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chef-mode.el
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chef-mode.el
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;;; chef-mode.el --- minor mode for editing an opscode chef repository
;; Copyright (C) 2011 Maciej Pasternacki
;; Author: Maciej Pasternacki <maciej@pasternacki.net>
;; Created: 28 Aug 2011
;; Version: 0.1
;; Keywords: chef knife
;; This file is NOT part of GNU Emacs.
;;; License:
;; Copyright (c) 2011, Maciej Pasternacki <maciej@pasternacki.net>
;; All rights reserved.
;; Redistribution and use in source and binary forms, with or without
;; modification, are permitted provided that the following conditions are met:
;; * Redistributions of source code must retain the above copyright
;; notice, this list of conditions and the following disclaimer.
;; * Redistributions in binary form must reproduce the above copyright
;; notice, this list of conditions and the following disclaimer in the
;; documentation and/or other materials provided with the distribution.
;; * Neither the name of the copyright holder nor the
;; names of its contributors may be used to endorse or promote products
;; derived from this software without specific prior written permission.
;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
;; ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
;; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
;; DISCLAIMED. IN NO EVENT SHALL MACIEJ PASTERNACKI BE LIABLE FOR ANY
;; DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
;; (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
;; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
;; ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
;; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
;; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
;;; Commentary:
;; This library defines a minor mode to work with Opscode Chef
;; (http://www.opscode.com/chef/) repository. It creates two
;; keybindings:
;; - C-c C-c (M-x chef-knife-dwim) - when editing part of chef
;; repository (cookbook, data bag item, node/role/environment
;; definition), uploads that part to the Chef Server by calling
;; appropriate knife command
;; - C-c C-k (M-x knife) - runs a user-specified knife command
;; The library detects bundler and, if Gemfile is present on top-level
;; of the Chef repository, runs 'bundle exec knife' instead of plain
;; 'knife'.
;; If chef-use-rvm is non-nil, it talks with rvm.el
;; (https://github.com/senny/rvm.el) to use proper Ruby and gemset.
;;; Code:
(defvar chef-knife-command "knife"
"Knife command to run")
(defvar chef-use-bundler t
"Use `bundle exec knife' if Gemfile exists")
(defvar chef-use-rvm t
"If non-nil, require rvm.el and call rvm-activate-corresponding-ruby on chef repo root before calling knife")
(defvar chef-mode-map (make-sparse-keymap)
"Key map for chef-mode")
(define-key chef-mode-map (kbd "\C-c \C-k") 'knife)
(define-key chef-mode-map (kbd "\C-c \C-c") 'chef-knife-dwim)
(define-minor-mode chef-mode
"Mode for interacting with Opscode Chef"
nil chef-mode-map)
(defun turn-on-chef-mode ()
"Enable chef-mode."
(chef-mode 1))
(define-globalized-minor-mode global-chef-mode
chef-mode turn-on-chef-mode)
(defun find-chef-root (&optional path)
(when (null path)
(setq path (or buffer-file-name
default-directory)))
(cond
((not (file-directory-p path))
(find-chef-root (concat (file-name-as-directory path) "..")))
((equal (expand-file-name path) (expand-file-name "~")) nil)
((equal (expand-file-name path) "/") nil)
((let ((ff (directory-files path)))
(or (member ".chef" ff)
(and (member "cookbooks" ff)
(member "roles" ff)
(member "config" ff))))
(file-name-as-directory (expand-file-name path)))
(t (find-chef-root (concat (file-name-as-directory path) "..")))))
(defun chef/fallback (trigger)
(let* ((chef-mode nil)
(command (key-binding trigger)))
(when (commandp command)
(call-interactively command))))
(defmacro chef/with-root-or-fallback (trigger &rest body)
`(let ((chef-root (find-chef-root)))
(if (null chef-root)
(chef/fallback ,trigger)
,@body)))
(defun chef-run-knife (command &rest args)
(when chef-use-rvm
(rvm-activate-corresponding-ruby))
(let ((knife-buffer (get-buffer-create "*knife*"))
(use-bundler (and chef-use-bundler (file-exists-p "Gemfile"))))
(with-current-buffer knife-buffer
(setq default-directory chef-root)
(setq list-buffers-directory default-directory)
(special-mode)
(toggle-read-only 0)
(erase-buffer)
(insert (concat "# " default-directory "\n"
(when use-bundler
"bundle exec ")
chef-knife-command " " command " "
(mapconcat 'identity args " ")
"\n\n")))
(if use-bundler
(apply 'call-process
"bundle" nil knife-buffer
"bundle" "exec" chef-knife-command (cons command args))
(apply 'call-process
chef-knife-command nil knife-buffer
chef-knife-command (cons command args)))
(with-current-buffer knife-buffer
(toggle-read-only 1))
(switch-to-buffer-other-window knife-buffer t)
(fit-window-to-buffer)))
(defun knife (command)
"Run knife"
(interactive "Command: knife ")
(chef/with-root-or-fallback
(kbd "\C-c \C-k")
(apply 'chef-run-knife (split-string-and-unquote command))))
(defun chef-knife-dwim ()
"Upload currently edited thing to the Chef server.
Guesses whether you have "
(interactive)
(chef/with-root-or-fallback
(kbd "\C-c \C-c")
(let ((b (current-buffer)))
(save-some-buffers nil (lambda ()
(eq b (current-buffer)))))
(if buffer-file-name
(let ((default-directory chef-root)
(rpath (file-relative-name buffer-file-name chef-root)))
(cond
((string-match "^\\(?:site-\\)?cookbooks/\\([^/]+\\)/" rpath)
(print (match-string 1 rpath))
(chef-run-knife "cookbook" "upload" (match-string 1 rpath)))
((string-match "^\\(role\\|node\\|environment\\)s/\\(.*\\)" rpath)
(chef-run-knife (match-string 1 rpath) "from" "file" (match-string 2 rpath)))
((string-match "^data.bags/\\([^/]+\\)/\\(.*\\.yaml\\)" rpath)
(chef-run-knife "data" "bag" "from" "yaml" (match-string 1 rpath) (match-string 2 rpath)))
((string-match "^data.bags/\\([^/]+\\)/\\(.*\\)" rpath)
(chef-run-knife "data" "bag" "from" "file" (match-string 1 rpath) (match-string 2 rpath)))
(t (chef/fallback (kbd "\C-c \C-c")))))
(chef/fallback (kbd "\C-c \C-c")))))
(defun chef-resource-lookup ()
"Open the documentation in a browser for the chef resource at point"
(interactive)
(let* ((base "http://wiki.opscode.com/display/chef/Resources")
(anchor "#Resources-")
(tbl '(
("cookbook_file" . "CookbookFile")
("cron" . "Cron")
("deploy" . "Deploy")
("directory" . "Directory")
("env" . "Env")
("erl_call" . "ErlangCall")
("execute" . "Execute")
("file" . "File")
("git" . "Git")
("group" . "Group")
("http_request" . "HTTPRequest")
("ifconfig" . "Ifconfig")
("link" . "Link")
("log" . "Log")
("mdadm" . "Mdadm")
("mount" . "Mount")
("ohai" . "Ohai")
("package" . "Package")
("apt_package" . "Package")
("dpkg_package" . "Package")
("easy_install_package" . "Package")
("freebsd_package" . "Package")
("macports_package" . "Package")
("portage_package" . "Package")
("rpm_package" . "Package")
("gem_package" . "Package")
("yum_package" . "Package")
("zypper_package" . "Package")
("powershell" . "PowerShellScript")
("remote_directory" . "RemoteDirectory")
("remote_file" . "RemoteFile")
("route" . "Route")
("ruby_block" . "RubyBlock")
("scm" . "SCM")
("script" . "Script")
("bash" . "Script")
("csh" . "Script")
("perl" . "Script")
("python" . "Script")
("ruby" . "Script")
("service" . "Service")
("subversion" . "Subversion")
("template" . "Template")
("user" . "User")
))
(target (assoc-string (symbol-at-point) tbl)))
(if target
(browse-url (concat base anchor (cdr target)))
(browse-url base))))
(provide 'chef-mode)
;;; chef-mode.el ends here