| /*
* Sai server
*
* Copyright (C) 2019 - 2025 Andy Green <andy@warmcat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation:
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*
* The same ws interface is connected-to by builders (on path /builder), and
* provides the query transport for browsers (on path /browse).
*
* There's a single server slite3 database containing events, and a separate
* sqlite3 database file for each event, it only contains tasks and logs for
* the event and can be deleted when the event record associated with it is
* deleted. This is to keep is scalable when there may be thousands of events
* and related tasks and logs stored.
*/
#include <libwebsockets.h>
#include <string.h>
#include <signal.h>
#include <time.h>
#include <stdio.h>
#include <fcntl.h>
#include "s-private.h"
int
sais_power_rx(struct vhd *vhd, struct pss *pss, uint8_t *buf,
size_t bl, unsigned int ss_flags)
{
struct lejp_ctx ctx;
lws_struct_args_t a;
sai_power_state_t *ps;
const lws_struct_map_t lsm_schema_map_power[] = {
LSM_SCHEMA(sai_power_state_t, NULL, lsm_power_state,
"com.warmcat.sai.powerstate"),
LSM_SCHEMA(sai_power_managed_builders_t, NULL,
lsm_power_managed_builders_list,
"com.warmcat.sai.power_managed_builders"),
LSM_SCHEMA(sai_stay_state_update_t, NULL,
lsm_stay_state_update,
"com.warmcat.sai.stay_state_update"),
};
/* This is a message from sai-power */
lwsl_notice("RX from sai-power: %.*s\n", (int)bl, (const char *)buf);
memset(&a, 0, sizeof(a));
a.map_st[0] = lsm_schema_map_power;
a.map_entries_st[0] = LWS_ARRAY_SIZE(lsm_schema_map_power);
a.ac_block_size = 512;
lws_struct_json_init_parse(&ctx, NULL, &a);
if (lejp_parse(&ctx, buf, (int)bl) < 0 || !a.dest) {
lwsl_warn("Failed to parse msg from sai-power\n");
lwsac_free(&a.ac);
return 1;
}
switch (a.top_schema_index) {
case 0: /* powerstate */
ps = (sai_power_state_t *)a.dest;
lwsl_notice("%s: powerstate received: %d %d\n", __func__, ps->powering_up, ps->powering_down);
if (ps->powering_up) {
lwsl_notice("sai-power is powering up: %s\n", ps->host);
sais_set_builder_power_state(vhd, ps->host, 1, 0);
break;
}
if (ps->powering_down) {
lwsl_notice("sai-power is powering down: %s\n", ps->host);
sais_set_builder_power_state(vhd, ps->host, 0, 1);
}
break;
case 1: {
sai_power_managed_builders_t *pmb = (sai_power_managed_builders_t *)a.dest;
char q[256];
/*
* We received the PCON topology and registered builders from sai-power.
*
* 1. Store PCONs in DB.
* 2. Update builders' PCON association (if we have a table or column for it).
*/
sai_sqlite3_statement(vhd->server.pdb, "BEGIN TRANSACTION", "txn begin");
/* Clear old PCONs? Or Upsert?
* We probably want to replace since this is authoritative from sai-power.
* But maybe just clear everything first?
*/
sai_sqlite3_statement(vhd->server.pdb, "DELETE FROM power_controllers", "delete pcons");
sai_sqlite3_statement(vhd->server.pdb, "DELETE FROM pcon_builders", "delete pcon_builders");
lws_start_foreach_dll(struct lws_dll2 *, p, pmb->power_controllers.head) {
sai_power_controller_t *pc = lws_container_of(p, sai_power_controller_t, list);
/* Insert PCON */
lws_snprintf(q, sizeof(q),
"INSERT INTO power_controllers (name, type, url, depends_on, state) VALUES ('%s', '%s', '', '%s', %d)",
pc->name, pc->type, pc->depends_on, pc->on);
sai_sqlite3_statement(vhd->server.pdb, q, "insert pcon");
/* Insert Controlled Builders */
lws_start_foreach_dll(struct lws_dll2 *, pb, pc->controlled_builders_owner.head) {
sai_controlled_builder_t *cb = lws_container_of(pb, sai_controlled_builder_t, list);
lws_snprintf(q, sizeof(q),
"INSERT INTO pcon_builders (pcon_name, builder_name) VALUES ('%s', '%s')",
pc->name, cb->name);
lwsl_notice("%s: Inserting pcon_builder: pcon='%s', builder='%s'\n", __func__, pc->name, cb->name);
sai_sqlite3_statement(vhd->server.pdb, q, "insert pcon_builder");
/* Update builders table with pcon name */
/* Note: builders table key is 'name'. */
lws_snprintf(q, sizeof(q),
"UPDATE builders SET pcon = '%s' WHERE name = '%s' OR name LIKE '%s.%%'",
pc->name, cb->name, cb->name);
sai_sqlite3_statement(vhd->server.pdb, q, "update builder pcon");
} lws_end_foreach_dll(pb);
} lws_end_foreach_dll(p);
sai_sqlite3_statement(vhd->server.pdb, "COMMIT", "txn commit");
sais_list_builders(vhd);
break;
}
case 2: {
sai_stay_state_update_t *ssu = (sai_stay_state_update_t *)a.dest;
sai_plat_t *sp;
lwsl_notice("%s: Received stay_state_update for %s, stay_on=%d\n",
__func__, ssu->builder_name, ssu->stay_on);
lws_start_foreach_dll(struct lws_dll2 *, p,
vhd->server.builder_owner.head) {
sp = lws_container_of(p, sai_plat_t,
sai_plat_list);
const char *dot = strchr(sp->name, '.');
if (dot && !strncmp(sp->name, ssu->builder_name, (size_t)(dot - sp->name))) {
lwsl_notice("%s: Updating builder %s stay_on from %d to %d\n",
__func__, sp->name, sp->stay_on, ssu->stay_on);
sp->stay_on = ssu->stay_on;
sais_list_builders(vhd);
break;
}
} lws_end_foreach_dll(p);
break;
}
default:
lwsl_warn("%s: unknown schema\n", __func__);
break;
}
lwsac_free(&a.ac);
return 0;
}
int
sais_power_tx(struct vhd *vhd, struct pss *pss, uint8_t *buf, size_t bl)
{
uint8_t *start = buf + LWS_PRE, *p = start, *end = p + bl - LWS_PRE - 1;
enum lws_write_protocol flags;
char diff = 0;
size_t w;
int n;
if (pss->stay_owner.head) {
/*
* Pending stay message to send to power
*/
sai_stay_t *s = lws_container_of(pss->stay_owner.head,
sai_stay_t, list);
lws_struct_serialize_t *js;
js = lws_struct_json_serialize_create(lsm_schema_stay,
LWS_ARRAY_SIZE(lsm_schema_stay), 0, s);
if (!js) {
lwsl_warn("%s: failed to serialize stay\n", __func__);
return 1;
}
n = (int)lws_struct_json_serialize(js, p, lws_ptr_diff_size_t(end, p), &w);
lws_struct_json_serialize_destroy(&js);
lwsl_wsi_notice(pss->wsi, "%s: server issuing stay notice\n", __func__);
sai_dump_stderr(start, w);
lws_dll2_remove(&s->list);
free(s);
flags = lws_write_ws_flags(LWS_WRITE_TEXT, 1, 1);
if (lws_write(pss->wsi, start, w, flags) < 0)
return -1;
lws_callback_on_writable(pss->wsi);
return 0;
}
n = 0;
lws_start_foreach_dll(struct lws_dll2 *, px, vhd->pending_plats.head) {
sais_plat_t *pl = lws_container_of(px, sais_plat_t, list);
size_t m;
if (n)
*p++ = ',';
m = strlen(pl->plat);
if (lws_ptr_diff_size_t(end, p) < m + 2)
break;
memcpy(p, pl->plat, m);
p += m;
*p = '\0';
n = 1;
} lws_end_foreach_dll(px);
/*
* Don't resend the same status over and over
*/
if (strncmp(pss->last_power_report, (const char *)start, lws_ptr_diff_size_t(p, start) + 1)) {
diff = 1;
memcpy(pss->last_power_report, start, lws_ptr_diff_size_t(p, start) + 1);
}
if (diff /* && start != p */) {
lwsl_notice("%s: detected jobs for %.*s\n", __func__,
(int)lws_ptr_diff_size_t(p, start), start);
if (lws_write(pss->wsi, start, lws_ptr_diff_size_t(p, start),
LWS_WRITE_TEXT) < 0)
return -1;
lws_callback_on_writable(pss->wsi);
}
return 0;
}
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