Download and Run

You can run RESTHeart and MongoDB with Docker: go to Run with Docker for instructions.

Get the latest release

Download the ZIP or TAR archive.

zip tgz


$ unzip

Or un-tar

$ tar -xzf restheart.tar.gz

Configuration files are under the etc/ folder.

├── etc/
│   ├── acl.yml
│   ├──
│   ├── restheart.yml
│   └── users.yml
├── plugins/
│   ├── restheart-mongodb.jar
│   └── restheart-security.jar
└── restheart.jar

Run with Java

To run RESTHeart connected to a local instance of MongoDB you need:

  • At least Java v11;
  • MongoDB v3 or v4 running on localhost on port 27017.
$ cd restheart
$ java -jar restheart.jar etc/restheart.yml -e etc/

To check that RESTHeart is up and running, open the URL http://localhost:8080/ping, you should see the message: “Greetings from RESTHeart!”.

Alternatively, use a command line HTTP client like curl and httpie or a API client like Postman.

By default RESTHeart only mounts the database restheart. This is controlled by the root-mongo-resource in the restheart/etc/ file.

# The MongoDB resource to bind to the root URI /
# The format is /db[/coll[/docid]] or '*' to expose all dbs
root-mongo-resource = /restheart

It means that the root resource / is bound to the /restheart database. This database doesn’t actually exist until you explicitly create it by issuing a PUT / HTTP command.

Example for localhost:

$ curl --user admin:secret -I -X PUT :8080/
HTTP/1.1 201 OK

RESTHeart will start bound on HTTP port 8080.

Watch Java binaries

Default users and ACL

The default users.yml defines the following users:

  • id: admin, password: secret, role: admin
  • id: user, password: secret, role: user

The default acl.yml defines the following permission:

  • admin role can execute any request
  • user role can execute any request on collection /{username}

Check that everything works

# create database 'restheart'
$ curl --user admin:secret -I -X PUT :8080/
HTTP/1.1 201 OK

# create collection 'restheart.collection'
$ curl --user admin:secret -I -X PUT :8080/collection
HTTP/1.1 201 OK

# create a couple of documents
$ curl --user admin:secret -X POST :8080/collection -d '{"a":1}' -H "Content-Type: application/json"
$ curl --user admin:secret -X POST :8080/collection -d '{"a":2}' -H "Content-Type: application/json"

# get documents
$ curl --user admin:secret :8080/collection

Configuration files

The main configuration file is restheart.yml which is parametrized using The contains actual values for parameters defined into the YAML file. You pass these properties at startup, using the -e or --envFile parameter, like this:

$ java -jar restheart.jar etc/restheart.yml -e etc/

To connect RESTHeart to a remote MongoDB instance you have to edit the mongo-uri property, setting you own Connection String. For example, a MongoDB Atlas cluster connection string could be something like mongodb+srv://<username>:<password> Remember that RESTHeart internally uses the MongoDB Java driver, so you must follow that connection string format.

You have to restart the core restheart.jar process to reload a new configuration. How to stop and start the process depends on how it was started: either within a docker container or as a native Java process. In case of native Java, usually you have to kill the background java process but it depends on your operating system.

You can edit the YAML configuration file or create distinct properties file. Usually one set of properties for each deployment environment is a common practice.

Environment variables

It is possible to override any primitive type parameter in restheart.yml with environment variables.

Primitive types are:

  • String
  • Integer
  • Long
  • Boolean

The name of the shell environment variable is equal to a YAML parameter in restheart.yml, in uppercase and replacing - (dash) with _ (underscore).

To avoid conflicts with other variables, the environment variable name can be prefixed with RH_, RESTHEART_ or the legacy RESTHEART_SECURITY_ .

For example, the parameter mongo-uri in the YAML file can be overridden by the MONGO_URI environment variable:

$ MONGO_URI="mongodb://" java -jar restheart.jar etc/restheart.yml -e etc/

Due to a bug affecting RESTHeart until v5.1.6, environment variables must be prefixed with RESTHEART_SECURITY_ but for MongoService configuration options, like mongo-uri where no prefix is allowed. This has been fixed in RESTHeart v5.1.7.

Have a look at the docker-compose.yml file for an example of how to export an environment variable if using Docker.

The following log entry appears at the very beginning of logs during the startup process:

[main] WARN  org.restheart.Configuration - >>> Overriding parameter 'mongo-uri' with environment value 'MONGO_URI=mongodb://'

Environment variables replacement works only with primitive types: it doesn’t work with YAML structured data in configuration files, like arrays or maps. It’s mandatory to use properties files and mustache syntax for that.

To know the available CLI parameters, run RESTHeart with --help:

$ java -jar restheart.jar --help

Usage: java -Dfile.encoding=UTF-8 -jar -server restheart.jar [options]
      <Configuration file>
    --envFile, --envfile, -e
      Environment file name
      Fork the process
      Default: false
    --help, -?
      This help message

Watch Configuration

Run the process in background

To run RESTHeart in background add the --fork parameter, like this:

$ java -jar restheart.jar --fork etc/restheart.yml -e etc/

In this case to see the logs you first need to enable file logging and set an absolute path to a log file. For example, check that /usr/local/var/log/restheart.log is writeable and then edit etc/ like this:

enable-log-file = true
log-file-path = /usr/local/var/log/restheart.log

Run with Docker

The official RESTHeart’s public docker image is freely available on Docker hub. Have a look at the Dockerfile.

To run both RESTHeart and MongoDB services you can use docker-compose. Just copy and paste the following shell command:

curl --output docker-compose.yml && docker-compose up

You should see something similar to the following logs:

restheart    |  09:50:46.619 [main] INFO  o.r.mongodb.db.MongoClientSingleton - Connecting to MongoDB...
restheart-mongo | 2020-04-26T09:50:46.633+0000 I  NETWORK  [listener] connection accepted from #2 (2 connections now open)
restheart-mongo | 2020-04-26T09:50:46.635+0000 I  NETWORK  [conn2] received client metadata from conn2: { driver: { name: "mongo-java-driver|legacy", version: "3.11.2" }, os: { type: "Linux", name: "Linux", architecture: "amd64", version: "4.19.76-linuxkit" }, platform: "Java/Debian/11.0.6+10-post-Debian-1bpo91" }
restheart-mongo | 2020-04-26T09:50:46.636+0000 I  SHARDING [conn2] Marking collection admin.system.users as collection version: <unsharded>
restheart-mongo | 2020-04-26T09:50:46.870+0000 I  ACCESS   [conn2] Successfully authenticated as principal restheart on admin from client
restheart    |  09:50:46.892 [main] INFO  o.r.mongodb.db.MongoClientSingleton - MongoDB version 4.2.1
restheart    |  09:50:46.893 [main] WARN  o.r.mongodb.db.MongoClientSingleton - MongoDB is a standalone instance.
restheart    |  09:50:47.156 [main] INFO  org.restheart.mongodb.MongoService - URI / bound to MongoDB resource /restheart
restheart    |  09:50:47.482 [main] INFO  org.restheart.Bootstrapper - HTTP listener bound at
restheart    |  09:50:47.483 [main] DEBUG org.restheart.Bootstrapper - Content buffers maximun size is 16777216 bytes
restheart    |  09:50:47.498 [main] INFO  org.restheart.Bootstrapper - URI / bound to service mongo, secured: true
restheart    |  09:50:47.501 [main] INFO  org.restheart.Bootstrapper - URI /ic bound to service cacheInvalidator, secured: false
restheart    |  09:50:47.502 [main] INFO  org.restheart.Bootstrapper - URI /csv bound to service csvLoader, secured: false
restheart    |  09:50:47.503 [main] INFO  org.restheart.Bootstrapper - URI /roles bound to service roles, secured: true
restheart    |  09:50:47.504 [main] INFO  org.restheart.Bootstrapper - URI /ping bound to service ping, secured: false
restheart    |  09:50:47.506 [main] INFO  org.restheart.Bootstrapper - URI /tokens bound to service rndTokenService, secured: false
restheart    |  09:50:47.506 [main] DEBUG org.restheart.Bootstrapper - No proxies specified
restheart    |  09:50:47.515 [main] DEBUG org.restheart.Bootstrapper - Allow unescaped characters in URL: true
restheart    |  09:50:47.771 [main] INFO  org.restheart.Bootstrapper - Pid file /var/run/
restheart    |  09:50:47.773 [main] INFO  org.restheart.Bootstrapper - RESTHeart started

Now point your browser to RESTHeart’s ping resource, you’ll see the single line of text “Greetings from RESTHeart!”.

Alternatively, use curl:

$ curl -i http://localhost:8080/ping

HTTP/1.1 200 OK
Connection: keep-alive
Access-Control-Allow-Origin: *
Access-Control-Allow-Credentials: true
Access-Control-Expose-Headers: Location, ETag, Auth-Token, Auth-Token-Valid-Until, Auth-Token-Location, X-Powered-By
Content-Length: 25
Date: Sun, 26 Apr 2020 10:05:43 GMT

Greetings from RESTHeart!

Press Ctrl+C to stop the containers:

^CGracefully stopping... (press Ctrl+C again to force)
Stopping restheart       ... done
Stopping restheart-mongo ... done

If you want to run the services in background just add the -d parameter, like docker-compose up -d. In this case you can tail the logs with docker-compose logs -f.

To stop the containers use docker-compose stop then docker-compose start to start them again.

To completely shutdown the containers and clean-up everything use docker-compose down -v.

Beware the down command with -v parameter erases the MongoDB attached docker volume (named restheart-mongo-volume) with all its data.

Read the docker compose documentation for more.

Watch Docker / Docker Compose

Build it yourself

Building RESTHeart by yourself is not necessary, but if you want to try then it requires Maven and Java 11 or later.

$ mvn clean package

After building cd core/target where, among other files, you’ll have the structure below

├── restheart.jar
└──  plugins/
    ├── restheart-mongodb.jar
    └── restheart-security.jar

You can copy these files somewhere else and the run the executable restheart.jar passing to it the path of the YAML configuration file.

Have a look at core/etc/restheart.yml and core/etc/ for more.

Integration Tests

To run the integration test suite, first make sure that Docker is running. Maven starts a MongoDB volatile instance with Docker.

$ mvn verify

Maven Dependencies

RESTHeart’s releases are available on Maven Central.

Stable releases are available at:

The main difference with the past is that in RESTHeart v5 for a developer is just enough to compile against the restheart-commons library to create a plugin, which is a JAR file to be copied into the plugins/ folder and class-loaded during startup.

To compile new plugins, add the restheart-commons dependency to your POM file:


IMPORTANT: The restheart-commons artifact in the commons module has been released using the Apache v2 license instead of the AGPL v3. This is much like MongoDB is doing with the Java driver. It implies your projects does not incur in the AGPL restrictions when extending RESTHeart with plugins.

Project structure

Starting from RESTHeart v5 we have merged all sub-projects into a single Maven multi module project and a single Git repository (this one).

The v4 architecture, in fact, was split into two separate Java processes: one for managing security, identity and access management (restheart-security) and one to access the database layer (restheart). The new v5 architecture is monolithic, like it was RESTHeart v3. This decision was due to the excessive complexity of building and deploying two distinct processes and the little gains we have observed in real applications.

Then core module now is just Undertow plus a bootstrapper which reads the configuration and starts the HTTP server. The security module provides Authentication and Authorization services, while the mongodb module interacts with MongoDB and exposes all of its services via a REST API, as usual. Besides, we added a new commons module which is a shared library, including all interfaces and implementations in common among the other modules.

├── commons
├── core
├── mongodb
└── security

Watch Compile source code from scratch