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/* Copyright (c) 2016-2018 Dovecot authors, see the included COPYING file */
#include "common.h"
#include "array.h"
#include "str.h"
#include "strescape.h"
#include "ostream.h"
#include "connection.h"
#include "service.h"
#include "service-process.h"
#include "service-monitor.h"
#include "master-client.h"
struct master_client {
struct connection conn;
};
static void
master_client_service_status_output(string_t *str,
const struct service *service)
{
str_append_tabescaped(str, service->set->name);
str_printfa(str, "\t%u\t%u\t%u\t%u\t%u\t%ld\t%u\t%ld\t%c\t%c\t%c\t%"PRIu64"\n",
service->process_count, service->process_avail,
service->process_limit, service->client_limit,
(service->to_throttle == NULL ?
0 : ((service->throttle_msecs + 999) / 1000)),
(long)service->exit_failure_last,
service->exit_failures_in_sec,
(long)service->last_drop_warning,
service->listen_pending ? 'y' : 'n',
service->listening ? 'y' : 'n',
service->doveadm_stop ? 'y' : 'n',
service->process_count_total);
}
static int
master_client_service_status(struct master_client *client)
{
struct service *service;
string_t *str = t_str_new(128);
array_foreach_elem(&services->services, service) {
str_truncate(str, 0);
master_client_service_status_output(str, service);
o_stream_nsend(client->conn.output, str_data(str), str_len(str));
}
o_stream_nsend_str(client->conn.output, "\n");
return 1;
}
static void
master_client_process_output(string_t *str,
const struct service_process *process)
{
str_append_tabescaped(str, process->service->set->name);
str_printfa(str, "\t%ld\t%u\t%u\t%ld\t%ld\t%ld\n",
(long)process->pid, process->available_count,
process->total_count, (long)process->idle_start,
(long)process->last_status_update,
(long)process->last_kill_sent);
}
static void
master_client_process_status_list(struct master_client *client,
struct service_process *processes,
string_t *str)
{
struct service_process *p;
for (p = processes; p != NULL; p = p->next) {
str_truncate(str, 0);
master_client_process_output(str, p);
o_stream_nsend(client->conn.output,
str_data(str), str_len(str));
}
}
static int
master_client_process_status(struct master_client *client,
const char *const *args)
{
struct service *service;
string_t *str = t_str_new(128);
array_foreach_elem(&services->services, service) {
if (args[0] != NULL && !str_array_find(args, service->set->name))
continue;
master_client_process_status_list(client,
service->busy_processes, str);
master_client_process_status_list(client,
service->idle_processes_head, str);
}
o_stream_nsend_str(client->conn.output, "\n");
return 1;
}
static int
master_client_stop(struct master_client *client, const char *const *args)
{
struct service *service;
const char *reply = "+\n";
for (unsigned int i = 0; args[i] != NULL; i++) {
service = service_lookup(services, args[i]);
if (service == NULL)
reply = t_strdup_printf("-Unknown service: %s\n", args[i]);
else {
service_monitor_stop_close(service);
service->doveadm_stop = TRUE;
}
}
o_stream_nsend_str(client->conn.output, reply);
return 1;
}
static int
master_client_input_args(struct connection *conn, const char *const *args)
{
struct master_client *client = (struct master_client *)conn;
const char *cmd = args[0];
if (cmd == NULL) {
i_error("%s: Empty command", conn->name);
return 0;
}
args++;
if (strcmp(cmd, "SERVICE-STATUS") == 0)
return master_client_service_status(client);
if (strcmp(cmd, "PROCESS-STATUS") == 0)
return master_client_process_status(client, args);
if (strcmp(cmd, "STOP") == 0)
return master_client_stop(client, args);
i_error("%s: Unknown command: %s", conn->name, cmd);
return -1;
}
static void master_client_destroy(struct connection *conn)
{
struct master_client *client = (struct master_client *)conn;
connection_deinit(conn);
i_free(client);
}
static const struct connection_settings master_conn_set = {
.service_name_in = "master-client",
.service_name_out = "master-server",
.major_version = 1,
.minor_version = 0,
.input_max_size = 1024,
.output_max_size = 1024,
.client = FALSE
};
static const struct connection_vfuncs master_conn_vfuncs = {
.destroy = master_client_destroy,
.input_args = master_client_input_args
};
static struct connection_list *master_connections;
void master_client_connected(struct service_list *service_list)
{
struct master_client *client;
int fd;
fd = net_accept(service_list->master_fd, NULL, NULL);
if (fd < 0) {
if (fd == -2)
i_error("net_accept() failed: %m");
return;
}
fd_close_on_exec(fd, TRUE);
client = i_new(struct master_client, 1);
connection_init_server(master_connections, &client->conn,
"master-client", fd, fd);
}
void master_clients_init(void)
{
master_connections = connection_list_init(&master_conn_set,
&master_conn_vfuncs);
}
void master_clients_deinit(void)
{
connection_list_deinit(&master_connections);
}
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