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view src/doveadm/dsync/dsync-mailbox-tree-private.h @ 22715:20415dd0b85a

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dsync: Add per-mailbox sync lock that is always used. Both importing and exporting gets the lock before they even sync the mailbox. The lock is kept until the import/export finishes. This guarantees that no matter how dsync is run, two dsyncs can't be working on the same mailbox at the same time. This lock is in addition to the optional per-user lock enabled by the -l parameter. If the -l parameter is used, the same lock timeout is used for the per-mailbox lock. Otherwise 30s timeout is used. This should help to avoid email duplication when replication is enabled for public namespaces, and maybe in some other rare situations as well.
author Timo Sirainen <timo.sirainen@dovecot.fi>
date Thu, 28 Dec 2017 14:10:23 +0200
parents 0af20585964d
children
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#ifndef DSYNC_MAILBOX_TREE_PRIVATE_H
#define DSYNC_MAILBOX_TREE_PRIVATE_H

#include "dsync-mailbox-tree.h"

struct dsync_mailbox_tree {
	pool_t pool;
	char sep, sep_str[2], remote_sep, alt_char;
	/* root node isn't part of the real mailbox tree. its name is "" and
	   it has no siblings */
	struct dsync_mailbox_node root;

	unsigned int iter_count;

	ARRAY(struct dsync_mailbox_delete) deletes;

	/* guid_128_t => struct dsync_mailbox_node */
	HASH_TABLE(uint8_t *, struct dsync_mailbox_node *) name128_hash;
	HASH_TABLE(uint8_t *, struct dsync_mailbox_node *) name128_remotesep_hash;
	HASH_TABLE(uint8_t *, struct dsync_mailbox_node *) guid_hash;
};

void dsync_mailbox_tree_build_name128_hash(struct dsync_mailbox_tree *tree);

int dsync_mailbox_node_name_cmp(struct dsync_mailbox_node *const *n1,
				struct dsync_mailbox_node *const *n2);

void dsync_mailbox_tree_node_attach(struct dsync_mailbox_node *node,
				    struct dsync_mailbox_node *parent);
void dsync_mailbox_tree_node_detach(struct dsync_mailbox_node *node);

struct dsync_mailbox_tree *
dsync_mailbox_tree_dup(const struct dsync_mailbox_tree *src);
bool dsync_mailbox_trees_equal(struct dsync_mailbox_tree *tree1,
			       struct dsync_mailbox_tree *tree2);

#endif