dennii/dbgate
1
0
Fork 0
mirror of https://github.com/DeNNiiInc/dbgate.git synced 2026-04-18 04:26:01 +00:00
Code Issues Packages Projects Releases Wiki Activity

postgresql analyse optyimalization #273

Browse Source
This commit is contained in:
Jan Prochazka
2022-06-02 10:57:53 +02:00
parent a6f6680788
commit ca3f1d720d
8 changed files with 157 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

72
plugins/dbgate-plugin-postgres/src/backend/Analyser.js
View File

@@ -61,8 +61,68 @@ class Analyser extends DatabaseAnalyser {
const columns = await this.driver.query(this.pool, this.createQuery('columns', ['tables', 'views']));
this.feedback({ analysingMessage: 'Loading primary keys' });
const pkColumns = await this.driver.query(this.pool, this.createQuery('primaryKeys', ['tables']));
this.feedback({ analysingMessage: 'Loading foreign keys' });
const fkColumns = await this.driver.query(this.pool, this.createQuery('foreignKeys', ['tables']));
let fkColumns = null;
// if (true) {
if (this.containsObjectIdCondition(['tables']) || this.driver.__analyserInternals.refTableCond) {
this.feedback({ analysingMessage: 'Loading foreign keys' });
fkColumns = await this.driver.query(this.pool, this.createQuery('foreignKeys', ['tables']));
} else {
this.feedback({ analysingMessage: 'Loading foreign key constraints' });
const fk_tableConstraints = await this.driver.query(
this.pool,
this.createQuery('fk_tableConstraints', ['tables'])
);
this.feedback({ analysingMessage: 'Loading foreign key refs' });
const fk_referentialConstraints = await this.driver.query(
this.pool,
this.createQuery('fk_referentialConstraints', ['tables'])
);
this.feedback({ analysingMessage: 'Loading foreign key columns' });
const fk_keyColumnUsage = await this.driver.query(this.pool, this.createQuery('fk_keyColumnUsage', ['tables']));
const cntKey = x => `${x.constraint_name}|${x.constraint_schema}`;
const rows = [];
const constraintDct = _.keyBy(fk_tableConstraints.rows, cntKey);
for (const fkRef of fk_referentialConstraints.rows) {
const cntBase = constraintDct[cntKey(fkRef)];
const cntRef = constraintDct[`${fkRef.unique_constraint_name}|${fkRef.unique_constraint_schema}`];
if (!cntBase || !cntRef) continue;
const baseCols = _.sortBy(
fk_keyColumnUsage.rows.filter(
x => x.table_name == cntBase.table_name && x.constraint_name == cntBase.constraint_name
),
'ordinal_position'
);
const refCols = _.sortBy(
fk_keyColumnUsage.rows.filter(
x => x.table_name == cntRef.table_name && x.constraint_name == cntRef.constraint_name
),
'ordinal_position'
);
if (baseCols.length != refCols.length) continue;
for (let i = 0; i < baseCols.length; i++) {
const baseCol = baseCols[i];
const refCol = refCols[i];
rows.push({
...fkRef,
pure_name: cntBase.table_name,
schema_name: cntBase.table_schema,
ref_table_name: cntRef.table_name,
ref_schema_name: cntRef.table_schema,
column_name: baseCol.column_name,
ref_column_name: refCol.column_name,
});
}
}
fkColumns = { rows };
}
this.feedback({ analysingMessage: 'Loading views' });
const views = await this.driver.query(this.pool, this.createQuery('views', ['views']));
this.feedback({ analysingMessage: 'Loading materialized views' });
@@ -85,9 +145,9 @@ class Analyser extends DatabaseAnalyser {
: await this.driver.query(this.pool, this.createQuery('indexcols', ['tables']));
this.feedback({ analysingMessage: 'Loading unique names' });
const uniqueNames = await this.driver.query(this.pool, this.createQuery('uniqueNames', ['tables']));
this.feedback({ analysingMessage: null });
this.feedback({ analysingMessage: 'Finalizing DB structure' });
return {
const res = {
tables: tables.rows.map(table => {
const newTable = {
pureName: table.pure_name,
@@ -207,6 +267,10 @@ class Analyser extends DatabaseAnalyser {
contentHash: func.hash_code,
})),
};
this.feedback({ analysingMessage: null });
return res;
}
async _getFastSnapshot() {