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f269dc8bfa | ||
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eef9a5f4c8 |
@@ -1,6 +1,6 @@
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{
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{
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"name": "@jorgecuadros/api",
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"name": "@jorgecuadros/api",
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"version": "1.0.9",
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"version": "1.0.10",
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"private": true,
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"private": true,
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"scripts": {
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"scripts": {
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"build": "nest build",
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"build": "nest build",
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@@ -100,11 +100,7 @@ export class ReplicationService {
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return { ...empty, configured: true, problem: `No se pudo conectar: ${msg}` };
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return { ...empty, configured: true, problem: `No se pudo conectar: ${msg}` };
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}
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}
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const field = (name: string): string | null => {
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const field = (name: string): string | null => replicaField(raw, name);
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const m = raw.match(new RegExp(`^\\s*${name}:\\s*(.*)$`, "m"));
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const v = m?.[1]?.trim();
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return v === undefined || v === "" ? null : v;
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};
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// An empty result set means the server is not configured as a replica at
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// An empty result set means the server is not configured as a replica at
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// all — distinct from "configured but broken", and worth saying plainly.
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// all — distinct from "configured but broken", and worth saying plainly.
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@@ -151,3 +147,25 @@ export class ReplicationService {
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};
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};
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}
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}
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}
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}
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/**
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* Read one field out of `SHOW REPLICA STATUS\G` output.
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*
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* Exported for testing, and worth testing: the obvious regex is wrong.
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* `\s` matches newlines in JavaScript, so `^\s*NAME:\s*(.*)$` lets the `\s*`
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* after the colon swallow the line break of an EMPTY field and capture the
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* following line instead. Last_SQL_Error is empty on a healthy replica, so that
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* version reported the next line ("Replicate_Ignore_Server_Ids:") as a SQL
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* error and rendered a perfectly healthy replica as broken.
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*
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* Hence `[^\S\n]` — horizontal whitespace only — on both sides of the name.
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*
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* @returns the trimmed value, or null when the field is absent OR empty. Empty
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* and absent mean the same thing to every caller here: MySQL prints
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* error fields as blank rather than omitting them.
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*/
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export function replicaField(raw: string, name: string): string | null {
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const m = raw.match(new RegExp(`^[^\\S\\n]*${name}:[^\\S\\n]*(.*)$`, "m"));
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const v = m?.[1]?.trim();
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return v === undefined || v === "" ? null : v;
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}
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@@ -0,0 +1,87 @@
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import { replicaField } from "./replication.service";
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/**
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* Verbatim shape of `SHOW REPLICA STATUS\G` from the live replica, trimmed to
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* the fields the panel reads plus the neighbours that matter.
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*
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* The empty `Last_SQL_Error:` immediately followed by
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* `Replicate_Ignore_Server_Ids:` is the whole point of the fixture — that exact
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* adjacency is what the first implementation misread.
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*/
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const HEALTHY = [
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"*************************** 1. row ***************************",
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" Replica_IO_State: Waiting for source to send event",
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" Source_Host: 100.103.77.46",
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" Source_User: repl",
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" Replica_IO_Running: Yes",
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" Replica_SQL_Running: Yes",
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" Replicate_Do_DB: ",
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" Last_Errno: 0",
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" Last_Error: ",
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" Seconds_Behind_Source: 0",
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" Last_IO_Errno: 0",
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" Last_IO_Error: ",
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" Last_SQL_Errno: 0",
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" Last_SQL_Error: ",
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" Replicate_Ignore_Server_Ids: ",
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" Source_Server_Id: 1",
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].join("\n");
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const BROKEN = [
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" Replica_IO_Running: Yes",
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" Replica_SQL_Running: No",
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" Seconds_Behind_Source: NULL",
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" Last_IO_Error: ",
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" Last_SQL_Error: Could not execute Write_rows event on table jorgecuadros.customers",
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" Replicate_Ignore_Server_Ids: ",
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].join("\n");
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describe("replicaField", () => {
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it("reads plain values", () => {
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expect(replicaField(HEALTHY, "Replica_IO_Running")).toBe("Yes");
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expect(replicaField(HEALTHY, "Replica_SQL_Running")).toBe("Yes");
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expect(replicaField(HEALTHY, "Source_Host")).toBe("100.103.77.46");
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expect(replicaField(HEALTHY, "Seconds_Behind_Source")).toBe("0");
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});
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/**
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* The regression this file exists for. `\s` matches newlines in JavaScript,
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* so `^\s*NAME:\s*(.*)$` walks past an empty field's line break and captures
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* the NEXT line — turning a healthy replica into
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* "Error SQL: Replicate_Ignore_Server_Ids:" in the admin panel.
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*/
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it("returns null for an empty field instead of the following line", () => {
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expect(replicaField(HEALTHY, "Last_SQL_Error")).toBeNull();
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expect(replicaField(HEALTHY, "Last_IO_Error")).toBeNull();
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expect(replicaField(HEALTHY, "Last_Error")).toBeNull();
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expect(replicaField(HEALTHY, "Replicate_Do_DB")).toBeNull();
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expect(replicaField(HEALTHY, "Replicate_Ignore_Server_Ids")).toBeNull();
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});
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it("still reads a real error when there is one", () => {
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expect(replicaField(BROKEN, "Last_SQL_Error")).toBe(
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"Could not execute Write_rows event on table jorgecuadros.customers",
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);
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expect(replicaField(BROKEN, "Replica_SQL_Running")).toBe("No");
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});
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/** NULL is a distinct state from empty and must survive as the literal. */
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it("preserves the literal NULL that MySQL prints for unknown lag", () => {
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expect(replicaField(BROKEN, "Seconds_Behind_Source")).toBe("NULL");
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});
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it("returns null for a field that is not present at all", () => {
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expect(replicaField(HEALTHY, "Nonexistent_Field")).toBeNull();
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});
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/**
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* Field names are matched at the start of a line. Without the line anchor,
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* "Last_Error" would also match inside "Last_SQL_Error" and read the wrong
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* value — the two carry different things and both feed the panel.
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*/
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it("does not match a field name that is a suffix of another", () => {
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const raw = " Last_SQL_Error: boom\n Last_Error: ";
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expect(replicaField(raw, "Last_Error")).toBeNull();
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expect(replicaField(raw, "Last_SQL_Error")).toBe("boom");
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});
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});
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@@ -1,6 +1,6 @@
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{
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{
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"name": "@jorgecuadros/web",
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"name": "@jorgecuadros/web",
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"version": "1.0.9",
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"version": "1.0.10",
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"private": true,
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"private": true,
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"scripts": {
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"scripts": {
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"dev": "next dev -p 4500",
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"dev": "next dev -p 4500",
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+1
-1
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{
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{
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"name": "jorgecuadros-platform",
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"name": "jorgecuadros-platform",
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"version": "1.0.9",
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"version": "1.0.10",
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"private": true,
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"private": true,
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"workspaces": [
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"workspaces": [
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"apps/*",
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"apps/*",
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@@ -1,6 +1,6 @@
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{
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{
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"name": "@jorgecuadros/database",
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"name": "@jorgecuadros/database",
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"version": "1.0.9",
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"version": "1.0.10",
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"private": true,
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"private": true,
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"main": "generated/client/index.js",
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"main": "generated/client/index.js",
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"types": "generated/client/index.d.ts",
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"types": "generated/client/index.d.ts",
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