Mercurial > dovecot > core-2.2
view src/login-common/login-proxy-state.h @ 22715:20415dd0b85a
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 | 2eeef1619161 |
children |
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#ifndef LOGIN_PROXY_STATE_H #define LOGIN_PROXY_STATE_H #include <sys/time.h> struct login_proxy_record { struct ip_addr ip; in_port_t port; /* These are used to spread client-visible disconnects over longer periods of time to avoid reconnect spikes when a server dies. If num_disconnects_since_ts=0 when server disconnects us, it's increased and disconnect_timestamp is updated. Afterwards it's increased for each new disconnection. num_disconnects_since_ts gets reset back to zero whenever a) last_success gets updated or b) num_delayed_client_disconnects drops to 0. */ struct timeval disconnect_timestamp; unsigned int num_disconnects_since_ts; unsigned int num_delayed_client_disconnects; /* these are tracking connect()s, not necessarily logins: */ unsigned int num_waiting_connections; /* number of connections we're proxying now (post-login) */ unsigned int num_proxying_connections; struct timeval last_failure; struct timeval last_success; }; struct login_proxy_state *login_proxy_state_init(const char *notify_path); void login_proxy_state_deinit(struct login_proxy_state **state); struct login_proxy_record * login_proxy_state_get(struct login_proxy_state *state, const struct ip_addr *ip, in_port_t port); void login_proxy_state_notify(struct login_proxy_state *state, const char *user); #endif