user/dev discussion of public-inbox itself
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From: ebiederm@xmission.com (Eric W. Biederman)
To: Eric Wong <e@80x24.org>
Cc: meta@public-inbox.org
Subject: [PATCH 4/4] IMAPTracker:  Add a helper to track our place in reading imap mailboxes
Date: Wed, 09 Oct 2019 03:25:03 -0500
Message-ID: <874l0i9vhc.fsf_-_@x220.int.ebiederm.org> (raw)
In-Reply-To: <87wode9vxw.fsf_-_@x220.int.ebiederm.org>

Date: Fri, 27 Jul 2018 20:54:27 -0500

This removes the need to delete from an imap mailbox when downloading it's messages.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
---

This is simple and potentially very useful.

 lib/PublicInbox/IMAPTracker.pm | 73 ++++++++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 lib/PublicInbox/IMAPTracker.pm

diff --git a/lib/PublicInbox/IMAPTracker.pm b/lib/PublicInbox/IMAPTracker.pm
new file mode 100644
index 000000000000..65241eeebf51
--- /dev/null
+++ b/lib/PublicInbox/IMAPTracker.pm
@@ -0,0 +1,73 @@
+# Copyright (C) 2018 all contributors <meta@public-inbox.org>
+# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+
+package PublicInbox::IMAPTracker;
+use strict;
+use warnings;
+use DBI;
+use DBD::SQLite;
+use PublicInbox::Config;
+
+sub create_tables ($)
+{
+	my ($dbh) = @_;
+
+	$dbh->do(<<'');
+CREATE TABLE IF NOT EXISTS imap_last (
+	url VARCHAR PRIMARY KEY NOT NULL,
+	uid_validity INTEGER NOT NULL,
+	uid INTEGER NOT NULL,
+	UNIQUE (url)
+)
+
+}
+
+
+sub dbh_new ($)
+{
+	my ($dbname) = @_;
+	my $dbh = DBI->connect("dbi:SQLite:dbname=$dbname", '', '', {
+		AutoCommit => 1,
+		RaiseError => 1,
+		PrintError => 0,
+		ReadOnly => 0,
+		sqlite_use_immediate_transaction => 1,
+	});
+	$dbh->{sqlite_unicode} = 1;
+	$dbh->do('PRAGMA journal_mode = TRUNCATE');
+	$dbh->do('PRAGMA cache_size = 80000');
+	create_tables($dbh);
+	$dbh;
+}
+
+sub get_last($$)
+{
+	my ($self, $url) = @_;
+	my $dbh = $self->{dbh};
+
+	my $sth = $dbh->prepare_cached(<<'', undef, 1);
+SELECT uid_validity, uid FROM imap_last WHERE url = ?
+
+	$sth->execute($url);
+	$sth->fetchrow_array;
+}
+
+sub update_last($$$$)
+{
+	my ($self, $url, $validity, $last) = @_;
+	my $dbh = $self->{dbh};
+	my $sth = $dbh->prepare_cached(<<'');
+INSERT OR REPLACE INTO imap_last (url, uid_validity, uid)
+VALUES (?, ?, ?)
+
+	$sth->execute($url, $validity, $last);
+}
+
+sub new {
+	my ($class) = @_;
+	my $dbname = PublicInbox::Config->config_dir() . "/imap.sqlite3";
+	my $dbh = dbh_new($dbname);
+	bless { dbname => $dbname, dbh => $dbh }, $class;
+}
+
+1;
-- 
2.23.0


  parent reply index

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-07 22:13 Do I need multiple publicinbox.<name>.address values? Alyssa Ross
2019-10-08  0:10 ` Eric Wong
2019-10-08 12:18   ` ebiederm
2019-10-08 12:23     ` [PATCH] Config.pm: Add support for mailing list information ebiederm
2019-10-08 22:11     ` Do I need multiple publicinbox.<name>.address values? Eric Wong
2019-10-08 22:24       ` ebiederm
2019-10-08 22:41         ` Eric Wong
2019-10-09  7:58           ` ebiederm
2019-10-09  8:15             ` [PATCH 0/4] Various bits to support import_imap_mailbox ebiederm
2019-10-09  8:16               ` [PATCH 1/4] PublicInbox::Import Smuggle a raw message into add ebiederm
2019-10-09  8:17               ` [PATCH 2/4] PublicInbox::Config: Process mailboxes in sorted order ebiederm
2019-10-10  9:43                 ` Eric Wong
2019-10-10 11:05                   ` ebiederm
2019-10-09  8:23               ` [PATCH 3/4] Config.pm: Add support for looking up repos by their directories ebiederm
2019-10-09  8:25               ` ebiederm [this message]
2019-10-10 19:08               ` ibx->{listid} autoviv fixup [was: [PATCH 0/4] Various bits to support import_imap_mailbox] Eric Wong
2019-10-10 21:23                 ` ebiederm
2019-10-10  8:31             ` Do I need multiple publicinbox.<name>.address values? Eric Wong
2019-10-10 10:56               ` ebiederm
2019-10-09 11:59   ` Alyssa Ross
2019-10-10 10:06     ` Eric Wong

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user/dev discussion of public-inbox itself

Archives are clonable:
	git clone --mirror http://public-inbox.org/meta
	git clone --mirror http://czquwvybam4bgbro.onion/meta
	git clone --mirror http://hjrcffqmbrq6wope.onion/meta
	git clone --mirror http://ou63pmih66umazou.onion/meta

Example config snippet for mirrors

Newsgroups are available over NNTP:
	nntp://news.public-inbox.org/inbox.comp.mail.public-inbox.meta
	nntp://ou63pmih66umazou.onion/inbox.comp.mail.public-inbox.meta
	nntp://czquwvybam4bgbro.onion/inbox.comp.mail.public-inbox.meta
	nntp://hjrcffqmbrq6wope.onion/inbox.comp.mail.public-inbox.meta
	nntp://news.gmane.org/gmane.mail.public-inbox.general

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AGPL code for this site: git clone https://public-inbox.org/ public-inbox