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Squash []map[string]type for port_map and labels into map[string]type

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This commit is contained in:
Chris Bednarski 2015-11-19 21:29:37 -08:00
parent 275550dcd3
commit cf4bb4cfd0
4 changed files with 87 additions and 26 deletions
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38
client/driver/docker.go
View file

@ -37,12 +37,14 @@ type DockerDriverConfig struct {
Command string `mapstructure:"command"` // The Command/Entrypoint to run when the container starts up
Args []string `mapstructure:"args"` // The arguments to the Command/Entrypoint
NetworkMode string `mapstructure:"network_mode"` // The network mode of the container - host, net and none
PortMap []map[string]int `mapstructure:"port_map"` // A map of host port labels and the ports exposed on the container
PortMapRaw []map[string]int `mapstructure:"port_map"` //
PortMap map[string]int `mapstructure:"-"` // A map of host port labels and the ports exposed on the container
Privileged bool `mapstructure:"privileged"` // Flag to run the container in priviledged mode
DNSServers []string `mapstructure:"dns_servers"` // DNS Server for containers
DNSSearchDomains []string `mapstructure:"dns_search_domains"` // DNS Search domains for containers
Hostname string `mapstructure:"hostname"` // Hostname for containers
Labels []map[string]string `mapstructure:"labels"` // Labels to set when the container starts up
LabelsRaw []map[string]string `mapstructure:"labels"` //
Labels map[string]string `mapstructure:"-"` // Labels to set when the container starts up
Auth []DockerDriverAuth `mapstructure:"auth"` // Authentication credentials for a private Docker registry
}
@ -51,13 +53,9 @@ func (c *DockerDriverConfig) Validate() error {
return fmt.Errorf("Docker Driver needs an image name")
}
if len(c.PortMap) > 1 {
return fmt.Errorf("Only one port_map block is allowed in the docker driver config")
}
c.PortMap = mapMergeStrInt(c.PortMapRaw...)
c.Labels = mapMergeStrStr(c.LabelsRaw...)
if len(c.Labels) > 1 {
return fmt.Errorf("Only one labels block is allowed in the docker driver config")
}
return nil
}
@ -239,7 +237,7 @@ func (d *DockerDriver) createContainer(ctx *ExecContext, task *structs.Task, dri
// Setup port mapping and exposed ports
if len(task.Resources.Networks) == 0 {
d.logger.Println("[DEBUG] driver.docker: No network interfaces are available")
if len(driverConfig.PortMap) == 1 && len(driverConfig.PortMap[0]) > 0 {
if len(driverConfig.PortMap) > 0 {
return c, fmt.Errorf("Trying to map ports but no network interface is available")
}
} else {
@ -253,11 +251,8 @@ func (d *DockerDriver) createContainer(ctx *ExecContext, task *structs.Task, dri
containerPortInt := port.Value
// If the user has mapped a port using port_map we'll change it here
if len(driverConfig.PortMap) == 1 {
mapped, ok := driverConfig.PortMap[0][port.Label]
if ok {
containerPortInt = mapped
}
if mapped, ok := driverConfig.PortMap[port.Label]; ok {
containerPortInt = mapped
}
hostPortStr := strconv.Itoa(port.Value)
@ -277,11 +272,8 @@ func (d *DockerDriver) createContainer(ctx *ExecContext, task *structs.Task, dri
containerPortInt := port.Value
// If the user has mapped a port using port_map we'll change it here
if len(driverConfig.PortMap) == 1 {
mapped, ok := driverConfig.PortMap[0][port.Label]
if ok {
containerPortInt = mapped
}
if mapped, ok := driverConfig.PortMap[port.Label]; ok {
containerPortInt = mapped
}
hostPortStr := strconv.Itoa(port.Value)
@ -302,8 +294,8 @@ func (d *DockerDriver) createContainer(ctx *ExecContext, task *structs.Task, dri
// TODO refactor the implementation in TaskEnvironmentVariables to match
// the 0.2 ports world view. Docker seems to be the only place where
// this is actually needed, but this is kinda hacky.
if len(driverConfig.PortMap) == 1 {
env.SetPorts(network.MapLabelToValues(driverConfig.PortMap[0]))
if len(driverConfig.PortMap) > 0 {
env.SetPorts(network.MapLabelToValues(driverConfig.PortMap))
}
hostConfig.PortBindings = publishedPorts
config.ExposedPorts = exposedPorts
@ -324,8 +316,8 @@ func (d *DockerDriver) createContainer(ctx *ExecContext, task *structs.Task, dri
d.logger.Println("[DEBUG] driver.docker: ignoring command arguments because command is not specified")
}
if len(driverConfig.Labels) == 1 {
config.Labels = driverConfig.Labels[0]
if len(driverConfig.Labels) > 0 {
config.Labels = driverConfig.Labels
d.logger.Printf("[DEBUG] driver.docker: applied labels on the container: %+v", config.Labels)
}

7
client/driver/docker_test.go
View file

@ -5,6 +5,7 @@ import (
"io/ioutil"
"path/filepath"
"reflect"
"runtime/debug"
"testing"
"time"
@ -92,7 +93,7 @@ func dockerSetup(t *testing.T, task *structs.Task) (*docker.Client, DriverHandle
client, err := docker.NewClientFromEnv()
if err != nil {
t.Fatalf("err: %v", err)
t.Fatalf("Failed to initialize client: %s\nStack\n%s", err, debug.Stack())
}
driverCtx := testDockerDriverContext(task.Name)
@ -102,11 +103,11 @@ func dockerSetup(t *testing.T, task *structs.Task) (*docker.Client, DriverHandle
handle, err := driver.Start(ctx, task)
if err != nil {
ctx.AllocDir.Destroy()
t.Fatalf("err: %v", err)
t.Fatalf("Failed to start driver: %s\nStack\n%s", err, debug.Stack())
}
if handle == nil {
ctx.AllocDir.Destroy()
t.Fatalf("missing handle")
t.Fatalf("handle is nil\nStack\n%s", debug.Stack())
}
cleanup := func() {

20
client/driver/driver.go
View file

@ -145,3 +145,23 @@ func TaskEnvironmentVariables(ctx *ExecContext, task *structs.Task) environment.
return env
}
func mapMergeStrInt(maps ...map[string]int) map[string]int {
out := map[string]int{}
for _, in := range maps {
for key, val := range in {
out[key] = val
}
}
return out
}
func mapMergeStrStr(maps ...map[string]string) map[string]string {
out := map[string]string{}
for _, in := range maps {
for key, val := range in {
out[key] = val
}
}
return out
}

48
client/driver/driver_test.go
View file

@ -99,3 +99,51 @@ func TestDriver_TaskEnvironmentVariables(t *testing.T) {
t.Fatalf("TaskEnvironmentVariables(%#v, %#v) returned %#v; want %#v", ctx, task, act, exp)
}
}
func TestMapMergeStrInt(t *testing.T) {
a := map[string]int{
"cakes": 5,
"cookies": 3,
}
b := map[string]int{
"cakes": 3,
"pies": 2,
}
c := mapMergeStrInt(a, b)
d := map[string]int{
"cakes": 3,
"cookies": 3,
"pies": 2,
}
if !reflect.DeepEqual(c, d) {
t.Errorf("\nExpected\n%+v\nGot\n%+v\n", d, c)
}
}
func TestMapMergeStrStr(t *testing.T) {
a := map[string]string{
"cake": "chocolate",
"cookie": "caramel",
}
b := map[string]string{
"cake": "strawberry",
"pie": "apple",
}
c := mapMergeStrStr(a, b)
d := map[string]string{
"cake": "strawberry",
"cookie": "caramel",
"pie": "apple",
}
if !reflect.DeepEqual(c, d) {
t.Errorf("\nExpected\n%+v\nGot\n%+v\n", d, c)
}
}