/
process.go
136 lines (112 loc) · 3.01 KB
/
process.go
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package service
import (
"context"
"errors"
"fmt"
"net/http"
"os"
"strings"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/container"
"github.com/docker/docker/api/types/network"
"github.com/docker/docker/client"
"github.com/docker/docker/pkg/stdcopy"
"github.com/gin-gonic/gin"
"github.com/google/uuid"
)
type _ProcessBody struct {
Code string `json:"code" binding:"required,max=5000"`
}
func _CleanupContainer(containerID string) {
cli, err := client.NewEnvClient()
if err != nil {
panic(err)
}
err = cli.ContainerRemove(context.TODO(), containerID, types.ContainerRemoveOptions{})
if err != nil {
panic(err)
}
}
func _Error(c *gin.Context, err error, wrapperMessage string) {
wrappedError := fmt.Errorf("%s: %w", wrapperMessage, err)
var returnedError error
if gin.Mode() == gin.DebugMode {
returnedError = wrappedError
} else {
returnedError = errors.New("an internal error occurred processing your request")
}
fmt.Fprintln(os.Stderr, wrappedError.Error())
c.JSON(http.StatusInternalServerError, gin.H{"error": returnedError.Error()})
}
func _ProcessPost(c *gin.Context) {
var body _ProcessBody
if err := c.ShouldBindJSON(&body); err != nil {
c.JSON(http.StatusUnprocessableEntity, gin.H{"error": err.Error()})
return
}
cli, err := client.NewEnvClient()
if err != nil {
c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
return
}
stopTimeout := 5
container, err := cli.ContainerCreate(
context.TODO(),
&container.Config{
Image: "nint8835/terraform-gatsby-service-worker",
StopTimeout: &stopTimeout,
Env: []string{fmt.Sprintf("TERRAFORM_SOURCE=%s", body.Code)},
NetworkDisabled: true,
},
&container.HostConfig{
Resources: container.Resources{
Memory: 128 * 1024 * 1024,
},
},
&network.NetworkingConfig{},
fmt.Sprintf("terraform-gatsby-service-%s", uuid.New().String()),
)
if err != nil {
_Error(c, err, "an error occurred while creating a worker container")
return
}
defer _CleanupContainer(container.ID)
err = cli.ContainerStart(
context.TODO(),
container.ID,
types.ContainerStartOptions{},
)
if err != nil {
_Error(c, err, "an error occurred while starting a worker container")
return
}
_, err = cli.ContainerWait(context.TODO(), container.ID)
if err != nil {
_Error(c, err, "an error occurred while waiting for a worker container to terminate")
return
}
logReader, err := cli.ContainerLogs(
context.TODO(),
container.ID,
types.ContainerLogsOptions{
ShowStderr: true,
ShowStdout: true,
},
)
if err != nil {
_Error(c, err, "an error occurred while reading logs from a worker container")
return
}
defer logReader.Close()
stdout := new(strings.Builder)
stderr := new(strings.Builder)
_, err = stdcopy.StdCopy(stdout, stderr, logReader)
if err != nil {
_Error(c, err, "an error occurred while processing logs from a worker container")
return
}
c.JSON(http.StatusOK, gin.H{
"stdout": stdout.String(),
"stderr": stderr.String(),
})
}