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Force replica if failed using normal

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alternates now
This commit is contained in:
Ajay
2022-07-22 19:03:46 -04:00
parent 071aae5cf7
commit ad7080d801
2 changed files with 11 additions and 3 deletions
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13
src/databases/Postgres.ts
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@@ -103,11 +103,13 @@ export class Postgres implements IDatabase {
Logger.debug(`prepare (postgres): type: ${type}, query: ${query}, params: ${params}`);
let tries = 0;
let lastPool: Pool = null;
do {
tries++;
try {
const queryResult = await this.getPool(type, options).query({ text: query, values: params });
lastPool = this.getPool(type, options);
const queryResult = await lastPool.query({ text: query, values: params });
switch (type) {
case "get": {
@@ -125,7 +127,12 @@ export class Postgres implements IDatabase {
}
}
} catch (err) {
options.useReplica = false;
if (lastPool === this.pool) {
// Only applies if it is get or all request
options.forceReplica = true;
} else if (lastPool === this.poolRead) {
options.useReplica = false;
}
Logger.error(`prepare (postgres) try ${tries}: ${err}`);
}
@@ -136,7 +143,7 @@ export class Postgres implements IDatabase {
const readAvailable = this.poolRead && options.useReplica && (type === "get" || type === "all");
const ignroreReadDueToFailure = this.lastPoolReadFail > Date.now() - 1000 * 30;
const readDueToFailure = this.lastPoolFail > Date.now() - 1000 * 30;
if (readAvailable && !ignroreReadDueToFailure && (readDueToFailure ||
if (readAvailable && !ignroreReadDueToFailure && (options.forceReplica || readDueToFailure ||
Math.random() > 1 / (this.config.postgresReadOnly.weight + 1))) {
return this.poolRead;
} else {