ssb: Fix and test the messages_stats trigger.

src/ssb.db.c

@@ -150,9 +150,16 @@ void tf_ssb_db_init(tf_ssb_t* ssb)
 		"CREATE TRIGGER IF NOT EXISTS messages_ai_stats AFTER INSERT ON messages BEGIN INSERT INTO messages_stats(author, max_sequence, max_timestamp) VALUES (new.author, "
 		"new.sequence, new.timestamp) ON CONFLICT DO UPDATE SET max_sequence = MAX(max_sequence, new.sequence), max_timestamp = MAX(max_timestamp, "
 		"new.timestamp); END");
+	_tf_ssb_db_exec(db, "DROP TRIGGER IF EXISTS messages_ad_stats");
 	_tf_ssb_db_exec(db,
-		"CREATE TRIGGER IF NOT EXISTS messages_ad_stats AFTER DELETE ON messages BEGIN UPDATE messages_stats SET max_sequence = (SELECT MAX(messages.sequence) FROM messages WHERE "
+		"CREATE TRIGGER IF NOT EXISTS messages_ad_stats AFTER DELETE ON messages BEGIN "
-		"messages.author = old.author), max_timestamp = (SELECT MAX(messages.timestamp) FROM messages WHERE messages.author = old.author); END");
+		"UPDATE messages_stats SET max_sequence = updated.sequence, max_timestamp = updated.timestamp "
+		"FROM ("
+		"  SELECT COALESCE(MAX(messages.sequence), 0) AS sequence, COALESCE(MAX(messages.timestamp), 0) AS timestamp "
+		"  FROM messages WHERE messages.author = old.author) AS updated "
+		"WHERE messages_stats.author = old.author; "
+		"DELETE FROM messages_stats WHERE messages_stats.author = old.author AND messages_stats.max_sequence = 0; "
+		"END");
 
 	if (_tf_ssb_db_has_rows(db, "SELECT name FROM pragma_table_info('messages') WHERE name = 'content' AND type == 'TEXT'"))
 	{

src/ssb.tests.c

@@ -18,6 +18,8 @@
 
 #include "sodium/crypto_sign.h"
 
+#include "sqlite3.h"
+
 #if defined(__APPLE__)
 #include <TargetConditionals.h>
 #endif
@@ -659,7 +661,7 @@ void tf_ssb_test_following(const tf_test_options_t* options)
 
 void tf_ssb_test_bench(const tf_test_options_t* options)
 {
-	tf_printf("Testing following.\n");
+	tf_printf("Testing bench.\n");
 
 	uv_loop_t loop = { 0 };
 	uv_loop_init(&loop);
@@ -1393,4 +1395,87 @@ void tf_ssb_test_invite(const tf_test_options_t* options)
 	uv_loop_close(&loop);
 }
 
+void tf_ssb_test_triggers(const tf_test_options_t* options)
+{
+	tf_printf("Testing triggers.\n");
+
+	uv_loop_t loop = { 0 };
+	uv_loop_init(&loop);
+
+	tf_trace_t* trace = tf_trace_create();
+
+	unlink("out/test_db0.sqlite");
+	tf_ssb_t* ssb0 = tf_ssb_create(&loop, NULL, "file:out/test_db0.sqlite", NULL);
+	tf_ssb_set_trace(ssb0, trace);
+	tf_ssb_generate_keys(ssb0);
+
+	char id0[k_id_base64_len] = { 0 };
+	tf_ssb_whoami(ssb0, id0, sizeof(id0));
+
+	uint8_t priv0[512];
+	tf_ssb_get_private_key(ssb0, priv0, sizeof(priv0));
+
+	struct timespec start_time = { 0 };
+	struct timespec end_time = { 0 };
+	clock_gettime(CLOCK_REALTIME, &start_time);
+	const int k_messages = 5;
+	JSValue obj = JS_NewObject(tf_ssb_get_context(ssb0));
+	JS_SetPropertyStr(tf_ssb_get_context(ssb0), obj, "type", JS_NewString(tf_ssb_get_context(ssb0), "post"));
+	JS_SetPropertyStr(tf_ssb_get_context(ssb0), obj, "text", JS_NewString(tf_ssb_get_context(ssb0), "Hello, world!"));
+	for (int i = 0; i < k_messages; i++)
+	{
+		bool stored = false;
+		JSValue signed_message = tf_ssb_sign_message(ssb0, id0, priv0, obj, NULL, 0);
+		tf_ssb_verify_strip_and_store_message(ssb0, signed_message, _message_stored, &stored);
+		JS_FreeValue(tf_ssb_get_context(ssb0), signed_message);
+		_wait_stored(ssb0, &stored);
+	}
+	JS_FreeValue(tf_ssb_get_context(ssb0), obj);
+	clock_gettime(CLOCK_REALTIME, &end_time);
+	tf_printf("insert = %f seconds\n", (end_time.tv_sec - start_time.tv_sec) + (end_time.tv_nsec - start_time.tv_nsec) / 1e9);
+
+	int64_t max_sequence = 0;
+	tf_ssb_db_get_latest_message_by_author(ssb0, id0, &max_sequence, NULL, 0);
+	tf_printf("max_sequence=%" PRId64 "\n", max_sequence);
+	assert(max_sequence == 5);
+
+	sqlite3* db = tf_ssb_acquire_db_writer(ssb0);
+	sqlite3_exec(db, "DELETE FROM messages WHERE sequence = 5", NULL, NULL, NULL);
+	tf_ssb_release_db_writer(ssb0, db);
+
+	max_sequence = 0;
+	tf_ssb_db_get_latest_message_by_author(ssb0, id0, &max_sequence, NULL, 0);
+	tf_printf("max_sequence=%" PRId64 "\n", max_sequence);
+	assert(max_sequence == 4);
+
+	tf_ssb_acquire_db_writer(ssb0);
+	sqlite3_exec(db, "DELETE FROM messages", NULL, NULL, NULL);
+	tf_ssb_release_db_writer(ssb0, db);
+
+	max_sequence = 0;
+	tf_ssb_db_get_latest_message_by_author(ssb0, id0, &max_sequence, NULL, 0);
+	tf_printf("max_sequence=%" PRId64 "\n", max_sequence);
+	assert(max_sequence == 0);
+
+	uv_run(&loop, UV_RUN_DEFAULT);
+
+	char* trace_data = tf_trace_export(trace);
+	if (trace_data)
+	{
+		FILE* file = fopen("out/trace.json", "wb");
+		if (file)
+		{
+			fwrite(trace_data, 1, strlen(trace_data), file);
+			fclose(file);
+		}
+		tf_free(trace_data);
+	}
+
+	tf_ssb_destroy(ssb0);
+
+	tf_trace_destroy(trace);
+
+	uv_loop_close(&loop);
+}
+
 #endif

src/ssb.tests.h

@@ -83,4 +83,10 @@ void tf_ssb_test_connect_str(const tf_test_options_t* options);
 */
 void tf_ssb_test_invite(const tf_test_options_t* options);
 
+/**
+** Test triggers.
+** @param options The test options.
+*/
+void tf_ssb_test_triggers(const tf_test_options_t* options);
+
 /** @} */

src/tests.c

@@ -1078,6 +1078,7 @@ void tf_tests(const tf_test_options_t* options)
 	_tf_test_run(options, "replicate", tf_ssb_test_replicate, false);
 	_tf_test_run(options, "connect_str", tf_ssb_test_connect_str, false);
 	_tf_test_run(options, "invite", tf_ssb_test_invite, false);
+	_tf_test_run(options, "triggers", tf_ssb_test_triggers, false);
 	tf_printf("Tests completed.\n");
 #endif
 }