Adding upstream version 1.37.1.upstream/1.37.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 255 insertions, 0 deletions

diff --git a/database/sqlite/sqlite_db_migration.c b/database/sqlite/sqlite_db_migration.c
new file mode 100644
index 0000000..8b1d015
--- /dev/null
+++ b/database/sqlite/sqlite_db_migration.c
@@ -0,0 +1,255 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "sqlite_db_migration.h"
+
+static int return_int_cb(void *data, int argc, char **argv, char **column)
+{
+    int *status = data;
+    UNUSED(argc);
+    UNUSED(column);
+    *status = str2uint32_t(argv[0]);
+    return 0;
+}
+
+
+static int table_exists_in_database(const char *table)
+{
+    char *err_msg = NULL;
+    char sql[128];
+
+    int exists = 0;
+
+    snprintf(sql, 127, "select 1 from sqlite_schema where type = 'table' and name = '%s';", table);
+
+    int rc = sqlite3_exec_monitored(db_meta, sql, return_int_cb, (void *) &exists, &err_msg);
+    if (rc != SQLITE_OK) {
+        info("Error checking table existence; %s", err_msg);
+        sqlite3_free(err_msg);
+    }
+
+    return exists;
+}
+
+static int column_exists_in_table(const char *table, const char *column)
+{
+    char *err_msg = NULL;
+    char sql[128];
+
+    int exists = 0;
+
+    snprintf(sql, 127, "SELECT 1 FROM pragma_table_info('%s') where name = '%s';", table, column);
+
+    int rc = sqlite3_exec_monitored(db_meta, sql, return_int_cb, (void *) &exists, &err_msg);
+    if (rc != SQLITE_OK) {
+        info("Error checking column existence; %s", err_msg);
+        sqlite3_free(err_msg);
+    }
+
+    return exists;
+}
+
+const char *database_migrate_v1_v2[] = {
+    "ALTER TABLE host ADD hops INTEGER;",
+    NULL
+};
+
+const char *database_migrate_v2_v3[] = {
+    "ALTER TABLE host ADD memory_mode INT NOT NULL DEFAULT 0;",
+    "ALTER TABLE host ADD abbrev_timezone TEXT NOT NULL DEFAULT '';",
+    "ALTER TABLE host ADD utc_offset INT NOT NULL DEFAULT 0;",
+    "ALTER TABLE host ADD program_name TEXT NOT NULL DEFAULT 'unknown';",
+    "ALTER TABLE host ADD program_version TEXT NOT NULL DEFAULT 'unknown';",
+    "ALTER TABLE host ADD entries INT NOT NULL DEFAULT 0;",
+    "ALTER TABLE host ADD health_enabled INT NOT NULL DEFAULT 0;",
+    NULL
+};
+
+const char *database_migrate_v4_v5[] = {
+    "DROP TABLE IF EXISTS chart_active;",
+    "DROP TABLE IF EXISTS dimension_active;",
+    "DROP TABLE IF EXISTS chart_hash;",
+    "DROP TABLE IF EXISTS chart_hash_map;",
+    "DROP VIEW IF EXISTS v_chart_hash;",
+    NULL
+};
+
+const char *database_migrate_v5_v6[] = {
+    "DROP TRIGGER IF EXISTS tr_dim_del;",
+    "DROP TABLE IF EXISTS dimension_delete;",
+    NULL
+};
+
+
+static int do_migration_v1_v2(sqlite3 *database, const char *name)
+{
+    UNUSED(name);
+    info("Running \"%s\" database migration", name);
+
+    if (table_exists_in_database("host") && !column_exists_in_table("host", "hops"))
+        return init_database_batch(database, DB_CHECK_NONE, 0, &database_migrate_v1_v2[0]);
+    return 0;
+}
+
+static int do_migration_v2_v3(sqlite3 *database, const char *name)
+{
+    UNUSED(name);
+    info("Running \"%s\" database migration", name);
+
+    if (table_exists_in_database("host") && !column_exists_in_table("host", "memory_mode"))
+        return init_database_batch(database, DB_CHECK_NONE, 0, &database_migrate_v2_v3[0]);
+    return 0;
+}
+
+static int do_migration_v3_v4(sqlite3 *database, const char *name)
+{
+    UNUSED(name);
+    info("Running database migration %s", name);
+
+    char sql[256];
+
+    int rc;
+    sqlite3_stmt *res = NULL;
+    snprintfz(sql, 255, "SELECT name FROM sqlite_schema WHERE type ='table' AND name LIKE 'health_log_%%';");
+    rc = sqlite3_prepare_v2(database, sql, -1, &res, 0);
+    if (rc != SQLITE_OK) {
+        error_report("Failed to prepare statement to alter health_log tables");
+        return 1;
+    }
+
+    while (sqlite3_step_monitored(res) == SQLITE_ROW) {
+         char *table = strdupz((char *) sqlite3_column_text(res, 0));
+         if (!column_exists_in_table(table, "chart_context")) {
+             snprintfz(sql, 255, "ALTER TABLE %s ADD chart_context text", table);
+             sqlite3_exec_monitored(database, sql, 0, 0, NULL);
+         }
+         freez(table);
+    }
+
+    rc = sqlite3_finalize(res);
+    if (unlikely(rc != SQLITE_OK))
+        error_report("Failed to finalize statement when altering health_log tables, rc = %d", rc);
+
+    return 0;
+}
+
+static int do_migration_v4_v5(sqlite3 *database, const char *name)
+{
+    UNUSED(name);
+    info("Running \"%s\" database migration", name);
+
+    return init_database_batch(database, DB_CHECK_NONE, 0, &database_migrate_v4_v5[0]);
+}
+
+static int do_migration_v5_v6(sqlite3 *database, const char *name)
+{
+    UNUSED(name);
+    info("Running \"%s\" database migration", name);
+
+    return init_database_batch(database, DB_CHECK_NONE, 0, &database_migrate_v5_v6[0]);
+}
+
+static int do_migration_v6_v7(sqlite3 *database, const char *name)
+{
+    UNUSED(name);
+    info("Running \"%s\" database migration", name);
+
+    char sql[256];
+
+    int rc;
+    sqlite3_stmt *res = NULL;
+    snprintfz(sql, 255, "SELECT name FROM sqlite_schema WHERE type ='table' AND name LIKE 'aclk_alert_%%';");
+    rc = sqlite3_prepare_v2(database, sql, -1, &res, 0);
+    if (rc != SQLITE_OK) {
+        error_report("Failed to prepare statement to alter aclk_alert tables");
+        return 1;
+    }
+
+    while (sqlite3_step_monitored(res) == SQLITE_ROW) {
+         char *table = strdupz((char *) sqlite3_column_text(res, 0));
+         if (!column_exists_in_table(table, "filtered_alert_unique_id")) {
+             snprintfz(sql, 255, "ALTER TABLE %s ADD filtered_alert_unique_id", table);
+             sqlite3_exec_monitored(database, sql, 0, 0, NULL);
+             snprintfz(sql, 255, "UPDATE %s SET filtered_alert_unique_id = alert_unique_id", table);
+             sqlite3_exec_monitored(database, sql, 0, 0, NULL);
+         }
+         freez(table);
+    }
+
+    rc = sqlite3_finalize(res);
+    if (unlikely(rc != SQLITE_OK))
+        error_report("Failed to finalize statement when altering aclk_alert tables, rc = %d", rc);
+
+    return 0;
+}
+
+
+static int do_migration_noop(sqlite3 *database, const char *name)
+{
+    UNUSED(database);
+    UNUSED(name);
+    info("Running database migration %s", name);
+    return 0;
+}
+
+typedef struct database_func_migration_list {
+    char *name;
+    int (*func)(sqlite3 *database, const char *name);
+} DATABASE_FUNC_MIGRATION_LIST;
+
+
+static int migrate_database(sqlite3 *database, int target_version, char *db_name, DATABASE_FUNC_MIGRATION_LIST *migration_list)
+{
+    int user_version = 0;
+    char *err_msg = NULL;
+
+    int rc = sqlite3_exec_monitored(database, "PRAGMA user_version;", return_int_cb, (void *) &user_version, &err_msg);
+    if (rc != SQLITE_OK) {
+        info("Error checking the %s database version; %s", db_name, err_msg);
+        sqlite3_free(err_msg);
+    }
+
+    if (likely(user_version == target_version)) {
+        info("%s database version is %d (no migration needed)", db_name, target_version);
+        return target_version;
+    }
+
+    info("Database version is %d, current version is %d. Running migration for %s ...", user_version, target_version, db_name);
+    for (int i = user_version; i < target_version && migration_list[i].func; i++) {
+        rc = (migration_list[i].func)(database, migration_list[i].name);
+        if (unlikely(rc)) {
+            error_report("Database %s migration from version %d to version %d failed", db_name, i, i + 1);
+            return i;
+        }
+    }
+    return target_version;
+
+}
+
+DATABASE_FUNC_MIGRATION_LIST migration_action[] = {
+    {.name = "v0 to v1",  .func = do_migration_noop},
+    {.name = "v1 to v2",  .func = do_migration_v1_v2},
+    {.name = "v2 to v3",  .func = do_migration_v2_v3},
+    {.name = "v3 to v4",  .func = do_migration_v3_v4},
+    {.name = "v4 to v5",  .func = do_migration_v4_v5},
+    {.name = "v5 to v6",  .func = do_migration_v5_v6},
+    {.name = "v6 to v7",  .func = do_migration_v6_v7},
+    // the terminator of this array
+    {.name = NULL, .func = NULL}
+};
+
+DATABASE_FUNC_MIGRATION_LIST context_migration_action[] = {
+    {.name = "v0 to v1",  .func = do_migration_noop},
+    // the terminator of this array
+    {.name = NULL, .func = NULL}
+};
+
+
+int perform_database_migration(sqlite3 *database, int target_version)
+{
+    return migrate_database(database, target_version, "metadata", migration_action);
+}
+
+int perform_context_database_migration(sqlite3 *database, int target_version)
+{
+    return migrate_database(database, target_version, "context", context_migration_action);
+}