bsdpot#55 adding aliases as pot driver attribute

driver/driver.go

@@ -71,6 +71,7 @@ var (
 		"mount_read_only": hclspec.NewAttr("mount_read_only", "list(string)", false),
 		"extra_hosts":     hclspec.NewAttr("extra_hosts", "list(string)", false),
 		"attributes":      hclspec.NewAttr("attributes", "list(string)", false),
+		"aliases":         hclspec.NewAttr("aliases", "list(string)", false),
 	})
 
 	// capabilities is returned by the Capabilities RPC and indicates what
@@ -142,6 +143,7 @@ type TaskConfig struct {
 	Copy          []string `codec:"copy"`            // Files in host to copy in, syntax: /path/to/host/file.ext:/destination/path/in/container/file.ext
 	ExtraHosts    []string `codec:"extra_hosts"`     // ExtraHosts a list of hosts, given as host:IP, to be added to /etc/hosts
 	Attributes    []string `codec:"attributes"`     // Pot attributes, syntax: Attribute:Value
+	Aliases       []string `codec:"aliases"`      // List of pot aliases
 }
 
 // TaskState is the state which is encoded in the handle returned in

driver/pot.go

@@ -36,6 +36,7 @@ type syexec struct {
 	argvMem           string
 	argvEnv           string
 	argvExtraHosts    string
+	argvAliases       string
 	argvStart         []string
 	argvStats         []string
 	argvLastRunStats  []string
@@ -306,6 +307,16 @@ func (s *syexec) createContainer(commandCfg *drivers.TaskConfig) error {
 		return errors.New(string(message))
 	}
 
+	// Setting aliases for the pot 
+	aliasesMessage := "Setting pot aliases: " + s.argvAliases
+	s.logger.Debug(aliasesMessage)
+
+	_, err = exec.Command("sh", "-c", s.argvAliases).Output()
+	if err != nil {
+		message := "Error setting aliases for pot with err: " + err.Error()
+		return errors.New(string(message))
+	}
+
 	//Set memory limit for pot
 	message := "Setting memory soft limit on jail: " + s.argvMem
 	s.logger.Debug(message)

driver/prepare.go

@@ -153,6 +153,13 @@ func prepareContainer(cfg *drivers.TaskConfig, taskCfg TaskConfig) (syexec, erro
 		se.argvExtraHosts = hostCommand
 	}
 
+	if len(taskCfg.Aliases) > 0 {
+		aliasesCommand := shellescape.Quote(potBIN) + " set-aliases -p " + shellescape.Quote(potName)
+		for _, alias := range taskCfg.Aliases {
+			aliasesCommand = aliasesCommand + " -A " + shellescape.Quote(alias)
+		}
+		se.argvAliases = aliasesCommand
+	}
 	//Set soft memory limit
 	memoryLimit := cfg.Resources.NomadResources.Memory.MemoryMB
 	sMemoryLimit := strconv.FormatInt(memoryLimit, 10)