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docker-context.el
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;;; docker-context.el --- Interface to docker-context -*- lexical-binding: t -*-
;; Author: Pablo González Carrizo <[email protected]>
;; This file is NOT part of GNU Emacs.
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 3, or (at your option)
;; any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Commentary:
;;; Code:
(eval-when-compile
(setq-local byte-compile-warnings '(not docstrings)))
(require 's)
(require 'aio)
(require 'dash)
(require 'json)
(require 'tablist)
(require 'transient)
(require 'docker-core)
(require 'docker-faces)
(require 'docker-utils)
(defgroup docker-context nil
"Docker context customization group."
:group 'docker)
(defconst docker-context-id-template
"{{ json .Name }}"
"This Go template extracts the context id which will be passed to transient commands.")
(defcustom docker-context-default-sort-key '("Name" . nil)
"Sort key for docker contexts.
This should be a cons cell (NAME . FLIP) where
NAME is a string matching one of the column names
and FLIP is a boolean to specify the sort order."
:group 'docker-context
:type '(cons (string :tag "Column Name"
:validate (lambda (widget)
(unless (--any-p (equal (plist-get it :name) (widget-value widget)) docker-context-columns)
(widget-put widget :error "Default Sort Key must match a column name")
widget)))
(choice (const :tag "Ascending" nil)
(const :tag "Descending" t))))
(defcustom docker-context-columns
'((:name "Name" :width 40 :template "{{ json .Name }}" :sort nil :format nil)
(:name "Description" :width 40 :template "{{ json .Description }}" :sort nil :format nil)
(:name "Endpoint" :width 40 :template "{{ json .DockerEndpoint }}" :sort nil :format nil))
"Column specification for docker contexts.
The order of entries defines the displayed column order.
'Template' is the Go template passed to `docker-context-ls' to create the column
data. It should return a string delimited with double quotes.
'Sort function' is a binary predicate that should return true when the first
argument should be sorted before the second.
'Format function' is a function from string to string that transforms the
displayed values in the column."
:group 'docker-context
:set 'docker-utils-columns-setter
:get 'docker-utils-columns-getter
:type '(repeat (list :tag "Column"
(string :tag "Name")
(integer :tag "Width")
(string :tag "Template")
(sexp :tag "Sort function")
(sexp :tag "Format function"))))
(aio-defun docker-context-inspect ()
"Run \"`docker-command' context inspect\" on the selected items."
(interactive)
(docker-inspect "context"))
(aio-defun docker-context-entries (&rest args)
"Return the docker contexts data for `tabulated-list-entries'."
(let* ((fmt (docker-utils-make-format-string docker-context-id-template docker-context-columns))
(data (aio-await (docker-run-docker-async "context" "ls" args (format "--format=\"%s\"" fmt))))
(lines (s-split "\n" data t)))
(-map (-partial #'docker-utils-parse docker-context-columns) lines)))
(aio-defun docker-context-active-name (&rest args)
(let* ((fmt "{{ json .Current }} {{ json .Name }}")
(data (aio-await (docker-run-docker-async "context" "ls" args (format "--format=\"%s\"" fmt))))
(lines (s-split "\n" data t))
(active-line (-first (lambda (line) (string-match-p "true" (car (s-split " " line)))) lines)))
(when active-line
(cadr (split-string active-line "\"")))))
(aio-defun docker-context-entries-propertized (&rest args)
"Return the propertized docker contexts data for `tabulated-list-entries'."
(let ((entries (aio-await (docker-context-entries args)))
(active (aio-await (docker-context-active-name args))))
(--map-when (string= active (car it)) (docker-context-entry-set-active it) entries)))
(defun docker-context-entry-set-active (entry)
"Mark ENTRY (output of `docker-context-entries') as active.
The result is the tabulated list id for an entry is propertized with
'docker-context-active and the entry is fontified with 'docker-face-active."
(list (propertize (car entry) 'docker-context-active t)
(apply #'vector (--map (propertize it 'font-lock-face 'docker-face-active) (cadr entry)))))
(aio-defun docker-context-update-status-async ()
"Write the status to `docker-status-strings'."
(plist-put docker-status-strings :contexts "Contexts")
(when (or (eq docker-show-status t) (and (eq docker-show-status 'local-only) (not (file-remote-p default-directory))))
(let* ((entries (aio-await (docker-context-entries-propertized (docker-context-ls-arguments)))))
(plist-put docker-status-strings
:contexts
(format "Context (%s total)" (number-to-string (length entries))))
(transient--redisplay))))
(add-hook 'docker-open-hook #'docker-context-update-status-async)
(aio-defun docker-context-refresh ()
"Refresh the contexts list."
(docker-utils-refresh-entries
(docker-context-entries-propertized (docker-context-ls-arguments))))
(docker-utils-define-transient-arguments docker-context-ls)
(docker-utils-transient-define-prefix docker-context-rm ()
"Transient for removing contexts."
:man-page "docker-context-rm"
[:description docker-generic-action-description
("D" "Remove" docker-generic-action-multiple-ids)])
(docker-utils-transient-define-prefix docker-context-use ()
"Transient for using contexts."
:man-page "docker-context-use"
[:description docker-generic-action-description
("X" "Use" docker-generic-action)])
(transient-define-prefix docker-context-help ()
"Help transient for docker contexts."
["Docker contexts help"
("D" "Remove" docker-context-rm)
("I" "Inspect" docker-context-inspect)
("X" "Use" docker-context-use)])
(defvar docker-context-mode-map
(let ((map (make-sparse-keymap)))
(define-key map "?" 'docker-context-help)
(define-key map "D" 'docker-context-rm)
(define-key map "I" 'docker-context-inspect)
(define-key map "X" 'docker-context-use)
map)
"Keymap for `docker-context-mode'.")
;;;###autoload (autoload 'docker-contexts "docker-context" nil t)
(defun docker-contexts ()
"List docker contexts."
(interactive)
(docker-utils-pop-to-buffer "*docker-contexts*")
(docker-context-mode)
(tablist-revert))
(define-derived-mode docker-context-mode tabulated-list-mode "Contexts Menu"
"Major mode for handling a list of docker contexts."
(setq tabulated-list-format (docker-utils-columns-list-format docker-context-columns))
(setq tabulated-list-padding 2)
(setq tabulated-list-sort-key docker-context-default-sort-key)
(add-hook 'tabulated-list-revert-hook 'docker-context-refresh nil t)
(tabulated-list-init-header)
(tablist-minor-mode))
(provide 'docker-context)
;;; docker-context.el ends here