path: root/database/sqlite/sqlite_db_migration.c

// 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], NULL);
    return 0;
}

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) {
        netdata_log_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) {
        netdata_log_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 NOT NULL DEFAULT 0;",
    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
};

const char *database_migrate_v9_v10[] = {
    "ALTER TABLE alert_hash ADD chart_labels TEXT;",
    NULL
};

const char *database_migrate_v10_v11[] = {
    "ALTER TABLE health_log ADD chart_name TEXT;",
    NULL
};

const char *database_migrate_v11_v12[] = {
    "ALTER TABLE health_log_detail ADD summary TEXT;",
    "ALTER TABLE alert_hash ADD summary TEXT;",
    NULL
};

static int do_migration_v1_v2(sqlite3 *database, const char *name)
{
    UNUSED(name);
    netdata_log_info("Running \"%s\" database migration", name);

    if (table_exists_in_database("host") && !column_exists_in_table("host", "hops"))
        return init_database_batch(database, &database_migrate_v1_v2[0]);
    return 0;
}

static int do_migration_v2_v3(sqlite3 *database, const char *name)
{
    UNUSED(name);
    netdata_log_info("Running \"%s\" database migration", name);

    if (table_exists_in_database("host") && !column_exists_in_table("host", "memory_mode"))
        return init_database_batch(database, &database_migrate_v2_v3[0]);
    return 0;
}

static int do_migration_v3_v4(sqlite3 *database, const char *name)
{
    UNUSED(name);
    netdata_log_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);
    netdata_log_info("Running \"%s\" database migration", name);

    return init_database_batch(database, &database_migrate_v4_v5[0]);
}

static int do_migration_v5_v6(sqlite3 *database, const char *name)
{
    UNUSED(name);
    netdata_log_info("Running \"%s\" database migration", name);

    return init_database_batch(database, &database_migrate_v5_v6[0]);
}

static int do_migration_v6_v7(sqlite3 *database, const char *name)
{
    UNUSED(name);
    netdata_log_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_v7_v8(sqlite3 *database, const char *name)
{
    UNUSED(name);
    netdata_log_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, "transition_id")) {