Micro Examples

This is a repository for micro examples. Feel free to contribute.

Contents

• api - Provides API usage examples
• booking - A booking.com demo application
• broker - A example of using Broker for Publish and Subscribing.
• client - Usage of the Client package to call a service.
• command - An example of bot commands as micro services
• event - Using the API Gateway event handler
• flags - Using command line flags with a service
• form - How to parse a form behind the micro api
• function - Example of using Function programming model
• graceful - Demonstrates graceful shutdown of a service
• greeter - A complete greeter example (includes python, ruby examples)
• heartbeat - Make services heartbeat with discovery for high availability
• helloworld - Hello world using micro
• metadata - Extracting metadata from context of a request
• options - Setting options in the go-micro framework
• plugins - How to use plugins
• pubsub - Example of using pubsub at the client/server level
• grpc - Examples of how to use go-grpc
• redirect - An example of how to http redirect using an API service
• roundrobin - A stateful client wrapper for true round robin of requests
• secure - Demonstrates use of transport secure option for self signed certs
• server - Use of the Server package directly to server requests.
• service - Example of the top level Service in go-micro.
• sharding - An example of how to shard requests or use session affinity
• shutdown - Demonstrates graceful shutdown via context cancellation
• sidecar - Greeter service using the sidecar with multiple languages
• stream - An example of a streaming service and client
• template - Api, web and srv service templates generated with the 'micro new' command
• waitgroup - Demonstrates how to use a waitgroup with a service
• wrapper - A simple example of using a log wrapper

External

• auth-srv - An Oauth2 authentication service
• geo-srv - Geolocation tracking service using hailocab/go-geoindex
• geo-web - Web demo for the geo srv
• geo-api - API for the geo srv
• discovery-srv - A discovery in the micro platform
• geocode-srv - A geocoding service using the Google Geocoding API
• hailo-srv - A service for the hailo taxi service developer api
• monitor-srv - A monitoring service for Micro services
• place-srv - A microservice to store and retrieve places (includes Google Place Search API)
• slack-srv - The slack bot API as a go-micro RPC service
• trace-srv - A distributed tracing microservice in the realm of dapper, zipkin, etc
• twitter-srv - A microservice for the twitter API
• user-srv - A microservice for user management and authentication

Community

Find contributions from the community via the explorer

• go-shopping - A sample product with a suite of services

Dependencies

Service Discovery

All services require service discovery. The default is Consul or MDNS.

Consul

Install

brew install consul

Run

consul agent -dev

Multicast DNS

Use flag --registry=mdns for a zero dependency configuration

Protobuf

Protobuf is used for code generation of message types and client/hander stubs.

If making changes recompile the protos.

Install

Install protoc for your environment. Then:

go get github.com/golang/protobuf/{proto,protoc-gen-go}

go get github.com/micro/protoc-gen-micro

Compile Proto

protoc --proto_path=$GOPATH/src:. --micro_out=. --go_out=. path/to/proto