EventStoreDB gRPC Client written in Golang

This is a fork of the EventStore's Golang Client for EventStoreDB

Supported EventstoreDB gRPC API version

Supports Eventstore gRPC API 21.6.0

How To Install

$ go get github.com/pivonroll/EventStore-Client-Go

Supported Features

• Event Streams
  • Append Events One by One
  • Batch Append Events
  • Tombstone (hard delete)
  • Delete (soft delete)
  • Get/Set Stream Metadata
  • Read Stream Events
  • Read All Events
  • Subscribe To Stream
  • Subscribe To All
• Persistent Subscriptions
  • Create/Update/Delete
  • Subscribe To Persistent Subscription
• Projections
  • Create/Update/Delete Projections
  • Enable/Abort/Disable/Reset Projection
  • Get Projection's State/Result/Statistics
  • Restart Projection Subsystem
  • List All/Continuous/One Time Projections
• User Management
  • Create/Update/Delete User
  • Enable/Disable User
  • Get User's Details
  • List All Users
  • Change User's Password
  • Reset Users Password
• Operations
  • Merge Indexes
  • Resign Node
  • Restart Persistent Subscriptions
  • Scavenging (Start/Stop)
  • Set Node Priority
  • Shutdown

Developing

Integration tests run against a server using Docker, with the EventStoreDB gRPC Client Test Container. New releases are published on github.com/pivonroll/EventStore-Client-Go. To run integration tests you need to have Docker installed and running.

Starting docker in most Linux distros is done through systemctl. For example:

$ sudo systemctl start docker.service

If your Linux distro does not use systemctl, check what it uses and how to start docker on it.

Setup dependencies

Some dependencies are required in order to work with the code

1. Generate GRPC Client from proto

In order to generate Golang GRPC Client code from proto, run:

Windows

.\build.ps1 -generateProtos

Unix (Linux or OSX)

./build.sh --generate-protos

2. Generate certificates for testing TLS requirements

To generate certificates for TLS you need to run (from projects main directory)

$ sudo docker-compose up

The docker container will generate TLS certificates and put them in ./certs directory.

3. Fetch EventstoreDB container with available pre-populated database

To access the docker images in GitHub Packages, you need to authenticate docker with a gitub personal access token. It should be generated with at least the following scopes:

• repo
• read:packages

Then login to the github docker registry with:

$ sudo docker login https://docker.pkg.github.com -u YOUR_GITHUB_USERNAME

or

$ sudo docker login ghcr.io  -u YOUR_GITHUB_USERNAME

and provide your personal access token as a password.

Alternatively you can store your access token in a file (example: ~/.accesstoken) and login by executing:

$ cat ~/.accesstoken | docker login ghcr.io -u USERNAME --password-stdin

The full instructions can be found in the "Authenticating to GitHub packages" guide.

Pull the required docker image (should be 21.6.0):

$ sudo docker pull docker.pkg.github.com/eventstore/eventstore-client-grpc-testdata/eventstore-client-grpc-testdata:21.6.0-buster-slim

Build the project

On Windows, you need Powershell. The version that comes standard with Windows is enough. On a Unix system, any bash compatible shell should work.

Windows

.\build.ps1

Unix (Linux or OSX)

./build.sh

Run tests

go test ./client

Contributing

All contributions to the SDK are made via GitHub Pull Requests, and must be licensed under the Apache 2.0 license.