Go - 函数计算 - 阿里云

通过函数计算的Custom Runtime，您可以使用Go在函数计算平台编写函数。本文介绍快速部署和调用Go函数的详细步骤。您可以按需修改Go示例中的代码实现二次开发。

前提条件

您已完成以下操作：

操作步骤

在目标目录中，执行以下命令，初始化项目。
```
s init start-fc-custom-samples -d start-fc-custom-samples
```

执行以下命令，进入项目目录。

cd start-fc-custom-samples/golang/event-demo/

执行以下命令，安装依赖。

make build

执行输出：

docker build -t fc-go-runtime  -f build-image/Dockerfile build-image
Sending build context to Docker daemon  2.048kB
Step 1/5 : FROM golang:1.12.16-stretch
 ---> 7ad03a8aece5
Step 2/5 : RUN mkdir -p $GOPATH/src/golang.org/x/
 ---> Using cache
 ---> 8ae05c78f213
Step 3/5 : RUN cd $GOPATH/src/golang.org/x/ && git clone https://github.com/golang/net.git
 ---> Using cache
 ---> 4144ef5b258b
Step 4/5 : RUN cd $GOPATH/src/golang.org/x/ &&  git clone https://github.com/golang/sys.git
 ---> Using cache
 ---> d7bcb9bf6bda
Step 5/5 : RUN go get github.com/awesome-fc/golang-runtime
 ---> Running in 86b5b13ec231
Removing intermediate container 86b5b13ec231
 ---> c051b618c0ab
Successfully built c051b618c0ab
Successfully tagged fc-go-runtime:latest
docker run --rm -it -v $(pwd):/tmp fc-go-runtime bash -c "go build -o /tmp/code//bootstrap /tmp/code/main.go"
chmod +x code/bootstrap

执行以下命令，部署项目。

s deploy -y

输出示例：

[2021-09-09T17:28:46.906] [INFO ] [S-CLI] - Start ...
[2021-09-09T17:28:47.428] [INFO ] [FC-DEPLOY] - Using region: cn-hangzhou
[2021-09-09T17:28:47.429] [INFO ] [FC-DEPLOY] - Using access alias: default
[2021-09-09T17:28:47.429] [INFO ] [FC-DEPLOY] - Using accessKeyID: 188077086902****
[2021-09-09T17:28:47.430] [INFO ] [FC-DEPLOY] - Using accessKeySecret: LTAI4G4cwJkK4Rza6xd9****
  Using fc deploy type: sdk, If you want to deploy with pulumi, you can [s cli fc-default set deploy-type pulumi] to switch.
[2021-09-09T17:28:47.684] [INFO ] [FC-DEPLOY] - Checking Service custom-demo exists
[2021-09-09T17:28:47.901] [INFO ] [FC-DEPLOY] - Checking Function goEventFunc exists
  Make service custom-demo success.
  Make function custom-demo/goEventFunc success.
[2021-09-09T17:29:29.304] [INFO ] [FC-DEPLOY] - Checking Service custom-demo exists
[2021-09-09T17:29:29.365] [INFO ] [FC-DEPLOY] - Checking Function goEventFunc exists

Tips for next step
======================
* Display information of the deployed resource: s info
* Display metrics: s metrics
* Display logs: s logs
* Invoke remote function: s invoke
* Remove Service: s remove service
* Remove Function: s remove function
* Remove Trigger: s remove trigger
* Remove CustomDomain: s remove domain



custom-demo:
  region: cn-hangzhou
  service:
    name: custom-demo
  function:
    name: goEventFunc
    runtime: custom
    handler: main.handler
    memorySize: 512
    timeout: 30

执行以下命令，远程调用函数。

s invoke -e "{}"

输出示例：

[2021-09-09T17:30:32.509] [INFO ] [S-CLI] - Start ...
========= FC invoke Logs begin =========
FC Initialize Start RequestId: 1190d876-343a-41ae-a4e8-705192b1d6b8
2021-09-09T09:30:33.493Z: 1190d876-343a-41ae-a4e8-705192b1d6b8 [INFO]  init golang!
FC Initialize End RequestId: 1190d876-343a-41ae-a4e8-705192b1d6b8
FC Invoke Start RequestId: 1190d876-343a-41ae-a4e8-705192b1d6b8
2021-09-09T09:30:33.506Z: 1190d876-343a-41ae-a4e8-705192b1d6b8 [INFO]  hello golang!
FC Invoke End RequestId: 1190d876-343a-41ae-a4e8-705192b1d6b8

Duration: 5.74 ms, Billed Duration: 6 ms, Memory Size: 512 MB, Max Memory Used: 7.69 MB
========= FC invoke Logs end =========

FC Invoke Result:
{}


End of method: invoke