ptzagk / examples-8

Learn micro by example

Micro Examples

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

i18n

中文版本

Contents

Most likely needed examples

• service - A sample micro service
• greeter - A complete greeter example
• booking - A demo end to end application

Other

• 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
• config - Using Go Config for dynamic config
• event - Using the API Gateway event handler
• filter - Filter nodes of a service when requesting
• 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
• getip - Get the local and remote ip from metadata
• 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
• kubernetes - Examples of using the k8s registry and grpc
• metadata - Extracting metadata from context of a request
• mocking - Demonstrate mocking helloworld service
• noproto - Use micro without protobuf or code generation, only go types
• 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-micro/service/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
• stream - An example of a streaming service and client
• template - Api, web and srv service templates generated with the 'micro new' command
• tunnel - How to use connection tunneling with the tunnel package
• waitgroup - Demonstrates how to use a waitgroup with a service
• wrapper - A simple example of using a log wrapper

Community

Find contributions from the community via the explorer

• go-shopping - A sample product with a suite of services
• shippy - A multi app demo and tutorial
• microhq - A place for micro services

Dependencies

• Service Discovery
• Protobuf

Service Discovery

All services require service discovery. The default is multicast DNS, a zeroconf system.

If you need something multi-host or more resilient use consul.

Consul

# install
brew install consul

# run
consul agent -dev

Use flag --registry=consul to enable the consul registry.

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