go Quickstart

Overview

In this quickstart you will create a service that receives a name from a client and responds to the client with a message. Communication between the client and service is facilitated by the Netifi Broker.

**Early Release**

This is an early release, and under development. We are actively looking for feedback while we develop our go client, and work with the community on rsocket-go.

Prerequisites

You need the following items installed on your machine to run the quickstart:

Get Started

Follow the steps below to get up and running with Netifi quickly.

  1. Setup

    Install rsocket-rpc-go plugin

    go get -u github.com/rsocket/rsocket-rpc-go/protoc-gen-go
  2. Clone Quickstart Project

    Clone the Go Quickstart project from Github.

    git clone -b develop --single-branch https://github.com/netifi/netifi-quickstart-go.git
  3. Build the Project

    After you have cloned the project change to the netifi-quickstart-go directory and build the project:

    cd netifi-quickstart-go
    make
  4. Start the Broker

    Once the project is built you need to start the broker. The Netifi Broker is packaged and distributed as a Docker container. To start the Broker run the following command in another terminal window:

    docker run \
    -p 7001:7001 \
    -p 8001:8001 \
    -p 8101:8101 \
    -e BROKER_SERVER_OPTS=" \
    '-Dnetifi.broker.ssl.disabled=true' \
    '-Dnetifi.authentication.0.accessKey=9007199254740991'  \
    '-Dnetifi.authentication.0.accessToken=kTBDVtfRBO4tHOnZzSyY5ym2kfY=' \
    '-Dnetifi.broker.admin.accessKey=9007199254740991' \
    '-Dnetifi.broker.admin.accessToken=kTBDVtfRBO4tHOnZzSyY5ym2kfY='" \
    netifi/broker:1.6.9
  5. Start the Example Service

    Back in the netifi-quickstart-go directory start up the service by running the following command:

    ./service

    This will startup a simple service that connects to the broker.

  6. Run the Example Client

    Open another terminal window and go the netifi-quickstart-go directory. This time instead of starting the service, use a client to send a message. This can be done by running the following command:

    ./client

    The client will startup, connect to the broker, and send a message to the service.

    The following is approximately the expected output from the client:

    $ ./client
    ...
    2019/08/06 11:38:48 selecting new rsocket
    2019/08/06 11:38:48 no active rsocket attempting to connect to  tcp://localhost:8001
    2019/08/06 11:38:48 successfully connected to  tcp://localhost:8001
    message:"Hello, go" 
    ...

    The service logs should show that it has received the message:

    2019/08/06 11:45:32 received a message ->  go

    And the broker should show something akin to this:

    2019-08-06 11:38:48,898 INFO c.n.b.a.BrokerSocketAcceptor [reactor-tcp-nio-4] adding destination 3843195d-23e3-4928-807f-d8f912152535 to group helloGoClient
                                                2019-08-06 11:38:48,898 INFO c.n.b.a.ClusterSocketAcceptor [reactor-tcp-nio-4] adding destination 3843195d-23e3-4928-807f-d8f912152535 with tags [tag(com.netifi.destination=3843195d-23e3-4928-807f-d8f912152535)] to group helloGoClient
                                                2019-08-06 11:38:48,901 INFO c.n.b.a.BrokerSocketAcceptor [reactor-tcp-nio-4] removing destination 3843195d-23e3-4928-807f-d8f912152535 from group helloGoClient
                                                2019-08-06 11:38:48,902 INFO c.n.b.a.ClusterSocketAcceptor [reactor-tcp-nio-4] removing destination 3843195d-23e3-4928-807f-d8f912152535 from group helloGoClient
                                                2019-08-06 11:38:48,902 INFO c.n.b.a.BrokerSocketAcceptor [reactor-tcp-nio-4] removing destination 3843195d-23e3-4928-807f-d8f912152535 from destination map
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