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Write microservice in golang
The document covers building microservices using Golang, detailing the concept of microservices, reasons for choosing them, and an introduction to the Go programming language. It includes information on Golang's testing tools, deployment processes, and various frameworks available for web development. Additionally, it addresses best practices for coding, concurrency, and effective teamwork in Go projects.
Write microservice in golang
- 1. Build MicroServices inGolang Bo-Yi Wu 2016.08.21 1
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- 3. Agenda • What areMicroservices? • Why Microservices? • Golang Introduction • Golang Testing Tool • Golang Deployment 3
- 4. What are Microservices? •Fulfill only one task • Application is a suite of small services and size • Communicate with lightweight mechanisms, often REST • Written in different programming languages • Use different data storage technologies 4
- 5. Why Microservices? • ScalingAgility • Migrating Legacy Applications • Sustainable Development Speed • Continuous Delivery • Independent Scalability • Technology Freedom 5
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- 7. Who made thisthing? 7Robert Griesemer, Rob Pike and Ken Thompson
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- 9. Why Choose Golang •Performance • Multiple core • Concurrency • Compiled && portable • Clean syntax • Powerful standard library • Strong type • Open source 9
- 10. Go, Open Source DoLess. Enable More. https://blog.golang.org/open-source 10
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- 16. 16 How We MovedOur API From Ruby to Go and Saved Our Sanity
- 17. 17 ScaleDrone Websocket 平台從Node.js 轉換到 Golang
- 18. 18 HOW WE BUILTUBER ENGINEERING’S HIGHEST QUERY PER SECOND SERVICE USING GO
- 19. Companies currently usingGo throughout the world https://github.com/golang/go/wiki/GoUsers 19
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- 21. How to WriteGo Code https://golang.org/doc/code.html 21
- 22. Getting Started • Workspaces •GOPATH environment variable • Import paths • Your first program • Your first library • Package names • Testing 22
- 23. Workspaces • Src – containsGo source files • Pkg – contains package objects • Bin – contains executable commands 23
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- 25. GOPATH Variable $ mkdir$HOME/work $ export GOPATH=$HOME/work $ export PATH=$PATH:$GOPATH/bin 25
- 26. Import paths $ mkdir-p $GOPATH/src/github.com/user 26
- 27. Your first program $mkdir –p $GOPATH/src/github.com/user/hello $ touch $GOPATH/src/github.com/user/hello/hello.go 27
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- 29. Build and installpackage $ go install github.com/user/hello 29
- 30. You will findhello binary $GOPATH/bin/hello $HOME/work/bin/hello 30
- 31. Your first library $mkdir $GOPATH/src/github.com/user/stringutil 31
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- 37. Learn GoLang ForGreat Good Part: Unit Testing in Go https://goo.gl/WhAV5P 37
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- 43. Concurrency in go Goroutines 43
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- 49. 49 sets the maximumnumber of CPUs
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- 58. Command line inGo 58
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- 61. • Configuration – Yaml,JSON or INI format • Logger – Access and error log format – write file or output to console • Web API – JSON or XML format • App and System status – Memory, go version, uptime, response time … • Deployment / Upgrades – Docker image or binary file 61
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- 63. Configuration • Yaml – https://github.com/go-gas/config •INI – https://github.com/go-ini/ini • JSON – https://github.com/spf13/viper 63
- 64. Logger Structured, pluggable loggingfor Go. https://github.com/Sirupsen/logrus 64
- 65. Build HTTP API WhyYou No Framework? https://goo.gl/ZlMtpN 65
- 66. Web Framework • Gin •Echo • Httprouter • Mux • Go-json-rest • Gas 66
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- 70. Golang Testing Tool Justone command 70
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- 73. go test –v–cover 73
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- 75. To run onlyspecific test go test –run xxxxx 75
- 76. Tesing Coverage forgo go test –coverprofile=covergae.out 76
- 77. Viewing the results gotool cover –html=coverage.out 77
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- 79. linter for Gosource code golint -set_exit_status package https://github.com/golang/lint 79
- 80. Gofmt formats Goprograms. go list ./... | grep -v vendor | xargs go fmt https://golang.org/cmd/gofmt/ 80
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- 84. Testing Reporting Convert gotest output to junit xml https://github.com/jstemmer/go-junit-report 84
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- 91. Run test formultiple package? 91 +
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- 93. Docker image includesGolang coverage tools for testing https://github.com/appleboy/golang-testing 93
- 94. Feature • Convert gotest output to junit xml • Coverage testing tool • XML (Cobertura) export • Linter for Go source code • Package Management for Golang • Testing multiple Golang package 94
- 95. Testing without Docker Downloadcoverage script and copy to bin folder 95
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- 97. Run docker command 97 dockerrun --rm -v $(PWD):$PROJECT_PATH -w=$PROJECT_PATH appleboy/golang-testing sh -c ”make install && coverage all"
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- 99. docker-compose config docker-compose rungolang- testing docker-compose down 99
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- 105. Output all reportfiles 105 Xml and txt format
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- 108. Build Go binarycommand 108
- 109. Go build command 109 GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go build -ldflags="-s -w -X main.Version=${v}" -o bin/hello go-hello
- 110. 110 Prepare golang Docker image Build go file Addbin file to Docker image Deploy image to Docker registry
- 111. 111 Prepare golang Docker image Build go file Addbin file to Docker image Deploy image to Docker registry
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- 113. 113 Clone source intodocker
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- 116. Prepare Docker Image dockerbuild -t $(IMAGE) -f Dockerfile.build . 116
- 117. 117 Prepare golang Docker image Build go file Addbin file to Docker image Deploy image to Docker registry
- 118. Output binary file dockerrun $(BUILD_IMAGE) > build.tar.gz 118
- 119. 119 Prepare golang Docker image Build go file Addbin file to Docker image Deploy image to Docker registry
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- 122. Build production image dockerbuild –t hello-world -f Dockerfile.dist . 122
- 123. Test your productionimage docker run -d -p 8088:8000 hello-world 123
- 124. 124 Prepare golang Docker image Build go file Addbin file to Docker image Deploy image to Docker registry docker push $(ACCOUNT)/$(IMAGE):$(tag)
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Editor's Notes
- #21 https://medium.com/@tjholowaychuk/farewell-node-js-4ba9e7f3e52b#.ytdscr9d0