We are now a github organization. You are invited to participate. Starting with version 2 we are going to support only java 8 or higher. If you are looking for the older version you can find it in the 1.7 branch.
Embedded MongoDB will provide a platform neutral way for running mongodb in unittests.
- dropping databases causing some pains (often you have to wait long time after each test)
- its easy, much easier as installing right version by hand
- you can change version per test
We use http://www.apache.org/licenses/LICENSE-2.0
Poll: Which MongoDB version should stay supported?
- Embed Process Util de.flapdoodle.embed.process
- in a Maven build using maven-mongodb-plugin or embedmongo-maven-plugin
- in a Clojure/Leiningen project using lein-embongo
- in a Gradle build using gradle-mongo-plugin
- in a Scala/specs2 specification using specs2-embedmongo
- in Scala tests using scalatest-embedmongo
- http://stackoverflow.com/questions/6437226/embedded-mongodb-when-running-integration-tests
- http://www.cubeia.com/index.php/blog/archives/436
- http://blog.diabol.se/?p=390
- https://github.com/thiloplanz/jmockmongo - mongodb mocking
- https://github.com/lordofthejars/nosql-unit - extended nosql unit testing
- https://github.com/jirutka/embedmongo-spring - Spring Factory Bean for EmbedMongo
There is a report on backward binary compatibility and API changes for the library: https://abi-laboratory.pro/java/tracker/timeline/de.flapdoodle.embed.mongo/ -> thanks @lvc
Snapshots (Repository http://oss.sonatype.org/content/repositories/snapshots)
<dependency>
<groupId>de.flapdoodle.embed</groupId>
<artifactId>de.flapdoodle.embed.mongo</artifactId>
<version>3.0.1-SNAPSHOT</version>
</dependency>
Make sure you have mavenCentral() in your repositories or that your enterprise/local server proxies the maven central repository.
dependencies {
testCompile group: "de.flapdoodle.embed", name: "de.flapdoodle.embed.mongo", version: "3.0.1-SNAPSHOT"
}
When you fork or clone our branch you should always be able to build the library by running
mvn package
Versions: some older, a stable and a development version Support for Linux, Windows and MacOSX.
MongodStarter starter = MongodStarter.getDefaultInstance();
int port = Network.getFreeServerPort();
MongodConfig mongodConfig = MongodConfig.builder()
.version(Version.Main.PRODUCTION)
.net(new Net(port, Network.localhostIsIPv6()))
.build();
MongodExecutable mongodExecutable = null;
try {
mongodExecutable = starter.prepare(mongodConfig);
MongodProcess mongod = mongodExecutable.start();
try (MongoClient mongo = new MongoClient("localhost", port)) {
DB db = mongo.getDB("test");
DBCollection col = db.createCollection("testCol", new BasicDBObject());
col.save(new BasicDBObject("testDoc", new Date()));
}
} finally {
if (mongodExecutable != null)
mongodExecutable.stop();
}You should make the MongodStarter instance or the RuntimeConfig instance static (per Class or per JVM). The main purpose of that is the caching of extracted executables and library files. This is done by the ArtifactStore instance configured with the RuntimeConfig instance. Each instance uses its own cache so multiple RuntimeConfig instances will use multiple ArtifactStores an multiple caches with much less cache hits:)
If you do not restrict bindId to localhost you get windows firewall dialog popups.
To avoid them you can choose a stable executable name with UserTempNaming.
This way the firewall dialog only popups once. See Executable Collision
int port = Network.getFreeServerPort();
Command command = Command.MongoD;
RuntimeConfig runtimeConfig = Defaults.runtimeConfigFor(command)
.artifactStore(Defaults.extractedArtifactStoreFor(command)
.withDownloadConfig(Defaults.downloadConfigFor(command).build())
.executableNaming(new UserTempNaming()))
.build();
MongodConfig mongodConfig = MongodConfig.builder()
.version(Version.Main.PRODUCTION)
.net(new Net(port, Network.localhostIsIPv6()))
.build();
MongodStarter runtime = MongodStarter.getInstance(runtimeConfig);
MongodExecutable mongodExecutable = null;
try {
mongodExecutable = runtime.prepare(mongodConfig);
MongodProcess mongod = mongodExecutable.start();
try (MongoClient mongo = new MongoClient("localhost", port)) {
DB db = mongo.getDB("test");
DBCollection col = db.createCollection("testCol", new BasicDBObject());
col.save(new BasicDBObject("testDoc", new Date()));
}
} finally {
if (mongodExecutable != null)
mongodExecutable.stop();
}public abstract class AbstractMongoDBTest extends TestCase {
/**
* please store Starter or RuntimeConfig in a static final field
* if you want to use artifact store caching (or else disable caching)
*/
private static final MongodStarter starter = MongodStarter.getDefaultInstance();
private MongodExecutable _mongodExe;
private MongodProcess _mongod;
private MongoClient _mongo;
private int port;
@Override
protected void setUp() throws Exception {
port = Network.getFreeServerPort();
_mongodExe = starter.prepare(createMongodConfig());
_mongod = _mongodExe.start();
super.setUp();
_mongo = new MongoClient("localhost", port);
}
public int port() {
return port;
}
protected IMongodConfig createMongodConfig() throws UnknownHostException, IOException {
return createMongodConfigBuilder().build();
}
protected MongodConfigBuilder createMongodConfigBuilder() throws UnknownHostException, IOException {
return new MongodConfigBuilder()
.version(Version.Main.PRODUCTION)
.net(new Net(port, Network.localhostIsIPv6()));
}
@Override
protected void tearDown() throws Exception {
super.tearDown();
_mongod.stop();
_mongodExe.stop();
}
public Mongo getMongo() {
return _mongo;
}
}MongodForTestsFactory factory = null;
try {
factory = MongodForTestsFactory.with(Version.Main.PRODUCTION);
try (MongoClient mongo = factory.newMongo()) {
DB db = mongo.getDB("test-" + UUID.randomUUID());
DBCollection col = db.createCollection("testCol", new BasicDBObject());
col.save(new BasicDBObject("testDoc", new Date()));
}
} finally {
if (factory != null)
factory.shutdown();
}Command command = Command.MongoD;
RuntimeConfig runtimeConfig = Defaults.runtimeConfigFor(command)
.artifactStore(Defaults.extractedArtifactStoreFor(command)
.withDownloadConfig(Defaults.downloadConfigFor(command)
.downloadPath((__) -> "http://my.custom.download.domain/")
.build()))
.build();Command command = Command.MongoD;
RuntimeConfig runtimeConfig = Defaults.runtimeConfigFor(command)
.artifactStore(Defaults.extractedArtifactStoreFor(command)
.withDownloadConfig(Defaults.downloadConfigFor(command)
.proxyFactory(new HttpProxyFactory("fooo", 1234))
.build()))
.build();Directory artifactStorePath = new FixedPath(System.getProperty("user.home") + "/.embeddedMongodbCustomPath");
TempNaming executableNaming = new UUIDTempNaming();
Command command = Command.MongoD;
RuntimeConfig runtimeConfig = Defaults.runtimeConfigFor(command)
.artifactStore(Defaults.extractedArtifactStoreFor(command)
.withDownloadConfig(Defaults.downloadConfigFor(command)
.artifactStorePath(artifactStorePath)
.build())
.executableNaming(executableNaming))
.build();
MongodStarter runtime = MongodStarter.getInstance(runtimeConfig);
MongodExecutable mongodExe = runtime.prepare(mongodConfig);ProcessOutput processOutput = new ProcessOutput(Processors.namedConsole("[mongod>]"),
Processors.namedConsole("[MONGOD>]"), Processors.namedConsole("[console>]"));
RuntimeConfig runtimeConfig = Defaults.runtimeConfigFor(Command.MongoD)
.processOutput(processOutput)
.build();
MongodStarter runtime = MongodStarter.getInstance(runtimeConfig);...
StreamProcessor mongodOutput = Processors.named("[mongod>]",
new FileStreamProcessor(File.createTempFile("mongod", "log")));
StreamProcessor mongodError = new FileStreamProcessor(File.createTempFile("mongod-error", "log"));
StreamProcessor commandsOutput = Processors.namedConsole("[console>]");
RuntimeConfig runtimeConfig = Defaults.runtimeConfigFor(Command.MongoD)
.processOutput(new ProcessOutput(mongodOutput, mongodError, commandsOutput))
.build();
MongodStarter runtime = MongodStarter.getInstance(runtimeConfig);
...
...
// ...
public class FileStreamProcessor implements StreamProcessor {
private final FileOutputStream outputStream;
public FileStreamProcessor(File file) throws FileNotFoundException {
outputStream = new FileOutputStream(file);
}
@Override
public void process(String block) {
try {
outputStream.write(block.getBytes());
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void onProcessed() {
try {
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
// ...
// <-
...Logger logger = LoggerFactory.getLogger(getClass().getName());
ProcessOutput processOutput = new ProcessOutput(Processors.logTo(logger, Slf4jLevel.INFO), Processors.logTo(logger,
Slf4jLevel.ERROR), Processors.named("[console>]", Processors.logTo(logger, Slf4jLevel.DEBUG)));
RuntimeConfig runtimeConfig = Defaults.runtimeConfigFor(Command.MongoD, logger)
.processOutput(processOutput)
.artifactStore(Defaults.extractedArtifactStoreFor(Command.MongoD)
.download(Defaults.downloadConfigFor(Command.MongoD)
.progressListener(new Slf4jProgressListener(logger))))
.build();
MongodStarter runtime = MongodStarter.getInstance(runtimeConfig);Logger logger = LoggerFactory.getLogger(getClass().getName());
RuntimeConfig runtimeConfig = Defaults.runtimeConfigFor(Command.MongoD, logger)
.build();
MongodStarter runtime = MongodStarter.getInstance(runtimeConfig);Logger logger = LoggerFactory.getLogger(getClass().getName());
RuntimeConfig runtimeConfig = Defaults.runtimeConfigFor(Command.MongoD, logger)
.processOutput(ProcessOutput.getDefaultInstanceSilent())
.build();
MongodStarter runtime = MongodStarter.getInstance(runtimeConfig);int port = 12345;
MongodConfig mongodConfig = MongodConfig.builder()
.version(Versions.withFeatures(de.flapdoodle.embed.process.distribution.Version.of("2.7.1"), Feature.SYNC_DELAY))
.net(new Net(port, Network.localhostIsIPv6()))
.build();
MongodStarter runtime = MongodStarter.getDefaultInstance();
MongodProcess mongod = null;
MongodExecutable mongodExecutable = null;
try {
mongodExecutable = runtime.prepare(mongodConfig);
mongod = mongodExecutable.start();
...
} finally {
if (mongod != null) {
mongod.stop();
}
if (mongodExecutable != null)
mongodExecutable.stop();
}IFeatureAwareVersion version = Version.V2_2_5;
// uses latest supported 2.2.x Version
version = Version.Main.V2_2;
// uses latest supported production version
version = Version.Main.PRODUCTION;
// uses latest supported development version
version = Version.Main.DEVELOPMENT;Warning: maybe not as stable, as expected.
int port = Network.getFreeServerPort();MongodConfig mongodConfig = MongodConfig.builder().version(Version.Main.PRODUCTION).build();
MongodStarter runtime = MongodStarter.getDefaultInstance();
MongodExecutable mongodExecutable = null;
MongodProcess mongod = null;
try {
mongodExecutable = runtime.prepare(mongodConfig);
mongod = mongodExecutable.start();
try (MongoClient mongo = new MongoClient(
new ServerAddress(mongodConfig.net().getServerAddress(), mongodConfig.net().getPort()))) {
...
}
} finally {
if (mongod != null) {
mongod.stop();
}
if (mongodExecutable != null)
mongodExecutable.stop();
}MongodConfig mongodConfig = MongodConfig.builder()
.version(Version.Main.PRODUCTION)
.timeout(new Timeout(30000))
.build();CommandLinePostProcessor postProcessor = new CommandLinePostProcessor() {
@Override
public List<String> process(Distribution distribution, List<String> args) {
return null;
}
};
...
RuntimeConfig runtimeConfig = Defaults.runtimeConfigFor(Command.MongoD)
.commandLinePostProcessor(postProcessor)
.build();We changed the syncDelay to 0 which turns off sync to disc. To turn on default value used defaultSyncDelay().
MongodConfig mongodConfig = MongodConfig.builder()
.version(Version.Main.PRODUCTION)
.cmdOptions(MongoCmdOptions.builder()
.syncDelay(10)
.useNoPrealloc(false)
.useSmallFiles(false)
.useNoJournal(false)
.enableTextSearch(true)
.build())
.build();We changed the syncDelay to 0 which turns off sync to disc. To get the files to create an snapshot you must turn on default value (use defaultSyncDelay()).
MongodConfig mongodConfig = MongodConfig.builder()
.version(Version.Main.PRODUCTION)
.processListener(new CopyDbFilesFromDirBeforeProcessStop(destination))
.cmdOptions(MongoCmdOptions.builder()
.useDefaultSyncDelay(true)
.build())
.build();If you set a custom database directory, it will not be deleted after shutdown
Storage replication = new Storage("/custom/databaseDir",null,0);
MongodConfig mongodConfig = MongodConfig.builder()
.version(Version.Main.PRODUCTION)
.replication(replication)
.build();this is an very easy example to use mongos and mongod
int port = 12121;
int defaultConfigPort = 12345;
String defaultHost = "localhost";
MongodProcess mongod = startMongod(defaultConfigPort);
try {
MongosProcess mongos = startMongos(port, defaultConfigPort, defaultHost);
try {
MongoClient mongoClient = new MongoClient(defaultHost, defaultConfigPort);
System.out.println("DB Names: " + mongoClient.getDatabaseNames());
} finally {
mongos.stop();
}
} finally {
mongod.stop();
}
private MongosProcess startMongos(int port, int defaultConfigPort, String defaultHost) throws UnknownHostException,
IOException {
IMongosConfig mongosConfig = new MongosConfigBuilder()
.version(Version.Main.PRODUCTION)
.net(new Net(port, Network.localhostIsIPv6()))
.configDB(defaultHost + ":" + defaultConfigPort)
.build();
MongosExecutable mongosExecutable = MongosStarter.getDefaultInstance().prepare(mongosConfig);
MongosProcess mongos = mongosExecutable.start();
return mongos;
}
private MongodProcess startMongod(int defaultConfigPort) throws UnknownHostException, IOException {
IMongodConfig mongoConfigConfig = new MongodConfigBuilder()
.version(Version.Main.PRODUCTION)
.net(new Net(defaultConfigPort, Network.localhostIsIPv6()))
.configServer(true)
.build();
MongodExecutable mongodExecutable = MongodStarter.getDefaultInstance().prepare(mongoConfigConfig);
MongodProcess mongod = mongodExecutable.start();
return mongod;
}int defaultConfigPort = Network.getFreeServerPort();
String database = "importTestDB";
String collection = "importedCollection";
MongodConfig mongoConfigConfig = MongodConfig.builder()
.version(Version.Main.PRODUCTION)
.net(new Net(defaultConfigPort, Network.localhostIsIPv6()))
.build();
MongodExecutable mongodExecutable = MongodStarter.getDefaultInstance().prepare(mongoConfigConfig);
MongodProcess mongod = mongodExecutable.start();
try {
MongoImportConfig mongoImportConfig = MongoImportConfig.builder()
.version(Version.Main.PRODUCTION)
.net(new Net(defaultConfigPort, Network.localhostIsIPv6()))
.databaseName(database)
.collectionName(collection)
.isUpsertDocuments(true)
.isDropCollection(true)
.isJsonArray(true)
.importFile(jsonFile)
.build();
MongoImportExecutable mongoImportExecutable = MongoImportStarter.getDefaultInstance().prepare(mongoImportConfig);
MongoImportProcess mongoImport = mongoImportExecutable.start();
try {
...
}
finally {
mongoImport.stop();
}
}
finally {
mongod.stop();
}There is a good chance of filename collisions if you use a custom naming schema for the executable (see Usage - custom mongod filename). If you got an exception, then you should make your RuntimeConfig or MongoStarter class or jvm static (static final in your test class or singleton class for all tests).
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