServiceProperties;
import org.apache.commons.io.FileUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.io.IOException;
import java.lang.reflect.Field;
import java.nio.charset.Charset;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
public class DockerComposeHelper {
private static final Logger logger = LoggerFactory.getLogger(DockerComposeHelper.class);
/**
* Set environment variable "kafkaServer" to the host and port specified by
* docker
*/
public static void setKafkaEnvironment(DockerComposeRule docker) {
DockerPort kafka = docker.containers().container("kafka").port(9092);
Map<String, String> newEnv = new HashMap<>();
newEnv.put(ServiceProperties.KAFKA_SERVER_KEY, kafka.inFormat("$HOST:$EXTERNAL_PORT"));
newEnv.putAll(System.getenv());
setEnv(newEnv);
}
/**
* Set environment variable "registryServer" to the host and port specified by
* docker
*/
public static void setConsulEnvironment(DockerComposeRule docker) {
DockerPort consul = docker.containers().container("consul").port(8500);
Map<String, String> newEnv = new HashMap<>();
newEnv.put(ServiceProperties.REGISTRY_SERVER_KEY, consul.inFormat("$HOST:$EXTERNAL_PORT"));
newEnv.putAll(System.getenv());
setEnv(newEnv);
}
/**
* Set environment variable "etcd_endpoints" to the host and port specified by
* docker
*/
public static void setEtcdEnvironment(DockerComposeRule docker) {
DockerPort etcd = docker.containers().container("etcd").port(2379);
Map<String, String> newEnv = new HashMap<>();
newEnv.put("etcd_endpoints", etcd.inFormat("http://$HOST:$EXTERNAL_PORT"));
newEnv.putAll(System.getenv());
setEnv(newEnv);
}
/**
* Get the server name of the postgres docker instance
*
* @param docker The used docker compose rule
* @return postgresServerName
*/
public static String getPostgresServerName(DockerComposeRule docker) {
DockerPort postgres = docker.containers().container("postgres").port(5432);
return postgres.inFormat("$HOST");
}
/**
* Get the external port of the postgres docker instance
*
* @param docker The used docker compose rule
* @return postgresExternalPort
*/
public static String getPostgresExternalPort(DockerComposeRule docker) {
DockerPort postgres = docker.containers().container("postgres").port(5432);
return postgres.inFormat("$EXTERNAL_PORT");
}
/**
* Wait for kafka to become ready by checking log for "Created topic events"
* NOTE: For auto-creating topics, ensure the topic 'events' is last in the list.
*
* @param logFile The logfile to check
* @return SuccessOrFailure
*/
public static SuccessOrFailure waitForKafka(String logFile) {
// Since we don't know which partition is placed on which replica, do now wait for any particular partition.
return waitFor(logFile, "Completed load of log events", "Kafka not ready yet");
}
/**
* Wait for postgres to become ready by checking log for
* "database system is ready to accept connections"
*
* @param logFile The logfile to check
* @return SuccessOrFailure
*/
public static SuccessOrFailure waitForPostgres(String logFile) {
return waitForPostgres(logFile, "PostgreSQL init process complete; ready for start up");
}
/**
* Wait for keycloak to become ready by checking log for
* "Deployed \"keycloak-server.war\""
*
* @param logFile The logfile to check
* @return SuccessOrFailure
*/
public static SuccessOrFailure waitForKeycloak(String logFile) {
return waitFor(logFile, "Deployed \"keycloak-server.war\"", "Keycloak is not ready yet");
}
/**
* Wait for postgres to become ready by checking log for
* some custom expected phrase
*
* @param logFile The logfile to check
* @param phraseToWaitFor The phrase in logs we wait for
* @return SuccessOrFailure
*/
public static SuccessOrFailure waitForPostgres(String logFile, String phraseToWaitFor) {
return waitFor(logFile, phraseToWaitFor, "Postgres not ready yet");
}
/**
* Wait for Consul to become ready by checking log for "consul: New leader elected"
*
* @param logFile The logfile to check
* @return SuccessOrFailure
*/
public static SuccessOrFailure waitForConsul(String logFile) {
return waitFor(logFile, "consul: New leader elected", "Consul not ready yet");
}
/**
* Wait for ETCD to become ready by checking log for "etcdserver: published"
*
* @param logFile The logfile to check
* @return SuccessOrFailure
*/
public static SuccessOrFailure waitForEtcd(String logFile) {
return waitFor(logFile, "etcdserver: published", "ETCD not ready yet");
}
/**
* Wait for Dynamo DB to become ready by checking log for "CorsParams:"
*
* @param logFile The logfile to check
* @return SuccessOrFailure
*/
public static SuccessOrFailure waitForDynamoDb(String logFile) {
return waitFor(logFile, "CorsParams:", "Dynamo DB not ready yet");
}
private static SuccessOrFailure waitFor(String logFile, String expected, String timeoutMsg) {
try {
String log = FileUtils.readFileToString(new File(logFile), Charset.defaultCharset());
if (log.contains(expected)) {
return SuccessOrFailure.success();
}
} catch (IOException ex) {
logger.error("Error waiting for container", ex);
}
return SuccessOrFailure.failure(timeoutMsg);
}
// Credits to: http://stackoverflow.com/questions/318239/how-do-i-set-environment-variables-from-java
@SuppressWarnings("unchecked")
private static void setEnv(Map<String, String> newEnv) {
try {
Class<?> processEnvironmentClass = Class.forName("java.lang.ProcessEnvironment");
Field theEnvironmentField = processEnvironmentClass.getDeclaredField("theEnvironment");
theEnvironmentField.setAccessible(true);
Map<String, String> env = (Map<String, String>) theEnvironmentField.get(null);
env.putAll(newEnv);
Field theCaseInsensitiveEnvironmentField = processEnvironmentClass.getDeclaredField("theCaseInsensitiveEnvironment");
theCaseInsensitiveEnvironmentField.setAccessible(true);
Map<String, String> cienv = (Map<String, String>) theCaseInsensitiveEnvironmentField.get(null);
cienv.putAll(newEnv);
} catch (NoSuchFieldException e) {
try {
Class[] classes = Collections.class.getDeclaredClasses();
Map<String, String> env = System.getenv();
for (Class cl : classes) {
if ("java.util.Collections$UnmodifiableMap".equals(cl.getName())) {
Field field = cl.getDeclaredField("m");
field.setAccessible(true);
Object obj = field.get(env);
Map<String, String> map = (Map<String, String>) obj;
map.clear();
map.putAll(newEnv);
}
}
} catch (Exception e2) {
e2.printStackTrace();
}
} catch (Exception e1) {
e1.printStackTrace();
}
}
}