Exemplo n.º 1
0
func (*DebugHooksClientSuite) TestClientScript(c *gc.C) {
	ctx := debug.NewHooksContext("foo/8")

	// Test the variable substitutions.
	result := debug.ClientScript(ctx, nil)
	// No variables left behind.
	c.Assert(result, gc.Matches, "[^{}]*")
	// tmux new-session -d -s {unit_name}
	c.Assert(result, gc.Matches, fmt.Sprintf("(.|\n)*tmux new-session -s %s(.|\n)*", regexp.QuoteMeta(ctx.Unit)))
	//) 9>{exit_flock}
	c.Assert(result, gc.Matches, fmt.Sprintf("(.|\n)*\\) 9>%s(.|\n)*", regexp.QuoteMeta(ctx.ClientExitFileLock())))
	//) 8>{entry_flock}
	c.Assert(result, gc.Matches, fmt.Sprintf("(.|\n)*\\) 8>%s(.|\n)*", regexp.QuoteMeta(ctx.ClientFileLock())))

	// nil is the same as empty slice is the same as "*".
	// Also, if "*" is present as well as a named hook,
	// it is equivalent to "*".
	c.Assert(debug.ClientScript(ctx, nil), gc.Equals, debug.ClientScript(ctx, []string{}))
	c.Assert(debug.ClientScript(ctx, []string{"*"}), gc.Equals, debug.ClientScript(ctx, nil))
	c.Assert(debug.ClientScript(ctx, []string{"*", "something"}), gc.Equals, debug.ClientScript(ctx, []string{"*"}))

	// debug.ClientScript does not validate hook names, as it doesn't have
	// a full state API connection to determine valid relation hooks.
	expected := fmt.Sprintf(
		`(.|\n)*echo "aG9va3M6Ci0gc29tZXRoaW5nIHNvbWV0aGluZ2Vsc2UK" | base64 -d > %s(.|\n)*`,
		regexp.QuoteMeta(ctx.ClientFileLock()),
	)
	c.Assert(debug.ClientScript(ctx, []string{"something somethingelse"}), gc.Matches, expected)
}
Exemplo n.º 2
0
// TestHooksContext tests the behaviour of HooksContext.
func (*DebugHooksCommonSuite) TestHooksContext(c *gc.C) {
	ctx := debug.NewHooksContext("foo/8")
	c.Assert(ctx.Unit, gc.Equals, "foo/8")
	c.Assert(ctx.FlockDir, gc.Equals, "/tmp")
	ctx.FlockDir = "/var/lib/juju"
	c.Assert(ctx.ClientFileLock(), gc.Equals, "/var/lib/juju/juju-unit-foo-8-debug-hooks")
	c.Assert(ctx.ClientExitFileLock(), gc.Equals, "/var/lib/juju/juju-unit-foo-8-debug-hooks-exit")
}
Exemplo n.º 3
0
// RunHook executes a hook in an environment which allows it to to call back
// into the hook context to execute jujuc tools.
func (ctx *HookContext) RunHook(hookName, charmDir, toolsDir, socketPath string) error {
	var err error
	env := ctx.hookVars(charmDir, toolsDir, socketPath)
	debugctx := unitdebug.NewHooksContext(ctx.unit.Name())
	if session, _ := debugctx.FindSession(); session != nil && session.MatchHook(hookName) {
		logger.Infof("executing %s via debug-hooks", hookName)
		err = session.RunHook(hookName, charmDir, env)
	} else {
		err = ctx.runCharmHook(hookName, charmDir, env)
	}
	return ctx.finalizeContext(hookName, err)
}
Exemplo n.º 4
0
// Run ensures c.Target is a unit, and resolves its address,
// and connects to it via SSH to execute the debug-hooks
// script.
func (c *DebugHooksCommand) Run(ctx *cmd.Context) error {
	var err error
	c.apiClient, err = c.initAPIClient()
	if err != nil {
		return err
	}
	defer c.apiClient.Close()
	err = c.validateHooks()
	if err != nil {
		return err
	}
	debugctx := unitdebug.NewHooksContext(c.Target)
	script := base64.StdEncoding.EncodeToString([]byte(unitdebug.ClientScript(debugctx, c.hooks)))
	innercmd := fmt.Sprintf(`F=$(mktemp); echo %s | base64 -d > $F; . $F`, script)
	args := []string{fmt.Sprintf("sudo /bin/bash -c '%s'", innercmd)}
	c.Args = args
	return c.SSHCommand.Run(ctx)
}