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main.c
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/*
* Copyright (C) 2022 Red Hat
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list
* of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its contributors may
* be used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* pgmoneta */
#include <pgmoneta.h>
#include <archive.h>
#include <backup.h>
#include <configuration.h>
#include <delete.h>
#include <gzip_compression.h>
#include <info.h>
#include <keep.h>
#include <logging.h>
#include <lz4_compression.h>
#include <management.h>
#include <memory.h>
#include <network.h>
#include <prometheus.h>
#include <remote.h>
#include <restore.h>
#include <retention.h>
#include <security.h>
#include <server.h>
#include <shmem.h>
#include <utils.h>
#include <wal.h>
#include <zstandard_compression.h>
/* system */
#include <errno.h>
#include <ev.h>
#include <fcntl.h>
#include <getopt.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <sys/resource.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <openssl/crypto.h>
#ifdef HAVE_LINUX
#include <systemd/sd-daemon.h>
#endif
#define MAX_FDS 64
static void accept_mgt_cb(struct ev_loop* loop, struct ev_io* watcher, int revents);
static void accept_metrics_cb(struct ev_loop* loop, struct ev_io* watcher, int revents);
static void accept_management_cb(struct ev_loop* loop, struct ev_io* watcher, int revents);
static void shutdown_cb(struct ev_loop* loop, ev_signal* w, int revents);
static void reload_cb(struct ev_loop* loop, ev_signal* w, int revents);
static void coredump_cb(struct ev_loop* loop, ev_signal* w, int revents);
static void wal_compress_cb(struct ev_loop* loop, ev_periodic* w, int revents);
static void retention_cb(struct ev_loop* loop, ev_periodic* w, int revents);
static void valid_cb(struct ev_loop* loop, ev_periodic* w, int revents);
static void wal_streaming_cb(struct ev_loop* loop, ev_periodic* w, int revents);
static bool accept_fatal(int error);
static void reload_configuration(void);
static void init_receivewals(void);
static int create_pidfile(void);
static void remove_pidfile(void);
static void shutdown_ports(void);
struct accept_io
{
struct ev_io io;
int socket;
char** argv;
};
static volatile int keep_running = 1;
static volatile int stop = 0;
static char** argv_ptr;
static struct ev_loop* main_loop = NULL;
static struct accept_io io_mgt;
static int unix_management_socket = -1;
static struct accept_io io_metrics[MAX_FDS];
static int* metrics_fds = NULL;
static int metrics_fds_length = -1;
static struct accept_io io_management[MAX_FDS];
static int* management_fds = NULL;
static int management_fds_length = -1;
static void
start_mgt(void)
{
memset(&io_mgt, 0, sizeof(struct accept_io));
ev_io_init((struct ev_io*)&io_mgt, accept_mgt_cb, unix_management_socket, EV_READ);
io_mgt.socket = unix_management_socket;
io_mgt.argv = argv_ptr;
ev_io_start(main_loop, (struct ev_io*)&io_mgt);
}
static void
shutdown_mgt(void)
{
struct configuration* config;
config = (struct configuration*)shmem;
ev_io_stop(main_loop, (struct ev_io*)&io_mgt);
pgmoneta_disconnect(unix_management_socket);
errno = 0;
pgmoneta_remove_unix_socket(config->unix_socket_dir, MAIN_UDS);
errno = 0;
}
static void
start_metrics(void)
{
for (int i = 0; i < metrics_fds_length; i++)
{
int sockfd = *(metrics_fds + i);
memset(&io_metrics[i], 0, sizeof(struct accept_io));
ev_io_init((struct ev_io*)&io_metrics[i], accept_metrics_cb, sockfd, EV_READ);
io_metrics[i].socket = sockfd;
io_metrics[i].argv = argv_ptr;
ev_io_start(main_loop, (struct ev_io*)&io_metrics[i]);
}
}
static void
shutdown_metrics(void)
{
for (int i = 0; i < metrics_fds_length; i++)
{
ev_io_stop(main_loop, (struct ev_io*)&io_metrics[i]);
pgmoneta_disconnect(io_metrics[i].socket);
errno = 0;
}
}
static void
start_management(void)
{
for (int i = 0; i < management_fds_length; i++)
{
int sockfd = *(management_fds + i);
memset(&io_management[i], 0, sizeof(struct accept_io));
ev_io_init((struct ev_io*)&io_management[i], accept_management_cb, sockfd, EV_READ);
io_management[i].socket = sockfd;
io_management[i].argv = argv_ptr;
ev_io_start(main_loop, (struct ev_io*)&io_management[i]);
}
}
static void
shutdown_management(void)
{
for (int i = 0; i < management_fds_length; i++)
{
ev_io_stop(main_loop, (struct ev_io*)&io_management[i]);
pgmoneta_disconnect(io_management[i].socket);
errno = 0;
}
}
static void
version(void)
{
printf("pgmoneta %s\n", VERSION);
exit(1);
}
static void
usage(void)
{
printf("pgmoneta %s\n", VERSION);
printf(" Backup / restore solution for PostgreSQL\n");
printf("\n");
printf("Usage:\n");
printf(" pgmoneta [ -c CONFIG_FILE ] [ -u USERS_FILE ] [ -d ]\n");
printf("\n");
printf("Options:\n");
printf(" -c, --config CONFIG_FILE Set the path to the pgmoneta.conf file\n");
printf(" -u, --users USERS_FILE Set the path to the pgmoneta_users.conf file\n");
printf(" -A, --admins ADMINS_FILE Set the path to the pgmoneta_admins.conf file\n");
printf(" -d, --daemon Run as a daemon\n");
printf(" -V, --version Display version information\n");
printf(" -?, --help Display help\n");
printf("\n");
printf("pgmoneta: %s\n", PGMONETA_HOMEPAGE);
printf("Report bugs: %s\n", PGMONETA_ISSUES);
}
int
main(int argc, char** argv)
{
char* configuration_path = NULL;
char* users_path = NULL;
char* admins_path = NULL;
bool daemon = false;
pid_t pid, sid;
struct signal_info signal_watcher[5];
struct ev_periodic wal_compress;
struct ev_periodic retention;
struct ev_periodic valid;
struct ev_periodic wal_streaming;
size_t shmem_size;
struct configuration* config = NULL;
int ret;
int c;
argv_ptr = argv;
while (1)
{
static struct option long_options[] =
{
{"config", required_argument, 0, 'c'},
{"users", required_argument, 0, 'u'},
{"admins", required_argument, 0, 'A'},
{"daemon", no_argument, 0, 'd'},
{"version", no_argument, 0, 'V'},
{"help", no_argument, 0, '?'}
};
int option_index = 0;
c = getopt_long (argc, argv, "dV?c:u:A:",
long_options, &option_index);
if (c == -1)
break;
switch (c)
{
case 'c':
configuration_path = optarg;
break;
case 'u':
users_path = optarg;
break;
case 'A':
admins_path = optarg;
break;
case 'd':
daemon = true;
break;
case 'V':
version();
break;
case '?':
usage();
exit(1);
break;
default:
break;
}
}
if (getuid() == 0)
{
printf("pgmoneta: Using the root account is not allowed\n");
#ifdef HAVE_LINUX
sd_notify(0, "STATUS=Using the root account is not allowed");
#endif
exit(1);
}
shmem_size = sizeof(struct configuration);
if (pgmoneta_create_shared_memory(shmem_size, HUGEPAGE_OFF, &shmem))
{
printf("pgmoneta: Error in creating shared memory\n");
#ifdef HAVE_LINUX
sd_notifyf(0, "STATUS=Error in creating shared memory");
#endif
exit(1);
}
pgmoneta_init_configuration(shmem);
config = (struct configuration*)shmem;
if (configuration_path != NULL)
{
if (pgmoneta_read_configuration(shmem, configuration_path))
{
printf("pgmoneta: Configuration not found: %s\n", configuration_path);
#ifdef HAVE_LINUX
sd_notifyf(0, "STATUS=Configuration not found: %s", configuration_path);
#endif
exit(1);
}
}
else
{
if (pgmoneta_read_configuration(shmem, "/etc/pgmoneta/pgmoneta.conf"))
{
printf("pgmoneta: Configuration not found: /etc/pgmoneta/pgmoneta.conf\n");
#ifdef HAVE_LINUX
sd_notify(0, "STATUS=Configuration not found: /etc/pgmoneta/pgmoneta.conf");
#endif
exit(1);
}
configuration_path = "/etc/pgmoneta/pgmoneta.conf";
}
memcpy(&config->configuration_path[0], configuration_path, MIN(strlen(configuration_path), MAX_PATH - 1));
if (users_path != NULL)
{
ret = pgmoneta_read_users_configuration(shmem, users_path);
if (ret == 1)
{
printf("pgmoneta: USERS configuration not found: %s\n", users_path);
#ifdef HAVE_LINUX
sd_notifyf(0, "STATUS=USERS configuration not found: %s", users_path);
#endif
exit(1);
}
else if (ret == 2)
{
printf("pgmoneta: Invalid master key file\n");
#ifdef HAVE_LINUX
sd_notify(0, "STATUS=Invalid master key file");
#endif
exit(1);
}
else if (ret == 3)
{
printf("pgmoneta: USERS: Too many users defined %d (max %d)\n", config->number_of_users, NUMBER_OF_USERS);
#ifdef HAVE_LINUX
sd_notifyf(0, "STATUS=USERS: Too many users defined %d (max %d)", config->number_of_users, NUMBER_OF_USERS);
#endif
exit(1);
}
memcpy(&config->users_path[0], users_path, MIN(strlen(users_path), MAX_PATH - 1));
}
else
{
users_path = "/etc/pgmoneta/pgmoneta_users.conf";
ret = pgmoneta_read_users_configuration(shmem, users_path);
if (ret == 0)
{
memcpy(&config->users_path[0], users_path, MIN(strlen(users_path), MAX_PATH - 1));
}
}
if (admins_path != NULL)
{
ret = pgmoneta_read_admins_configuration(shmem, admins_path);
if (ret == 1)
{
printf("pgmoneta: ADMINS configuration not found: %s\n", admins_path);
#ifdef HAVE_LINUX
sd_notifyf(0, "STATUS=ADMINS configuration not found: %s", admins_path);
#endif
exit(1);
}
else if (ret == 2)
{
printf("pgmoneta: Invalid master key file\n");
#ifdef HAVE_LINUX
sd_notify(0, "STATUS=Invalid master key file");
#endif
exit(1);
}
else if (ret == 3)
{
printf("pgmoneta: ADMINS: Too many admins defined %d (max %d)\n", config->number_of_admins, NUMBER_OF_ADMINS);
#ifdef HAVE_LINUX
sd_notifyf(0, "STATUS=ADMINS: Too many admins defined %d (max %d)", config->number_of_admins, NUMBER_OF_ADMINS);
#endif
exit(1);
}
memcpy(&config->admins_path[0], admins_path, MIN(strlen(admins_path), MAX_PATH - 1));
}
else
{
admins_path = "/etc/pgmoneta/pgmoneta_admins.conf";
ret = pgmoneta_read_admins_configuration(shmem, admins_path);
if (ret == 0)
{
memcpy(&config->admins_path[0], admins_path, MIN(strlen(admins_path), MAX_PATH - 1));
}
}
if (pgmoneta_init_logging())
{
#ifdef HAVE_LINUX
sd_notify(0, "STATUS=Failed to init logging");
#endif
exit(1);
}
if (pgmoneta_start_logging())
{
#ifdef HAVE_LINUX
sd_notify(0, "STATUS=Failed to start logging");
#endif
exit(1);
}
if (pgmoneta_validate_configuration(shmem))
{
#ifdef HAVE_LINUX
sd_notify(0, "STATUS=Invalid configuration");
#endif
exit(1);
}
if (pgmoneta_validate_users_configuration(shmem))
{
#ifdef HAVE_LINUX
sd_notify(0, "STATUS=Invalid USERS configuration");
#endif
exit(1);
}
if (pgmoneta_validate_admins_configuration(shmem))
{
#ifdef HAVE_LINUX
sd_notify(0, "STATUS=Invalid ADMINS configuration");
#endif
exit(1);
}
config = (struct configuration*)shmem;
if (daemon)
{
if (config->log_type == PGMONETA_LOGGING_TYPE_CONSOLE)
{
printf("pgmoneta: Daemon mode can't be used with console logging\n");
#ifdef HAVE_LINUX
sd_notify(0, "STATUS=Daemon mode can't be used with console logging");
#endif
exit(1);
}
pid = fork();
if (pid < 0)
{
printf("pgmoneta: Daemon mode failed\n");
#ifdef HAVE_LINUX
sd_notify(0, "STATUS=Daemon mode failed");
#endif
exit(1);
}
if (pid > 0)
{
exit(0);
}
/* We are a daemon now */
umask(0);
sid = setsid();
if (sid < 0)
{
exit(1);
}
}
if (create_pidfile())
{
exit(1);
}
pgmoneta_set_proc_title(argc, argv, "main", NULL);
/* Bind Unix Domain Socket */
if (pgmoneta_bind_unix_socket(config->unix_socket_dir, MAIN_UDS, &unix_management_socket))
{
pgmoneta_log_fatal("pgmoneta: Could not bind to %s/%s", config->unix_socket_dir, MAIN_UDS);
#ifdef HAVE_LINUX
sd_notifyf(0, "STATUS=Could not bind to %s/%s", config->unix_socket_dir, MAIN_UDS);
#endif
exit(1);
}
/* libev */
main_loop = ev_default_loop(pgmoneta_libev(config->libev));
if (!main_loop)
{
pgmoneta_log_fatal("pgmoneta: No loop implementation (%x) (%x)",
pgmoneta_libev(config->libev), ev_supported_backends());
#ifdef HAVE_LINUX
sd_notifyf(0, "STATUS=No loop implementation (%x) (%x)", pgmoneta_libev(config->libev), ev_supported_backends());
#endif
exit(1);
}
ev_signal_init((struct ev_signal*)&signal_watcher[0], shutdown_cb, SIGTERM);
ev_signal_init((struct ev_signal*)&signal_watcher[1], reload_cb, SIGHUP);
ev_signal_init((struct ev_signal*)&signal_watcher[2], shutdown_cb, SIGINT);
ev_signal_init((struct ev_signal*)&signal_watcher[3], coredump_cb, SIGABRT);
ev_signal_init((struct ev_signal*)&signal_watcher[4], shutdown_cb, SIGALRM);
for (int i = 0; i < 5; i++)
{
signal_watcher[i].slot = -1;
ev_signal_start(main_loop, (struct ev_signal*)&signal_watcher[i]);
}
if (pgmoneta_tls_valid())
{
pgmoneta_log_fatal("pgmoneta: Invalid TLS configuration");
#ifdef HAVE_LINUX
sd_notify(0, "STATUS=Invalid TLS configuration");
#endif
exit(1);
}
start_mgt();
if (config->metrics > 0)
{
/* Bind metrics socket */
if (pgmoneta_bind(config->host, config->metrics, &metrics_fds, &metrics_fds_length))
{
pgmoneta_log_fatal("pgmoneta: Could not bind to %s:%d", config->host, config->metrics);
#ifdef HAVE_LINUX
sd_notifyf(0, "STATUS=Could not bind to %s:%d", config->host, config->metrics);
#endif
exit(1);
}
if (metrics_fds_length > MAX_FDS)
{
pgmoneta_log_fatal("pgmoneta: Too many descriptors %d", metrics_fds_length);
#ifdef HAVE_LINUX
sd_notifyf(0, "STATUS=Too many descriptors %d", metrics_fds_length);
#endif
exit(1);
}
start_metrics();
}
if (config->management > 0)
{
/* Bind management socket */
if (pgmoneta_bind(config->host, config->management, &management_fds, &management_fds_length))
{
pgmoneta_log_fatal("pgmoneta: Could not bind to %s:%d", config->host, config->management);
#ifdef HAVE_LINUX
sd_notifyf(0, "STATUS=Could not bind to %s:%d", config->host, config->management);
#endif
exit(1);
}
if (management_fds_length > MAX_FDS)
{
pgmoneta_log_fatal("pgmoneta: Too many descriptors %d", management_fds_length);
#ifdef HAVE_LINUX
sd_notifyf(0, "STATUS=Too many descriptors %d", management_fds_length);
#endif
exit(1);
}
start_management();
}
/* Start all pg_receivewal processes */
init_receivewals();
/* Start WAL compression */
if (config->compression_type != COMPRESSION_NONE)
{
ev_periodic_init (&wal_compress, wal_compress_cb, 0., 60, 0);
ev_periodic_start (main_loop, &wal_compress);
}
ev_periodic_init (&retention, retention_cb, 0., 300, 0);
ev_periodic_start (main_loop, &retention);
ev_periodic_init (&valid, valid_cb, 0., 600, 0);
ev_periodic_start (main_loop, &valid);
ev_periodic_init (&wal_streaming, wal_streaming_cb, 0., 60, 0);
ev_periodic_start (main_loop, &wal_streaming);
pgmoneta_log_info("pgmoneta: started on %s", config->host);
pgmoneta_log_debug("Management: %d", unix_management_socket);
for (int i = 0; i < metrics_fds_length; i++)
{
pgmoneta_log_debug("Metrics: %d", *(metrics_fds + i));
}
for (int i = 0; i < management_fds_length; i++)
{
pgmoneta_log_debug("Remote management: %d", *(management_fds + i));
}
pgmoneta_libev_engines();
pgmoneta_log_debug("libev engine: %s", pgmoneta_libev_engine(ev_backend(main_loop)));
#if (OPENSSL_VERSION_NUMBER < 0x10100000L)
pgmoneta_log_debug("%s", SSLeay_version(SSLEAY_VERSION));
#else
pgmoneta_log_debug("%s", OpenSSL_version(OPENSSL_VERSION));
#endif
pgmoneta_log_debug("Configuration size: %lu", shmem_size);
pgmoneta_log_debug("Known users: %d", config->number_of_users);
pgmoneta_log_debug("Known admins: %d", config->number_of_admins);
#ifdef HAVE_LINUX
sd_notifyf(0,
"READY=1\n"
"STATUS=Running\n"
"MAINPID=%lu", (unsigned long)getpid());
#endif
while (keep_running)
{
ev_loop(main_loop, 0);
}
pgmoneta_log_info("pgmoneta: shutdown");
#ifdef HAVE_LINUX
sd_notify(0, "STOPPING=1");
#endif
shutdown_management();
shutdown_metrics();
shutdown_mgt();
for (int i = 0; i < 5; i++)
{
ev_signal_stop(main_loop, (struct ev_signal*)&signal_watcher[i]);
}
ev_loop_destroy(main_loop);
free(metrics_fds);
free(management_fds);
remove_pidfile();
pgmoneta_stop_logging();
pgmoneta_destroy_shared_memory(shmem, shmem_size);
if (daemon || stop)
{
kill(0, SIGTERM);
}
return 0;
}
static void
accept_mgt_cb(struct ev_loop* loop, struct ev_io* watcher, int revents)
{
struct sockaddr_in6 client_addr;
socklen_t client_addr_length;
int client_fd;
signed char id;
char* payload_s1 = NULL;
char* payload_s2 = NULL;
char* payload_s3 = NULL;
char* payload_s4 = NULL;
int srv;
pid_t pid;
int number_of_results = 0;
struct accept_io* ai;
struct configuration* config;
if (EV_ERROR & revents)
{
pgmoneta_log_trace("accept_mgt_cb: got invalid event: %s", strerror(errno));
return;
}
config = (struct configuration*)shmem;
ai = (struct accept_io*)watcher;
client_addr_length = sizeof(client_addr);
client_fd = accept(watcher->fd, (struct sockaddr*)&client_addr, &client_addr_length);
if (client_fd == -1)
{
if (accept_fatal(errno) && keep_running)
{
pgmoneta_log_warn("Restarting management due to: %s (%d)", strerror(errno), watcher->fd);
shutdown_mgt();
if (pgmoneta_bind_unix_socket(config->unix_socket_dir, MAIN_UDS, &unix_management_socket))
{
pgmoneta_log_fatal("pgmoneta: Could not bind to %s", config->unix_socket_dir);
exit(1);
}
start_mgt();
pgmoneta_log_debug("Management: %d", unix_management_socket);
}
else
{
pgmoneta_log_debug("accept: %s (%d)", strerror(errno), watcher->fd);
}
errno = 0;
return;
}
/* Process internal management request -- f.ex. returning a file descriptor to the pool */
if (pgmoneta_management_read_header(client_fd, &id))
{
goto disconnect;
}
if (pgmoneta_management_read_payload(client_fd, id, &payload_s1, &payload_s2, &payload_s3, &payload_s4))
{
goto disconnect;
}
switch (id)
{
case MANAGEMENT_BACKUP:
pgmoneta_log_debug("pgmoneta: Management backup: %s", payload_s1);
if (!strcmp("all", payload_s1))
{
for (int i = 0; i < config->number_of_servers; i++)
{
if (config->servers[i].wal_streaming)
{
number_of_results++;
}
}
pgmoneta_management_write_int32(client_fd, number_of_results);
for (int i = 0; i < config->number_of_servers; i++)
{
if (config->servers[i].wal_streaming)
{
pid = fork();
if (pid == -1)
{
pgmoneta_management_write_int32(client_fd, 1);
/* No process */
pgmoneta_log_error("Cannot create process");
}
else if (pid == 0)
{
shutdown_ports();
pgmoneta_backup(client_fd, i, ai->argv);
}
}
}
}
else
{
srv = -1;
for (int i = 0; srv == -1 && i < config->number_of_servers; i++)
{
if (!strcmp(config->servers[i].name, payload_s1))
{
srv = i;
}
}
pgmoneta_management_write_int32(client_fd, 1);
if (srv != -1)
{
pid = fork();
if (pid == -1)
{
pgmoneta_management_write_int32(client_fd, 1);
/* No process */
pgmoneta_log_error("Cannot create process");
}
else if (pid == 0)
{
shutdown_ports();
pgmoneta_backup(client_fd, srv, ai->argv);
}
}
else
{
pgmoneta_management_write_int32(client_fd, 1);
pgmoneta_log_error("Backup: Unknown server %s", payload_s1);
}
}
free(payload_s1);
break;
case MANAGEMENT_LIST_BACKUP:
pgmoneta_log_debug("pgmoneta: Management list backup: %s", payload_s1);
srv = -1;
for (int i = 0; srv == -1 && i < config->number_of_servers; i++)
{
if (!strcmp(config->servers[i].name, payload_s1))
{
srv = i;
}
}
pid = fork();
if (pid == -1)
{
/* No process */
pgmoneta_log_error("Cannot create process");
}
else if (pid == 0)
{
shutdown_ports();
pgmoneta_management_write_list_backup(client_fd, srv);
exit(0);
}
if (srv == -1)
{
pgmoneta_log_error("List backup: Unknown server %s", payload_s1);
}
free(payload_s1);
break;
case MANAGEMENT_DELETE:
pgmoneta_log_debug("pgmoneta: Management delete: %s/%s", payload_s1, payload_s2);
srv = -1;
for (int i = 0; srv == -1 && i < config->number_of_servers; i++)
{
if (!strcmp(config->servers[i].name, payload_s1))
{
srv = i;
}
}
pid = fork();
if (pid == -1)
{
/* No process */
pgmoneta_log_error("Cannot create process");
}
else if (pid == 0)
{
int result;
char* backup_id = NULL;
shutdown_ports();
backup_id = malloc(strlen(payload_s2) + 1);
memset(backup_id, 0, strlen(payload_s2) + 1);
memcpy(backup_id, payload_s2, strlen(payload_s2));
result = pgmoneta_delete(srv, backup_id);
pgmoneta_delete_wal(srv);
pgmoneta_management_write_delete(client_fd, srv, result);
free(backup_id);
exit(0);
}
if (srv == -1)
{
pgmoneta_log_error("Delete: Unknown server %s", payload_s1);
}
free(payload_s1);
free(payload_s2);
break;
case MANAGEMENT_RESTORE:
pgmoneta_log_debug("pgmoneta: Management restore: %s/%s (%s) -> %s", payload_s1, payload_s2, payload_s3 != NULL ? payload_s3 : "none", payload_s4);
srv = -1;
for (int i = 0; srv == -1 && i < config->number_of_servers; i++)
{
if (!strcmp(config->servers[i].name, payload_s1))
{
srv = i;
}
}
pgmoneta_management_write_int32(client_fd, 1);
if (srv != -1)
{
pid = fork();
if (pid == -1)
{
pgmoneta_management_write_int32(client_fd, 1);
/* No process */
pgmoneta_log_error("Cannot create process");
}
else if (pid == 0)
{
char* backup_id = NULL;
char* position = NULL;
char* directory = NULL;
shutdown_ports();
backup_id = malloc(strlen(payload_s2) + 1);
memset(backup_id, 0, strlen(payload_s2) + 1);
memcpy(backup_id, payload_s2, strlen(payload_s2));
if (payload_s3 != NULL)
{
position = malloc(strlen(payload_s3) + 1);
memset(position, 0, strlen(payload_s3) + 1);
memcpy(position, payload_s3, strlen(payload_s3));
}
directory = malloc(strlen(payload_s4) + 1);
memset(directory, 0, strlen(payload_s4) + 1);
memcpy(directory, payload_s4, strlen(payload_s4));
pgmoneta_restore(client_fd, srv, backup_id, position, directory, ai->argv);
}
}
else
{
pgmoneta_management_write_int32(client_fd, 1);
pgmoneta_log_error("Restore: Unknown server %s", payload_s1);
}
free(payload_s1);
free(payload_s2);
free(payload_s3);
free(payload_s4);
break;
case MANAGEMENT_ARCHIVE:
pgmoneta_log_debug("pgmoneta: Management archive: %s/%s (%s) -> %s", payload_s1, payload_s2, payload_s3 != NULL ? payload_s3 : "none", payload_s4);
if (!strcmp("all", payload_s1))
{
for (int i = 0; i < config->number_of_servers; i++)
{
int number_of_backups = pgmoneta_get_number_of_valid_backups(i);
if (number_of_backups > 0 && (!strcmp("oldest", payload_s2) || !strcmp("newest", payload_s2)))
{
number_of_results++;
}
}
pgmoneta_management_write_int32(client_fd, number_of_results);
for (int i = 0; i < config->number_of_servers; i++)
{
pid = fork();
if (pid == -1)
{
pgmoneta_management_write_int32(client_fd, 1);
/* No process */
pgmoneta_log_error("Cannot create process");
}
else if (pid == 0)
{
int number_of_backups = pgmoneta_get_number_of_valid_backups(i);
if (number_of_backups > 0 && (!strcmp("oldest", payload_s2) || !strcmp("newest", payload_s2)))
{
char* backup_id = NULL;
char* position = NULL;
char* directory = NULL;
shutdown_ports();
backup_id = malloc(strlen(payload_s2) + 1);
memset(backup_id, 0, strlen(payload_s2) + 1);
memcpy(backup_id, payload_s2, strlen(payload_s2));
if (payload_s3 != NULL)
{
position = malloc(strlen(payload_s3) + 1);
memset(position, 0, strlen(payload_s3) + 1);
memcpy(position, payload_s3, strlen(payload_s3));
}
directory = malloc(strlen(payload_s4) + 1);
memset(directory, 0, strlen(payload_s4) + 1);
memcpy(directory, payload_s4, strlen(payload_s4));