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|
package main
import (
"fmt"
"os"
"os/exec"
"strings"
"github.com/edwarnicke/exechelper"
)
var (
workDir, _ = os.Getwd()
)
type Volume struct {
hostDir string
containerDir string
isDefaultWorkDir bool
}
type Container struct {
suite *HstSuite
isOptional bool
name string
image string
extraRunningArgs string
volumes map[string]Volume
envVars map[string]string
vppInstance *VppInstance
}
func NewContainer(yamlInput ContainerConfig) (*Container, error) {
containerName := yamlInput["name"].(string)
if len(containerName) == 0 {
err := fmt.Errorf("container name must not be blank")
return nil, err
}
var container = new(Container)
container.volumes = make(map[string]Volume)
container.envVars = make(map[string]string)
container.name = containerName
if image, ok := yamlInput["image"]; ok {
container.image = image.(string)
} else {
container.image = "hs-test/vpp"
}
if args, ok := yamlInput["extra-args"]; ok {
container.extraRunningArgs = args.(string)
} else {
container.extraRunningArgs = ""
}
if isOptional, ok := yamlInput["is-optional"]; ok {
container.isOptional = isOptional.(bool)
} else {
container.isOptional = false
}
if _, ok := yamlInput["volumes"]; ok {
r := strings.NewReplacer("$HST_DIR", workDir)
for _, volu := range yamlInput["volumes"].([]interface{}) {
volumeMap := volu.(ContainerConfig)
hostDir := r.Replace(volumeMap["host-dir"].(string))
containerDir := volumeMap["container-dir"].(string)
isDefaultWorkDir := false
if isDefault, ok := volumeMap["is-default-work-dir"]; ok {
isDefaultWorkDir = isDefault.(bool)
}
container.addVolume(hostDir, containerDir, isDefaultWorkDir)
}
}
if _, ok := yamlInput["vars"]; ok {
for _, envVar := range yamlInput["vars"].([]interface{}) {
envVarMap := envVar.(ContainerConfig)
name := envVarMap["name"].(string)
value := envVarMap["value"].(string)
container.addEnvVar(name, value)
}
}
return container, nil
}
func (c *Container) Suite() *HstSuite {
return c.suite
}
func (c *Container) getWorkDirVolume() (res Volume, exists bool) {
for _, v := range c.volumes {
if v.isDefaultWorkDir {
res = v
exists = true
return
}
}
return
}
func (c *Container) GetHostWorkDir() (res string) {
if v, ok := c.getWorkDirVolume(); ok {
res = v.hostDir
}
return
}
func (c *Container) GetContainerWorkDir() (res string) {
if v, ok := c.getWorkDirVolume(); ok {
res = v.containerDir
}
return
}
func (c *Container) getRunCommand() string {
cmd := "docker run --cap-add=all -d --privileged --network host --rm"
cmd += c.getVolumesAsCliOption()
cmd += c.getEnvVarsAsCliOption()
cmd += " --name " + c.name + " " + c.image + " " + c.extraRunningArgs
return cmd
}
func (c *Container) run() error {
if c.name == "" {
return fmt.Errorf("run container failed: name is blank")
}
cmd := c.getRunCommand()
err := exechelper.Run(cmd)
if err != nil {
return fmt.Errorf("container run failed: %s", err)
}
return nil
}
func (c *Container) addVolume(hostDir string, containerDir string, isDefaultWorkDir bool) {
var volume Volume
volume.hostDir = hostDir
volume.containerDir = containerDir
volume.isDefaultWorkDir = isDefaultWorkDir
c.volumes[hostDir] = volume
}
func (c *Container) getVolumesAsCliOption() string {
cliOption := ""
if len(c.volumes) > 0 {
for _, volume := range c.volumes {
cliOption += fmt.Sprintf(" -v %s:%s", volume.hostDir, volume.containerDir)
}
}
return cliOption
}
func (c *Container) addEnvVar(name string, value string) {
c.envVars[name] = value
}
func (c *Container) getEnvVarsAsCliOption() string {
cliOption := ""
if len(c.envVars) == 0 {
return cliOption
}
for name, value := range c.envVars {
cliOption += fmt.Sprintf(" -e %s=%s", name, value)
}
return cliOption
}
func (c *Container) newVppInstance(additionalConfig ...Stanza) (*VppInstance, error) {
vpp := new(VppInstance)
vpp.container = c
if len(additionalConfig) > 0 {
vpp.additionalConfig = additionalConfig[0]
}
c.vppInstance = vpp
return vpp, nil
}
func (c *Container) copy(sourceFileName string, targetFileName string) error {
cmd := exec.Command("docker", "cp", sourceFileName, c.name+":"+targetFileName)
return cmd.Run()
}
func (c *Container) createFile(destFileName string, content string) error {
f, err := os.CreateTemp("/tmp", "hst-config")
if err != nil {
return err
}
defer os.Remove(f.Name())
if _, err := f.Write([]byte(content)); err != nil {
return err
}
if err := f.Close(); err != nil {
return err
}
c.copy(f.Name(), destFileName)
return nil
}
/*
* Executes in detached mode so that the started application can continue to run
* without blocking execution of test
*/
func (c *Container) execServer(command string, arguments ...any) {
serverCommand := fmt.Sprintf(command, arguments...)
containerExecCommand := "docker exec -d" + c.getEnvVarsAsCliOption() +
" " + c.name + " " + serverCommand
c.Suite().log(containerExecCommand)
c.Suite().assertNil(exechelper.Run(containerExecCommand))
}
func (c *Container) exec(command string, arguments ...any) string {
cliCommand := fmt.Sprintf(command, arguments...)
containerExecCommand := "docker exec" + c.getEnvVarsAsCliOption() +
" " + c.name + " " + cliCommand
c.Suite().log(containerExecCommand)
byteOutput, err := exechelper.CombinedOutput(containerExecCommand)
c.Suite().assertNil(err)
return string(byteOutput)
}
func (c *Container) stop() error {
if c.vppInstance != nil && c.vppInstance.apiChannel != nil {
c.vppInstance.disconnect()
}
c.vppInstance = nil
return exechelper.Run("docker stop " + c.name + " -t 0")
}
|
