1 Return-Path: <dme@dme.org>
\r
2 X-Original-To: notmuch@notmuchmail.org
\r
3 Delivered-To: notmuch@notmuchmail.org
\r
4 Received: from localhost (localhost [127.0.0.1])
\r
5 by olra.theworths.org (Postfix) with ESMTP id 190B8431FB6
\r
6 for <notmuch@notmuchmail.org>; Tue, 7 Oct 2014 00:57:19 -0700 (PDT)
\r
7 X-Virus-Scanned: Debian amavisd-new at olra.theworths.org
\r
11 X-Spam-Status: No, score=-0.7 tagged_above=-999 required=5
\r
12 tests=[RCVD_IN_DNSWL_LOW=-0.7] autolearn=disabled
\r
13 Received: from olra.theworths.org ([127.0.0.1])
\r
14 by localhost (olra.theworths.org [127.0.0.1]) (amavisd-new, port 10024)
\r
15 with ESMTP id nhCCKu3eRI+9 for <notmuch@notmuchmail.org>;
\r
16 Tue, 7 Oct 2014 00:57:14 -0700 (PDT)
\r
17 Received: from mail-wg0-f49.google.com (mail-wg0-f49.google.com
\r
18 [74.125.82.49]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client
\r
19 certificate requested) by olra.theworths.org (Postfix) with ESMTPS id
\r
20 2B21E431FAE for <notmuch@notmuchmail.org>; Tue, 7 Oct 2014 00:57:14 -0700
\r
22 Received: by mail-wg0-f49.google.com with SMTP id x12so8538054wgg.20
\r
23 for <notmuch@notmuchmail.org>; Tue, 07 Oct 2014 00:57:13 -0700 (PDT)
\r
24 X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
\r
25 d=1e100.net; s=20130820;
\r
26 h=x-gm-message-state:to:subject:in-reply-to:references:user-agent
\r
27 :from:date:message-id:mime-version:content-type;
\r
28 bh=F8Q2p2uCHjkXkNFu+8eMwVRPI9n0G/ButLRhBMNo6/w=;
\r
29 b=Kwyd0QoSPFiOM4r7raPBMimZl0dKeVnYayvGtTKhc7LYGH0eNp1VRThsGz5GOPdJEI
\r
30 TzkNCge6SqAXV44x9b45hhjWR7/VoSPDLr6StiG4ZBi4A0HQJucS0ECry0PAh7UOAXsj
\r
31 GG3ng19M4GPwec9rgQvSXTyutF0Biff7dBGk6qnfkD7XqGF7g5mUJxpoq/+F16v9h/c1
\r
32 POdF3o96SwKVQwgx2KAZUq1ccEAxFoS6OsqqIfZ/XWj9fOgDGA6ULB15UahjPWWrhf9J
\r
33 lDizaDidVNcBZBDRiduj3JGplWh0KaRT71UXOawaO6ENE5SeswsfnxjVMpdX9wSJZczv
\r
36 ALoCoQnAWptzOvjC3ngQ9uwy2UFb1mVFqxL/A3eGRPh7Zlr2//Ws90WQikRSNPJ+QAOcJnCvcov6
\r
37 X-Received: by 10.194.119.9 with SMTP id kq9mr2617393wjb.25.1412668632947;
\r
38 Tue, 07 Oct 2014 00:57:12 -0700 (PDT)
\r
39 Received: from localhost ([2a01:348:1a2:1:bc6b:bac4:2954:d414])
\r
40 by mx.google.com with ESMTPSA id
\r
41 fs13sm13703833wic.19.2014.10.07.00.57.11 for <multiple recipients>
\r
42 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
\r
43 Tue, 07 Oct 2014 00:57:12 -0700 (PDT)
\r
44 To: notmuch@notmuchmail.org
\r
45 Subject: Re: RFC: notmuch-cache.el: simple caching of MIME parts
\r
46 In-Reply-To: <m2wq8cmi2c.fsf@fenchurch.hh.sledj.net>
\r
47 References: <m2wq8cmi2c.fsf@fenchurch.hh.sledj.net>
\r
48 User-Agent: Notmuch/0.18.1 (http://notmuchmail.org) Emacs/24.3.1
\r
49 (x86_64-apple-darwin13.3.0)
\r
50 From: David Edmondson <dme@dme.org>
\r
51 Date: Tue, 07 Oct 2014 08:57:09 +0100
\r
52 Message-ID: <m2tx3gmhwq.fsf@fenchurch.hh.sledj.net>
\r
54 Content-Type: multipart/mixed; boundary="=-=-="
\r
55 X-BeenThere: notmuch@notmuchmail.org
\r
56 X-Mailman-Version: 2.1.13
\r
58 List-Id: "Use and development of the notmuch mail system."
\r
59 <notmuch.notmuchmail.org>
\r
60 List-Unsubscribe: <http://notmuchmail.org/mailman/options/notmuch>,
\r
61 <mailto:notmuch-request@notmuchmail.org?subject=unsubscribe>
\r
62 List-Archive: <http://notmuchmail.org/pipermail/notmuch>
\r
63 List-Post: <mailto:notmuch@notmuchmail.org>
\r
64 List-Help: <mailto:notmuch-request@notmuchmail.org?subject=help>
\r
65 List-Subscribe: <http://notmuchmail.org/mailman/listinfo/notmuch>,
\r
66 <mailto:notmuch-request@notmuchmail.org?subject=subscribe>
\r
67 X-List-Received-Date: Tue, 07 Oct 2014 07:57:19 -0000
\r
70 Content-Type: text/plain
\r
72 On Tue, Oct 07 2014, David Edmondson wrote:
\r
73 > I've been using remote-notmuch over a 3G connection quite a lot
\r
74 > recently. Dragging down the same MIME part more than once is annoying,
\r
75 > so here is a very simple filesystem based cache of MIME parts for
\r
76 > notmuch. It's integrated using defadvice for now, but a cleaner approach
\r
77 > is obviously possible.
\r
79 > No suggestion that this should be integrated - it's just a toy to prompt
\r
82 Bah. Attached the auto-save file :-p
\r
86 Content-Type: application/emacs-lisp
\r
87 Content-Disposition: attachment; filename=notmuch-cache.el
\r
88 Content-Transfer-Encoding: quoted-printable
\r
90 ;; notmuch-cache.el --- a simple local filesystem cache of MIME parts
\r
92 ;; Copyright =C2=A9 David Edmondson
\r
94 ;; This file is not part of Notmuch.
\r
96 ;; Notmuch is free software: you can redistribute it and/or modify it
\r
97 ;; under the terms of the GNU General Public License as published by
\r
98 ;; the Free Software Foundation, either version 3 of the License, or
\r
99 ;; (at your option) any later version.
\r
101 ;; Notmuch is distributed in the hope that it will be useful, but
\r
102 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
\r
103 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
\r
104 ;; General Public License for more details.
\r
106 ;; You should have received a copy of the GNU General Public License
\r
107 ;; along with Notmuch. If not, see <http://www.gnu.org/licenses/>.
\r
109 ;; Authors: David Edmondson <dme@dme.org>
\r
111 ;; Things to consider:
\r
113 ;; - Keep an in-memory cache of parts? What would be an appropriate
\r
114 ;; way to limit the size of that cache?
\r
116 ;; - In a long thread with mostly non-matching messages (i.e. new
\r
117 ;; message in old thread), the default show output includes the text
\r
118 ;; of all of the non-matching parts. Given that we can now insert
\r
119 ;; previously unshown parts on the fly, maybe non-matching body
\r
120 ;; parts should not be included in the default output, and code
\r
121 ;; added to glue them in when a non-matching message is
\r
122 ;; opened. (Would this be simpler if we convert simple text/plain
\r
123 ;; messages to look like MIME messages with a single text/plain
\r
126 ;; - There is no cache management functionality. Just delete the
\r
127 ;; directory and its' contents for now.
\r
131 (defvar notmuch-cache-stats [0 0 0]
\r
132 "Statistics about the notmuch part cache.
\r
134 This is an array with three elements:
\r
135 - the number of requests to the cache,
\r
136 - the number of reads satisified from the cache,
\r
137 - the number of writes to the cache.")
\r
139 (defun notmuch-cache-stat-incr (nth)
\r
140 (aset notmuch-cache-stats nth (+ 1 (aref notmuch-cache-stats nth))))
\r
144 (defcustom notmuch-cache-directory "~/.notmuch-cache/parts"
\r
145 "A directory used to store cached message parts."
\r
148 (defun notmuch-cache-filename (id part)
\r
149 (expand-file-name (format "%s/%s/%d" notmuch-cache-directory id part)))
\r
151 (defun notmuch-cache-get (id part)
\r
152 "Return a cached copy of ID's MIME PART, or nil."
\r
154 (notmuch-cache-stat-incr 0) ;; Request.
\r
156 (let ((filename (notmuch-cache-filename id part)))
\r
157 (if (not (file-exists-p filename))
\r
159 (notmuch-cache-stat-incr 1) ;; Read.
\r
160 (let ((coding-system-for-read 'no-conversion))
\r
162 (insert-file-contents (notmuch-cache-filename id part))
\r
163 (buffer-substring (point-min) (point-max)))))))
\r
165 (defun notmuch-cache-put (id part content)
\r
166 "Cache a copy of ID's MIME PART using CONTENT."
\r
168 (let ((filename (notmuch-cache-filename id part)))
\r
169 (unless (file-exists-p filename)
\r
170 (notmuch-cache-stat-incr 2) ;; Write.
\r
171 (make-directory (file-name-directory filename) t)
\r
172 (let ((coding-system-for-write 'no-conversion))
\r
175 (write-region (point-min) (point-max) (notmuch-cache-filename id part)))=
\r
180 (defadvice notmuch-get-bodypart-internal (around notmuch-bodypart-cache act=
\r
182 "Use a local cache of notmuch body parts."
\r
184 (let ((content (notmuch-cache-get query part-number)))
\r
186 (setq ad-return-value content)
\r
188 (when ad-return-value
\r
189 (notmuch-cache-put query part-number ad-return-value)))))
\r