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database compare generate SQL WIP

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OpenXE 2022-11-24 22:16:50 +00:00
parent 6dad06e07d
commit 1c955a5bca
1 changed files with 183 additions and 1 deletions
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184
tools/database_compare/database_compare.php
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@ -98,6 +98,18 @@ if ($argc > 1) {
$onlytables = false;
}
if (in_array('-upgrade', $argv)) {
$upgrade = true;
} else {
$upgrade = false;
}
if (in_array('-clean', $argv)) {
$clean = true;
} else {
$clean = false;
}
echo("--------------- Loading from database $schema@$host... ---------------\n");
$tables = load_tables_from_db($host, $schema, $user, $passwd);
@ -122,7 +134,7 @@ if ($argc > 1) {
echo("--------------- Export to CSV complete. ---------------\n");
}
if ($compare) {
if ($compare || $upgrade) {
// Results here as ['text'] ['diff']
$compare_differences = array();
@ -168,6 +180,142 @@ if ($argc > 1) {
echo("--------------- Comparison complete. ---------------\n");
}
if ($upgrade) {
// First create all tables that are missing in the db
echo("--------------- Upgrading database... ---------------\n");
$compare_differences = compare_table_array($compare_tables,"in CSV",$tables,"in DB",true);
foreach ($compare_differences as $compare_difference) {
switch ($compare_difference['type']) {
case 'Table existance':
// Get table definition from CSV
$table_name = $compare_difference['in CSV'];
$table_key = array_search($table_name,array_column($compare_tables,'name'));
if (!empty($table_key)) {
$table = $compare_tables[$table_key];
switch ($table['type']) {
case 'BASE TABLE':
// Create table in DB
$sql = "";
$sql = "CREATE TABLE `".$table['name']."` (";
$comma = "";
$primary_keys = array();
$keys = array();
foreach ($table['columns'] as $column) {
$sql .= $comma.column_sql_definition($table_name, $column);
$comma = ",";
if ($column['Key'] == 'PRI') {
$primary_keys[] = $column['Field'];
}
if ($column['Key'] == 'MUL') {
$keys[] = $column['Field'];
}
}
if (!empty($primary_keys)) {
$sql .= ", PRIMARY KEY (".implode(",",$primary_keys).")";
}
if (!empty($keys)) {
$sql .= ", KEY (".implode("), KEY (",$keys).")";
}
$sql .= ");";
echo($sql."\n");
break;
default:
echo("Upgrade type '".$table['type']."' on table '".$table['name']."' not supported.\n");
break;
}
} else {
echo("Error while creating table $table_name.\n");
}
break;
case 'Column existance':
$table_name = $compare_difference['table'];
$column_name = $compare_difference['in CSV'];
$table_key = array_search($table_name,array_column($compare_tables,'name'));
if (!empty($table_key)) {
$table = $compare_tables[$table_key];
$columns = $table['columns'];
$column_key = array_search($column_name,array_column($columns,'Field'));
if (!empty($column_key)) {
$column = $table['columns'][$column_key];
$sql = "ALTER TABLE `$table_name` CREATE COLUMN ";
$sql .= column_sql_definition($table_name, $column);
$sql .= ";";
echo($sql."\n");
// KEYS?
}
else {
echo("Error column_key while creating column $column_name in table '".$table['name']."'\n");
}
}
else {
echo("Error table_key while creating column $column_name in table $table_name.\n");
}
// Create Column in DB
break;
case 'Column definition':
$table_name = $compare_difference['table'];
$column_name = $compare_difference['column'];
$table_key = array_search($table_name,array_column($compare_tables,'name'));
if (!empty($table_key)) {
$table = $compare_tables[$table_key];
$columns = $table['columns'];
$column_key = array_search($column_name,array_column($columns,'Field'));
if (!empty($column_key)) {
$column = $table['columns'][$column_key];
$sql = "ALTER TABLE `$table_name` MODIFY COLUMN ";
$sql .= column_sql_definition($table_name, $column);
$sql .= ";";
echo($sql."\n");
}
else {
echo("Error column_key while modifying column $column_name in table '".$table['name']."'\n");
print_r($columns);
}
}
else {
echo("Error table_key while modifying column $column_name in table $table_name.\n");
}
// Modify Column in DB
break;
case 'Table count':
// Nothing to do
break;
case 'Table type':
echo("Upgrade type '".$compare_difference['type']."' on table '".$compare_difference['table']."' not supported.\n");
break;
default:
echo("Upgrade type '".$compare_difference['type']."' not supported.\n");
break;
}
}
// Then add the columns to the created tables according to the CSV definition
echo("--------------- Upgrading database complete. ---------------\n");
}
echo("--------------- Done. ---------------\n");
echo("\n");
@ -421,6 +569,38 @@ function compare_table_array(array $nominal, string $nominal_name, array $actual
return($compare_differences);
}
// Generate SQL to create or modify column
function column_sql_definition(string $table_name, array $column) : string {
// These default values will not be in quotes
$mysql_default_values_without_quote = array('current_timestamp()');
if ($column['Null'] == "NO") {
$column['Null'] = "NOT"; // Idiotic...
}
if ($column['Null'] == "YES") {
$column['Null'] = ""; // Also Idiotic...
}
if ($column['Default'] != '') {
if (in_array(strtolower($column['Default']),$mysql_default_values_without_quote)) {
$quote = "";
} else {
$quote = "'";
}
$column['Default'] = "DEFAULT $quote".$column['Default']."$quote";
}
$sql =
"`".$column['Field']."` ".
$column['Type']." ".
$column['Null']." NULL ".
$column['Default'];
return($sql);
}
function info() {
echo("OpenXE database compare\n");
echo("Copyright 2022 (c) OpenXE project\n");
@ -432,6 +612,8 @@ function info() {
echo("\t-e: export database structure to files\n");
echo("\t-c: compare content of files with database structure\n");
echo("\t-i: ignore column definitions\n");
echo("\t-upgrade: upgrade the database to match the CSV definition (risky)\n");
echo("\t-clean: remove items from the database that are not in the CSV definition (risky)\n");
echo("\n");
}