Alerting: Add compatibility between prometheus and ruler identifiers (#92496)

* Unify Prom and Ruler rules hash creation

* Add tests, refarct prom hash

public/app/features/alerting/unified/hooks/useCombinedRuleNamespaces.ts

@@ -31,6 +31,7 @@ import {
   isCloudRulesSource,
   isGrafanaRulesSource,
 } from '../utils/datasource';
+import { hashQuery } from '../utils/rule-id';
 import {
   isAlertingRule,
   isAlertingRulerRule,
@@ -452,18 +453,6 @@ function isCombinedRuleEqualToPromRule(combinedRule: CombinedRule, rule: Rule, c
   return false;
 }
 
-// there can be slight differences in how prom & ruler render a query, this will hash them accounting for the differences
-function hashQuery(query: string) {
-  // one of them might be wrapped in parens
-  if (query.length > 1 && query[0] === '(' && query[query.length - 1] === ')') {
-    query = query.slice(1, -1);
-  }
-  // whitespace could be added or removed
-  query = query.replace(/\s|\n/g, '');
-  // labels matchers can be reordered, so sort the enitre string, esentially comparing just the character counts
-  return query.split('').sort().join('');
-}
-
 /*
   This hook returns combined Grafana rules. Optionally, it can filter rules by dashboard UID and panel ID.
 */

public/app/features/alerting/unified/utils/__snapshots__/rule-id.test.ts.snap

@@ -1,5 +1,5 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`hashRulerRule should hash alerting rule 1`] = `"1465866290"`;
+exports[`hashRulerRule should hash alerting rule 1`] = `"7317348"`;
 
-exports[`hashRulerRule should hash recording rules 1`] = `"2044193757"`;
+exports[`hashRulerRule should hash recording rules 1`] = `"-447747460"`;

public/app/features/alerting/unified/utils/rule-id.test.ts

@@ -1,15 +1,50 @@
 import { renderHook } from '@testing-library/react-hooks';
 
-import { RuleIdentifier } from 'app/types/unified-alerting';
+import { AlertingRule, RecordingRule, RuleIdentifier } from 'app/types/unified-alerting';
 import {
   GrafanaAlertStateDecision,
   GrafanaRuleDefinition,
+  PromAlertingRuleState,
+  PromRuleType,
   RulerAlertingRuleDTO,
   RulerGrafanaRuleDTO,
   RulerRecordingRuleDTO,
 } from 'app/types/unified-alerting-dto';
 
-import { hashRulerRule, parse, stringifyIdentifier, getRuleIdFromPathname } from './rule-id';
+import { hashRulerRule, parse, stringifyIdentifier, getRuleIdFromPathname, hashRule, equal } from './rule-id';
+
+const alertingRule = {
+  prom: {
+    name: 'cpu-over-90',
+    query: 'cpu_usage_seconds_total{job="integrations/node_exporter"} > 90',
+    labels: { type: 'cpu' },
+    annotations: { description: 'CPU usage too high' },
+    state: PromAlertingRuleState.Firing,
+    type: PromRuleType.Alerting,
+    health: 'ok',
+  } satisfies AlertingRule,
+  ruler: {
+    alert: 'cpu-over-90',
+    expr: 'cpu_usage_seconds_total{job="integrations/node_exporter"} > 90',
+    labels: { type: 'cpu' },
+    annotations: { description: 'CPU usage too high' },
+  } satisfies RulerAlertingRuleDTO,
+};
+
+const recordingRule = {
+  prom: {
+    name: 'instance:node_num_cpu:sum',
+    type: PromRuleType.Recording,
+    health: 'ok',
+    query: 'count without (mode) (node_cpu_seconds_total{job="integrations/node_exporter"})',
+    labels: { type: 'cpu' },
+  } satisfies RecordingRule,
+  ruler: {
+    record: 'instance:node_num_cpu:sum',
+    expr: 'count without (mode) (node_cpu_seconds_total{job="integrations/node_exporter"})',
+    labels: { type: 'cpu' },
+  } satisfies RulerRecordingRuleDTO,
+};
 
 describe('hashRulerRule', () => {
   it('should not hash unknown rule types', () => {
@@ -18,8 +53,9 @@ describe('hashRulerRule', () => {
     expect(() => {
       // @ts-ignore
       hashRulerRule(unknownRule);
-    }).toThrowError();
+    }).toThrow('Only recording and alerting ruler rules can be hashed');
   });
+
   it('should hash recording rules', () => {
     const recordingRule: RulerRecordingRuleDTO = {
       record: 'instance:node_num_cpu:sum',
@@ -117,6 +153,48 @@ describe('hashRulerRule', () => {
   });
 });
 
+describe('hashRule', () => {
+  it('should produce hashRulerRule compatible hashes for alerting rules', () => {
+    const promHash = hashRule(alertingRule.prom);
+    const rulerHash = hashRulerRule(alertingRule.ruler);
+
+    expect(promHash).toBe(rulerHash);
+  });
+
+  it('should produce hashRulerRule compatible hashes for recording rules', () => {
+    const promHash = hashRule(recordingRule.prom);
+    const rulerHash = hashRulerRule(recordingRule.ruler);
+
+    expect(promHash).toBe(rulerHash);
+  });
+});
+
+describe('equal', () => {
+  it('should return true for Prom and cloud identifiers with the same name, type, query and labels', () => {
+    const promIdentifier: RuleIdentifier = {
+      ruleSourceName: 'mimir-cloud',
+      namespace: 'cloud-alerts',
+      groupName: 'cpu-usage',
+      ruleName: alertingRule.prom.name,
+      ruleHash: hashRule(alertingRule.prom),
+    };
+
+    const cloudIdentifier: RuleIdentifier = {
+      ruleSourceName: 'mimir-cloud',
+      namespace: 'cloud-alerts',
+      groupName: 'cpu-usage',
+      ruleName: alertingRule.ruler.alert,
+      ruleHash: hashRulerRule(alertingRule.ruler),
+    };
+
+    const promToCloud = equal(promIdentifier, cloudIdentifier);
+    const cloudToProm = equal(cloudIdentifier, promIdentifier);
+
+    expect(promToCloud).toBe(true);
+    expect(cloudToProm).toBe(true);
+  });
+});
+
 describe('useRuleIdFromPathname', () => {
   it('should return undefined when there is no id in params', () => {
     const { result } = renderHook(() => {

public/app/features/alerting/unified/utils/rule-id.ts

@@ -10,7 +10,7 @@ import {
   RuleIdentifier,
   RuleWithLocation,
 } from 'app/types/unified-alerting';
-import { Annotations, Labels, RulerRuleDTO } from 'app/types/unified-alerting-dto';
+import { Annotations, Labels, PromRuleType, RulerRuleDTO } from 'app/types/unified-alerting-dto';
 
 import { GRAFANA_RULES_SOURCE_NAME } from './datasource';
 import {
@@ -104,6 +104,28 @@ export function equal(a: RuleIdentifier, b: RuleIdentifier) {
     );
   }
 
+  // It might happen to compare Cloud and Prometheus identifiers for datasources with available Ruler API
+  // It happends when the Ruler API timeouts and the UI cannot create Cloud identifiers, so it creates a Prometheus identifier instead.
+  if (isCloudRuleIdentifier(a) && isPrometheusRuleIdentifier(b)) {
+    return (
+      a.groupName === b.groupName &&
+      a.namespace === b.namespace &&
+      a.ruleName === b.ruleName &&
+      a.rulerRuleHash === b.ruleHash &&
+      a.ruleSourceName === b.ruleSourceName
+    );
+  }
+
+  if (isPrometheusRuleIdentifier(a) && isCloudRuleIdentifier(b)) {
+    return (
+      a.groupName === b.groupName &&
+      a.namespace === b.namespace &&
+      a.ruleName === b.ruleName &&
+      a.ruleHash === b.rulerRuleHash &&
+      a.ruleSourceName === b.ruleSourceName
+    );
+  }
+
   return false;
 }
 
@@ -219,41 +241,61 @@ function hash(value: string): number {
 
 // this is used to identify rules, mimir / loki rules do not have a unique identifier
 export function hashRulerRule(rule: RulerRuleDTO): string {
+  if (isGrafanaRulerRule(rule)) {
+    return rule.grafana_alert.uid;
+  }
+
+  const fingerprint = getRulerRuleFingerprint(rule);
+  return hash(JSON.stringify(fingerprint)).toString();
+}
+
+function getRulerRuleFingerprint(rule: RulerRuleDTO) {
   if (isRecordingRulerRule(rule)) {
-    return hash(JSON.stringify([rule.record, rule.expr, hashLabelsOrAnnotations(rule.labels)])).toString();
-  } else if (isAlertingRulerRule(rule)) {
-    return hash(
-      JSON.stringify([
+    return [rule.record, PromRuleType.Recording, hashQuery(rule.expr), hashLabelsOrAnnotations(rule.labels)];
+  }
+  if (isAlertingRulerRule(rule)) {
+    return [
       rule.alert,
-        rule.expr,
+      PromRuleType.Alerting,
+      hashQuery(rule.expr),
       hashLabelsOrAnnotations(rule.annotations),
       hashLabelsOrAnnotations(rule.labels),
-      ])
-    ).toString();
-  } else if (isGrafanaRulerRule(rule)) {
-    return rule.grafana_alert.uid;
-  } else {
-    throw new Error('only recording and alerting ruler rules can be hashed');
+    ];
   }
+  throw new Error('Only recording and alerting ruler rules can be hashed');
 }
 
 export function hashRule(rule: Rule): string {
+  const fingerprint = getPromRuleFingerprint(rule);
+  return hash(JSON.stringify(fingerprint)).toString();
+}
+
+function getPromRuleFingerprint(rule: Rule) {
   if (isRecordingRule(rule)) {
-    return hash(JSON.stringify([rule.type, rule.query, hashLabelsOrAnnotations(rule.labels)])).toString();
+    return [rule.name, PromRuleType.Recording, hashQuery(rule.query), hashLabelsOrAnnotations(rule.labels)];
   }
-
   if (isAlertingRule(rule)) {
-    return hash(
-      JSON.stringify([
-        rule.type,
-        rule.query,
+    return [
+      rule.name,
+      PromRuleType.Alerting,
+      hashQuery(rule.query),
       hashLabelsOrAnnotations(rule.annotations),
       hashLabelsOrAnnotations(rule.labels),
-      ])
-    ).toString();
+    ];
   }
+  throw new Error('Only recording and alerting rules can be hashed');
+}
 
-  throw new Error('only recording and alerting rules can be hashed');
+// there can be slight differences in how prom & ruler render a query, this will hash them accounting for the differences
+export function hashQuery(query: string) {
+  // one of them might be wrapped in parens
+  if (query.length > 1 && query[0] === '(' && query[query.length - 1] === ')') {
+    query = query.slice(1, -1);
+  }
+  // whitespace could be added or removed
+  query = query.replace(/\s|\n/g, '');
+  // labels matchers can be reordered, so sort the enitre string, esentially comparing just the character counts
+  return query.split('').sort().join('');
 }
 
 export function hashLabelsOrAnnotations(item: Labels | Annotations | undefined): string {