Golang Config.AddScripts方法代码示例

// addAgentInfo adds agent-required information to the agent's directory
// and returns the agent directory name.
func (cfg *MachineConfig) addAgentInfo(c *cloudinit.Config, tag string) (*agent.Conf, error) {
	acfg := cfg.agentConfig(tag)
	cmds, err := acfg.WriteCommands()
	if err != nil {
		return nil, err
	}
	c.AddScripts(cmds...)
	return acfg, nil
}

func (cfg *MachineConfig) addMachineAgentToBoot(c *cloudinit.Config, tag, machineId, logConfig string) error {
	// Make the agent run via a symbolic link to the actual tools
	// directory, so it can upgrade itself without needing to change
	// the upstart script.
	toolsDir := tools.ToolsDir(cfg.DataDir, tag)
	// TODO(dfc) ln -nfs, so it doesn't fail if for some reason that the target already exists
	c.AddScripts(fmt.Sprintf("ln -s %v %s", cfg.Tools.Version, shquote(toolsDir)))

	name := "jujud-" + tag
	conf := upstart.MachineAgentUpstartService(name, toolsDir, cfg.DataDir, "/var/log/juju/", tag, machineId, logConfig, cfg.MachineEnvironment)
	cmds, err := conf.InstallCommands()
	if err != nil {
		return fmt.Errorf("cannot make cloud-init upstart script for the %s agent: %v", tag, err)
	}
	c.AddScripts(cmds...)
	return nil
}

func (cfg *MachineConfig) addMongoToBoot(c *cloudinit.Config) error {
	dbDir := filepath.Join(cfg.DataDir, "db")
	c.AddScripts(
		"mkdir -p "+dbDir+"/journal",
		// Otherwise we get three files with 100M+ each, which takes time.
		"dd bs=1M count=1 if=/dev/zero of="+dbDir+"/journal/prealloc.0",
		"dd bs=1M count=1 if=/dev/zero of="+dbDir+"/journal/prealloc.1",
		"dd bs=1M count=1 if=/dev/zero of="+dbDir+"/journal/prealloc.2",
	)

	conf := upstart.MongoUpstartService("juju-db", cfg.DataDir, dbDir, cfg.StatePort)
	cmds, err := conf.InstallCommands()
	if err != nil {
		return fmt.Errorf("cannot make cloud-init upstart script for the state database: %v", err)
	}
	c.AddScripts(cmds...)
	return nil
}

func Configure(cfg *MachineConfig, c *cloudinit.Config) (*cloudinit.Config, error) {
	if err := verifyConfig(cfg); err != nil {
		return nil, err
	}
	c.AddSSHAuthorizedKeys(cfg.AuthorizedKeys)
	c.AddPackage("git")
	// Perfectly reasonable to install lxc on environment instances and kvm
	// containers.
	if cfg.MachineContainerType != instance.LXC {
		c.AddPackage("lxc")
	}

	c.AddScripts(
		"set -xe", // ensure we run all the scripts or abort.
		fmt.Sprintf("mkdir -p %s", cfg.DataDir),
		"mkdir -p /var/log/juju")

	// Make a directory for the tools to live in, then fetch the
	// tools and unarchive them into it.
	c.AddScripts(
		"bin="+shquote(cfg.jujuTools()),
		"mkdir -p $bin",
		fmt.Sprintf("wget --no-verbose -O - %s | tar xz -C $bin", shquote(cfg.Tools.URL)),
		fmt.Sprintf("echo -n %s > $bin/downloaded-url.txt", shquote(cfg.Tools.URL)),
	)

	// TODO (thumper): work out how to pass the logging config to the children
	debugFlag := ""
	// TODO: disable debug mode by default when the system is stable.
	if true {
		debugFlag = " --debug"
	}

	if err := cfg.addLogging(c); err != nil {
		return nil, err
	}

	// We add the machine agent's configuration info
	// before running bootstrap-state so that bootstrap-state
	// has a chance to rerwrite it to change the password.
	// It would be cleaner to change bootstrap-state to
	// be responsible for starting the machine agent itself,
	// but this would not be backwardly compatible.
	machineTag := names.MachineTag(cfg.MachineId)
	_, err := cfg.addAgentInfo(c, machineTag)
	if err != nil {
		return nil, err
	}

	if cfg.StateServer {
		if cfg.NeedMongoPPA() {
			c.AddAptSource("ppa:juju/experimental", "1024R/C8068B11")
		}
		c.AddPackage("mongodb-server")
		certKey := string(cfg.StateServerCert) + string(cfg.StateServerKey)
		c.AddFile(cfg.dataFile("server.pem"), certKey, 0600)
		if err := cfg.addMongoToBoot(c); err != nil {
			return nil, err
		}
		// We temporarily give bootstrap-state a directory
		// of its own so that it can get the state info via the
		// same mechanism as other jujud commands.
		acfg, err := cfg.addAgentInfo(c, "bootstrap")
		if err != nil {
			return nil, err
		}
		c.AddScripts(
			fmt.Sprintf("echo %s > %s", shquote(cfg.StateInfoURL), BootstrapStateURLFile),
			cfg.jujuTools()+"/jujud bootstrap-state"+
				" --data-dir "+shquote(cfg.DataDir)+
				" --env-config "+shquote(base64yaml(cfg.Config))+
				" --constraints "+shquote(cfg.Constraints.String())+
				debugFlag,
			"rm -rf "+shquote(acfg.Dir()),
		)
	}

	if err := cfg.addMachineAgentToBoot(c, machineTag, cfg.MachineId, debugFlag); err != nil {
		return nil, err
	}

	// general options
	c.SetAptUpgrade(true)
	c.SetAptUpdate(true)
	c.SetOutput(cloudinit.OutAll, "| tee -a /var/log/cloud-init-output.log", "")
	return c, nil
}