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3f6c5992 MW |
1 | #! /usr/bin/cl-launch -X -- |
2 | ;;; -*-lisp-*- | |
3 | ||
4 | (cl:defpackage #:ansible-inventory | |
5 | (:use #:common-lisp) | |
6 | (:import-from #:cl-launch #:*arguments*)) | |
7 | ||
8 | (in-package #:ansible-inventory) | |
9 | ||
10 | ;;;-------------------------------------------------------------------------- | |
11 | ;;; General utilities. | |
12 | ||
13 | (defun compose (&rest funcs) | |
14 | (reduce (lambda (f g) | |
15 | (lambda (&rest args) (multiple-value-call g (apply f args)))) | |
16 | funcs :initial-value #'values)) | |
17 | ||
18 | ;;;-------------------------------------------------------------------------- | |
19 | ;;; JSON machinery. | |
20 | ||
21 | (defvar *print-json-comma*) | |
22 | ||
23 | (defun print-json-itemstart () | |
24 | (cond (*print-json-comma* | |
25 | (princ ", ") | |
26 | (pprint-newline :linear)) | |
27 | (t | |
28 | (setf *print-json-comma* t)))) | |
29 | ||
30 | (defun print-json-map* (thunk) | |
31 | (print-json-itemstart) | |
32 | (princ "{ ") | |
33 | (pprint-indent :block 2) | |
34 | (pprint-newline :linear) | |
35 | (pprint-logical-block (*standard-output* nil) | |
36 | (let ((*print-json-comma* nil)) (funcall thunk))) | |
37 | (princ " ") | |
38 | (pprint-indent :block 0) | |
39 | (pprint-newline :linear) | |
40 | (princ "}")) | |
41 | ||
42 | (defmacro print-json-map (&body body) | |
43 | `(print-json-map* (lambda () ,@body))) | |
44 | ||
45 | (defun print-json-list* (thunk) | |
46 | (print-json-itemstart) | |
47 | (princ "[") | |
48 | (pprint-indent :block 2) | |
49 | (pprint-newline :linear) | |
50 | (pprint-logical-block (*standard-output* nil) | |
51 | (let ((*print-json-comma* nil)) (funcall thunk))) | |
52 | (pprint-indent :block 0) | |
53 | (pprint-newline :linear) | |
54 | (princ "]")) | |
55 | ||
56 | (defmacro print-json-list (&body body) | |
57 | `(print-json-list* (lambda () ,@body))) | |
58 | ||
59 | (defun print-json-mapping* (label thunk) | |
60 | (print-json-itemstart) | |
61 | (pprint-logical-block (*standard-output* nil) | |
62 | (let ((*print-json-comma* nil)) | |
63 | (print-json-simple label)) | |
64 | (princ ": ") | |
65 | (pprint-newline :miser) | |
66 | (let ((*print-json-comma* nil)) | |
67 | (funcall thunk)))) | |
68 | ||
69 | (defmacro print-json-mapping (label &body body) | |
70 | `(print-json-mapping* ,label (lambda () ,@body))) | |
71 | ||
72 | (defun print-json-simple (value) | |
73 | (typecase value | |
74 | (list (print-json-list (dolist (i value) (print-json-simple i)))) | |
75 | (hash-table (print-json-map (maphash (lambda (k v) | |
76 | (print-json-mapping k | |
77 | (print-json-simple v))) | |
78 | value))) | |
79 | (t | |
80 | (print-json-itemstart) | |
81 | (etypecase value | |
82 | (integer (format t "~A" value)) | |
83 | (float (format t "~G" value)) | |
84 | (rational (format t "~G" (float value 0.0d0))) | |
85 | (string (format t "~S" value)) | |
86 | ((eql t) (princ "true")) | |
87 | ((eql nil) (princ "false")) | |
88 | ((eql :undefined) (princ "undefined")) | |
89 | (symbol (format t "~S" (string-downcase value))))))) | |
90 | ||
91 | (defun print-json* (thunk) | |
92 | (let ((*print-json-comma* nil)) | |
93 | (pprint-logical-block (*standard-output* nil) | |
94 | (funcall thunk)) | |
95 | (terpri))) | |
96 | ||
97 | (defmacro print-json (&body body) | |
98 | `(print-json* (lambda () ,@body))) | |
99 | ||
100 | ;;;-------------------------------------------------------------------------- | |
101 | ;;; Host definitions. | |
102 | ||
103 | (defvar *hosts* (make-hash-table)) | |
104 | ||
105 | (export 'add-host) | |
106 | (defun addhost (name alist) | |
107 | (setf (gethash name *hosts*) alist)) | |
108 | ||
109 | (export 'defhost) | |
110 | (defmacro defhost (name &body alist) | |
111 | `(progn (addhost ',name ',alist) ',name)) | |
112 | ||
113 | (export 'host-plist) | |
114 | (defun host-plist (name) | |
115 | (multiple-value-bind (plist foundp) (gethash name *hosts*) | |
116 | (unless foundp (error "Host ~S not found" name)) | |
117 | plist)) | |
118 | ||
119 | (export 'hostprop) | |
120 | (defun hostprop (name prop &optional default) | |
121 | (multiple-value-bind (found-name value tail) | |
122 | (get-properties (host-plist name) (list prop)) | |
123 | (declare (ignore found-name)) | |
124 | (if tail | |
125 | (values value t) | |
126 | (values default nil)))) | |
127 | (defun (setf hostprop) (value name prop &optional default) | |
128 | (declare (ignore default)) | |
129 | (let ((plist (host-plist name))) | |
130 | (multiple-value-bind (found-name found-value tail) | |
131 | (get-properties plist (list prop)) | |
132 | (declare (ignore found-name found-value)) | |
133 | (if tail | |
134 | (setf (cadr tail) value) | |
135 | (setf (gethash name *hosts*) | |
136 | (cons prop (cons value plist)))) | |
137 | value))) | |
138 | ||
139 | (export 'hostprop-default) | |
140 | (defun hostprop-default (host prop value) | |
141 | (multiple-value-bind (found-value foundp) (hostprop host prop) | |
142 | (declare (ignore found-value)) | |
143 | (unless foundp (setf (hostprop host prop) value)))) | |
144 | ||
145 | (export 'hostpropp) | |
146 | (defun hostpropp (host prop) | |
147 | (multiple-value-bind (value foundp) (hostprop host prop) | |
148 | (declare (ignore value)) | |
149 | foundp)) | |
150 | ||
151 | (export 'maphosts) | |
152 | (defun maphosts (func) | |
153 | (maphash (lambda (name plist) | |
154 | (declare (ignore plist)) | |
155 | (funcall func name)) | |
156 | *hosts*)) | |
157 | ||
158 | (export 'dohosts) | |
159 | (defmacro dohosts ((hostvar &optional valueform) &body body) | |
160 | `(block nil (maphosts (lambda (,hostvar) ,@body)) ,valueform)) | |
161 | ||
162 | ;;;-------------------------------------------------------------------------- | |
163 | ;;; Group definitions. | |
164 | ||
165 | (defvar *groups* nil) | |
166 | ||
167 | (export 'add-group) | |
168 | (defun add-group (name type func) | |
169 | (let* ((found (assoc name *groups*)) | |
170 | (list (ecase type | |
171 | (:predicate | |
172 | (let ((list nil)) | |
173 | (dohosts (host list) | |
174 | (when (funcall func host) (push host list))))) | |
175 | (:list | |
176 | (funcall func))))) | |
177 | (if found | |
178 | (setf (cdr found) list) | |
179 | (push (cons name list) *groups*)))) | |
180 | ||
181 | (export 'defgroup) | |
182 | (defmacro defgroup (name type args &body body) | |
183 | `(progn (add-group ',name ,type | |
184 | ,(ecase type | |
185 | (:predicate | |
186 | (destructuring-bind (hostvar) args | |
187 | `(lambda (,hostvar) ,@body))) | |
188 | (:list | |
189 | (destructuring-bind () args | |
190 | `(lambda () ,@body))))) | |
191 | ',name)) | |
192 | ||
193 | ;;;-------------------------------------------------------------------------- | |
194 | ;;; Post-processing hooks. | |
195 | ||
196 | (defstruct hook-entry | |
197 | prio | |
198 | func) | |
199 | ||
200 | (export '(prio-props prio-groups)) | |
201 | (defconstant prio-props 10) | |
202 | (defconstant prio-groups 20) | |
203 | ||
204 | (defvar *hostproc-hooks* nil) | |
205 | ||
206 | (export 'addhook) | |
207 | (defun addhook (prio func) | |
208 | (push (make-hook-entry :prio prio :func func) *hostproc-hooks*)) | |
209 | ||
210 | (export 'defhook) | |
211 | (defmacro defhook ((prio) &body body) | |
212 | `(addhook ,prio (lambda () ,@body))) | |
213 | ||
214 | ;;;-------------------------------------------------------------------------- | |
215 | ;;; Read the input file and hook definitions. | |
216 | ||
217 | (defvar *progname* | |
218 | #.(or *compile-file-pathname* *load-pathname*)) | |
219 | ||
220 | (let ((pkg (make-package "ANSIBLE-INVENTORY-USER" | |
221 | :use '("CL" "ANSIBLE-INVENTORY"))) | |
222 | (args *arguments*)) | |
223 | (loop (let* ((arg (pop args)) | |
224 | (len (length arg))) | |
225 | (cond ((string= arg "--") (return)) | |
226 | ((string= arg "-") (push arg args) (return)) | |
227 | ((and (plusp (length arg)) | |
228 | (char= (char arg 0) #\-)) | |
229 | (do ((i 1 (1+ i))) | |
230 | ((>= i len)) | |
231 | (flet ((getarg () | |
232 | (cond ((< (1+ i) len) | |
233 | (prog1 (subseq arg (1+ i)) | |
234 | (setf i len))) | |
235 | (args | |
236 | (pop args)) | |
237 | (t | |
238 | (error "missing argument")))))) | |
239 | (case (char arg i) | |
240 | (#\h (format t "usage: ~A FILE ...~%" | |
241 | (pathname-name *progname*))) | |
242 | (t (error "unknown option `-~A'" (char arg i)))))) | |
243 | (t (push arg args) (return))))) | |
244 | (format t ";; remaining args = ~S~%" args) | |
245 | (dolist (arg args) | |
246 | (let ((*package* pkg)) | |
247 | (load arg :verbose nil)))) | |
248 | ||
249 | ;;;-------------------------------------------------------------------------- | |
250 | ;;; Run the hooks. | |
251 | ||
252 | (setf *hostproc-hooks* (sort *hostproc-hooks* #'< :key #'hook-entry-prio)) | |
253 | (mapc (compose #'hook-entry-func #'funcall) *hostproc-hooks*) | |
254 | ||
255 | ;;;-------------------------------------------------------------------------- | |
256 | ;;; Output the definitions. | |
257 | ||
258 | (setf *print-right-margin* 77) | |
259 | (print-json | |
260 | (print-json-map | |
261 | (print-json-mapping "all" | |
262 | (print-json-list (maphosts #'print-json-simple))) | |
263 | (dolist (assoc *groups*) | |
264 | (print-json-mapping (car assoc) | |
265 | (print-json-list | |
266 | (mapc #'print-json-simple (cdr assoc))))) | |
267 | (print-json-mapping "_meta" | |
268 | (print-json-map | |
269 | (print-json-mapping "hostvars" | |
270 | (print-json-map | |
271 | (maphash (lambda (host plist) | |
272 | (print-json-mapping host | |
273 | (print-json-map | |
274 | (do ((plist plist (cddr plist))) | |
275 | ((endp plist)) | |
276 | (print-json-mapping (car plist) | |
277 | (print-json-simple (cadr plist))))))) | |
278 | *hosts*))))))) | |
279 | ||
280 | ;;;----- That's all, folks -------------------------------------------------- |