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core: Filter by unit name behind the D-Bus, instead on the client side (#3142)

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This commit improves systemd performance on the systems which have
thousands of units.
This commit is contained in:
kayrus 2016-04-29 15:59:51 +02:00 committed by Lennart Poettering
parent 3e39355a96
commit 313fe66fbd
8 changed files with 143 additions and 24 deletions
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52
src/core/dbus-manager.c
View File

@ -889,7 +889,7 @@ static int method_reset_failed(sd_bus_message *message, void *userdata, sd_bus_e
return sd_bus_reply_method_return(message, NULL);
}
static int list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_error *error, char **states) {
static int list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_error *error, char **states, char **patterns) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
Manager *m = userdata;
const char *k;
@ -929,6 +929,10 @@ static int list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_e
!strv_contains(states, unit_sub_state_to_string(u)))
continue;
if (!strv_isempty(patterns) &&
!strv_fnmatch_or_empty(patterns, u->id, FNM_NOESCAPE))
continue;
unit_path = unit_dbus_path(u);
if (!unit_path)
return -ENOMEM;
@ -963,7 +967,7 @@ static int list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_e
}
static int method_list_units(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return list_units_filtered(message, userdata, error, NULL);
return list_units_filtered(message, userdata, error, NULL, NULL);
}
static int method_list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_error *error) {
@ -974,7 +978,23 @@ static int method_list_units_filtered(sd_bus_message *message, void *userdata, s
if (r < 0)
return r;
return list_units_filtered(message, userdata, error, states);
return list_units_filtered(message, userdata, error, states, NULL);
}
static int method_list_units_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_strv_free_ char **states = NULL;
_cleanup_strv_free_ char **patterns = NULL;
int r;
r = sd_bus_message_read_strv(message, &states);
if (r < 0)
return r;
r = sd_bus_message_read_strv(message, &patterns);
if (r < 0)
return r;
return list_units_filtered(message, userdata, error, states, patterns);
}
static int method_list_jobs(sd_bus_message *message, void *userdata, sd_bus_error *error) {
@ -1465,7 +1485,7 @@ static int method_set_exit_code(sd_bus_message *message, void *userdata, sd_bus_
return sd_bus_reply_method_return(message, NULL);
}
static int method_list_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
static int list_unit_files_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error, char **states, char **patterns) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
Manager *m = userdata;
UnitFileList *item;
@ -1490,7 +1510,7 @@ static int method_list_unit_files(sd_bus_message *message, void *userdata, sd_bu
if (!h)
return -ENOMEM;
r = unit_file_get_list(m->unit_file_scope, NULL, h);
r = unit_file_get_list(m->unit_file_scope, NULL, h, states, patterns);
if (r < 0)
goto fail;
@ -1518,6 +1538,26 @@ fail:
return r;
}
static int method_list_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
return list_unit_files_by_patterns(message, userdata, error, NULL, NULL);
}
static int method_list_unit_files_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_strv_free_ char **states = NULL;
_cleanup_strv_free_ char **patterns = NULL;
int r;
r = sd_bus_message_read_strv(message, &states);
if (r < 0)
return r;
r = sd_bus_message_read_strv(message, &patterns);
if (r < 0)
return r;
return list_unit_files_by_patterns(message, userdata, error, states, patterns);
}
static int method_get_unit_file_state(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
const char *name;
@ -2073,6 +2113,7 @@ const sd_bus_vtable bus_manager_vtable[] = {
SD_BUS_METHOD("ResetFailed", NULL, NULL, method_reset_failed, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ListUnits", NULL, "a(ssssssouso)", method_list_units, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ListUnitsFiltered", "as", "a(ssssssouso)", method_list_units_filtered, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ListUnitsByPatterns", "asas", "a(ssssssouso)", method_list_units_by_patterns, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ListJobs", NULL, "a(usssoo)", method_list_jobs, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Subscribe", NULL, NULL, method_subscribe, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Unsubscribe", NULL, NULL, method_unsubscribe, SD_BUS_VTABLE_UNPRIVILEGED),
@ -2091,6 +2132,7 @@ const sd_bus_vtable bus_manager_vtable[] = {
SD_BUS_METHOD("UnsetEnvironment", "as", NULL, method_unset_environment, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("UnsetAndSetEnvironment", "asas", NULL, method_unset_and_set_environment, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ListUnitFiles", NULL, "a(ss)", method_list_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ListUnitFilesByPatterns", "asas", "a(ss)", method_list_unit_files_by_patterns, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("GetUnitFileState", "s", "s", method_get_unit_file_state, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("EnableUnitFiles", "asbb", "ba(sss)", method_enable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("DisableUnitFiles", "asb", "a(sss)", method_disable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),

8
src/core/org.freedesktop.systemd1.conf
View File

@ -68,10 +68,18 @@
send_interface="org.freedesktop.systemd1.Manager"
send_member="ListUnitsFiltered"/>
<allow send_destination="org.freedesktop.systemd1"
send_interface="org.freedesktop.systemd1.Manager"
send_member="ListUnitsByPatterns"/>
<allow send_destination="org.freedesktop.systemd1"
send_interface="org.freedesktop.systemd1.Manager"
send_member="ListUnitFiles"/>
<allow send_destination="org.freedesktop.systemd1"
send_interface="org.freedesktop.systemd1.Manager"
send_member="ListUnitFilesByPatterns"/>
<allow send_destination="org.freedesktop.systemd1"
send_interface="org.freedesktop.systemd1.Manager"
send_member="GetUnitFileState"/>

11
src/shared/install.c
View File

@ -2653,7 +2653,9 @@ DEFINE_TRIVIAL_CLEANUP_FUNC(UnitFileList*, unit_file_list_free_one);
int unit_file_get_list(
UnitFileScope scope,
const char *root_dir,
Hashmap *h) {
Hashmap *h,
char **states,
char **patterns) {
_cleanup_lookup_paths_free_ LookupPaths paths = {};
char **i;
@ -2685,6 +2687,9 @@ int unit_file_get_list(
if (!unit_name_is_valid(de->d_name, UNIT_NAME_ANY))
continue;
if (!strv_fnmatch_or_empty(patterns, de->d_name, FNM_NOESCAPE))
continue;
if (hashmap_get(h, de->d_name))
continue;
@ -2705,6 +2710,10 @@ int unit_file_get_list(
if (r < 0)
f->state = UNIT_FILE_BAD;
if (!strv_isempty(states) &&
!strv_contains(states, unit_file_state_to_string(f->state)))
continue;
r = hashmap_put(h, basename(f->path), f);
if (r < 0)
return r;

2
src/shared/install.h
View File

@ -232,7 +232,7 @@ int unit_file_add_dependency(
int unit_file_get_state(UnitFileScope scope, const char *root_dir, const char *filename, UnitFileState *ret);
int unit_file_exists(UnitFileScope scope, const LookupPaths *paths, const char *name);
int unit_file_get_list(UnitFileScope scope, const char *root_dir, Hashmap *h);
int unit_file_get_list(UnitFileScope scope, const char *root_dir, Hashmap *h, char **states, char **patterns);
Hashmap* unit_file_list_free(Hashmap *h);
int unit_file_changes_add(UnitFileChange **changes, unsigned *n_changes, UnitFileChangeType type, const char *path, const char *source);

86
src/systemctl/systemctl.c
View File

@ -541,6 +541,7 @@ static int get_unit_list(
size_t size = c;
int r;
UnitInfo u;
bool fallback = false;
assert(bus);
assert(unit_infos);
@ -552,8 +553,33 @@ static int get_unit_list(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"ListUnitsFiltered");
"ListUnitsByPatterns");
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append_strv(m, arg_states);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append_strv(m, patterns);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_call(bus, m, 0, &error, &reply);
if (r < 0 && sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_METHOD)) {
/* Fallback to legacy ListUnitsFiltered method */
fallback = true;
log_debug_errno(r, "Failed to list units: %s Falling back to ListUnitsFiltered method.", bus_error_message(&error, r));
m = sd_bus_message_unref(m);
sd_bus_error_free(&error);
r = sd_bus_message_new_method_call(
bus,
&m,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"ListUnitsFiltered");
if (r < 0)
return bus_log_create_error(r);
@ -562,6 +588,7 @@ static int get_unit_list(
return bus_log_create_error(r);
r = sd_bus_call(bus, m, 0, &error, &reply);
}
if (r < 0)
return log_error_errno(r, "Failed to list units: %s", bus_error_message(&error, r));
@ -572,7 +599,7 @@ static int get_unit_list(
while ((r = bus_parse_unit_info(reply, &u)) > 0) {
u.machine = machine;
if (!output_show_unit(&u, patterns))
if (!output_show_unit(&u, fallback ? patterns : NULL))
continue;
if (!GREEDY_REALLOC(*unit_infos, size, c+1))
@ -1282,7 +1309,7 @@ static int compare_unit_file_list(const void *a, const void *b) {
return strcasecmp(basename(u->path), basename(v->path));
}
static bool output_show_unit_file(const UnitFileList *u, char **patterns) {
static bool output_show_unit_file(const UnitFileList *u, char **states, char **patterns) {
assert(u);
if (!strv_fnmatch_or_empty(patterns, basename(u->path), FNM_NOESCAPE))
@ -1299,8 +1326,8 @@ static bool output_show_unit_file(const UnitFileList *u, char **patterns) {
return false;
}
if (!strv_isempty(arg_states) &&
!strv_find(arg_states, unit_file_state_to_string(u->state)))
if (!strv_isempty(states) &&
!strv_find(states, unit_file_state_to_string(u->state)))
return false;
return true;
@ -1373,6 +1400,7 @@ static int list_unit_files(int argc, char *argv[], void *userdata) {
const char *state;
char *path;
int r;
bool fallback = false;
pager_open(arg_no_pager, false);
@ -1386,7 +1414,7 @@ static int list_unit_files(int argc, char *argv[], void *userdata) {
if (!h)
return log_oom();
r = unit_file_get_list(arg_scope, arg_root, h);
r = unit_file_get_list(arg_scope, arg_root, h, arg_states, strv_skip(argv, 1));
if (r < 0) {
unit_file_list_free(h);
return log_error_errno(r, "Failed to get unit file list: %m");
@ -1401,7 +1429,7 @@ static int list_unit_files(int argc, char *argv[], void *userdata) {
}
HASHMAP_FOREACH(u, h, i) {
if (!output_show_unit_file(u, strv_skip(argv, 1)))
if (!output_show_unit_file(u, NULL, NULL))
continue;
units[c++] = *u;
@ -1411,6 +1439,7 @@ static int list_unit_files(int argc, char *argv[], void *userdata) {
assert(c <= n_units);
hashmap_free(h);
} else {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus;
@ -1418,15 +1447,44 @@ static int list_unit_files(int argc, char *argv[], void *userdata) {
if (r < 0)
return r;
r = sd_bus_call_method(
r = sd_bus_message_new_method_call(
bus,
&m,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"ListUnitFiles",
&error,
&reply,
NULL);
"ListUnitFilesByPatterns");
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append_strv(m, arg_states);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append_strv(m, strv_skip(argv, 1));
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_call(bus, m, 0, &error, &reply);
if (r < 0 && sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_METHOD)) {
/* Fallback to legacy ListUnitFiles method */
fallback = true;
log_debug_errno(r, "Failed to list unit files: %s Falling back to ListUnitsFiles method.", bus_error_message(&error, r));
m = sd_bus_message_unref(m);
sd_bus_error_free(&error);
r = sd_bus_message_new_method_call(
bus,
&m,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"ListUnitFiles");
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_call(bus, m, 0, &error, &reply);
}
if (r < 0)
return log_error_errno(r, "Failed to list unit files: %s", bus_error_message(&error, r));
@ -1444,7 +1502,9 @@ static int list_unit_files(int argc, char *argv[], void *userdata) {
unit_file_state_from_string(state)
};
if (output_show_unit_file(&units[c], strv_skip(argv, 1)))
if (output_show_unit_file(&units[c],
fallback ? arg_states : NULL,
fallback ? strv_skip(argv, 1) : NULL))
c++;
}

2
src/test/test-install-root.c
View File

@ -606,7 +606,7 @@ static void test_preset_and_list(const char *root) {
assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "preset-no.service", &state) >= 0 && state == UNIT_FILE_DISABLED);
assert_se(h = hashmap_new(&string_hash_ops));
assert_se(unit_file_get_list(UNIT_FILE_SYSTEM, root, h) >= 0);
assert_se(unit_file_get_list(UNIT_FILE_SYSTEM, root, h, NULL, NULL) >= 0);
p = strjoina(root, "/usr/lib/systemd/system/preset-yes.service");
q = strjoina(root, "/usr/lib/systemd/system/preset-no.service");

2
src/test/test-install.c
View File

@ -50,7 +50,7 @@ int main(int argc, char* argv[]) {
log_parse_environment();
h = hashmap_new(&string_hash_ops);
r = unit_file_get_list(UNIT_FILE_SYSTEM, NULL, h);
r = unit_file_get_list(UNIT_FILE_SYSTEM, NULL, h, NULL, NULL);
assert_se(r == 0);
HASHMAP_FOREACH(p, h, i) {

2
src/test/test-unit-file.c
View File

@ -53,7 +53,7 @@ static int test_unit_file_get_set(void) {
h = hashmap_new(&string_hash_ops);
assert_se(h);
r = unit_file_get_list(UNIT_FILE_SYSTEM, NULL, h);
r = unit_file_get_list(UNIT_FILE_SYSTEM, NULL, h, NULL, NULL);
if (r == -EPERM || r == -EACCES) {
printf("Skipping test: unit_file_get_list: %s", strerror(-r));