[Security Solution] Apply field aliases to all legacy indices, not just <= version 45 (#125888)

* Apply field aliases to all legacy indices, not just <= version 45

* Update unit tests

x-pack/plugins/security_solution/server/lib/detection_engine/routes/index/__snapshots__/get_signals_template.test.ts.snap

@@ -3,7 +3,7 @@
 exports[`get_signals_template backwards compatibility mappings for version 45 should match snapshot 1`] = `
 Object {
   "_meta": Object {
-    "aliases_version": 2,
+    "aliases_version": 3,
     "version": 45,
   },
   "properties": Object {
@@ -533,9 +533,522 @@ Object {
 exports[`get_signals_template backwards compatibility mappings for version 57 should match snapshot 1`] = `
 Object {
   "_meta": Object {
-    "aliases_version": 2,
+    "aliases_version": 3,
     "version": 57,
   },
+  "properties": Object {
+    "kibana.alert.ancestors.depth": Object {
+      "path": "signal.ancestors.depth",
+      "type": "alias",
+    },
+    "kibana.alert.ancestors.id": Object {
+      "path": "signal.ancestors.id",
+      "type": "alias",
+    },
+    "kibana.alert.ancestors.index": Object {
+      "path": "signal.ancestors.index",
+      "type": "alias",
+    },
+    "kibana.alert.ancestors.type": Object {
+      "path": "signal.ancestors.type",
+      "type": "alias",
+    },
+    "kibana.alert.building_block_type": Object {
+      "path": "signal.rule.building_block_type",
+      "type": "alias",
+    },
+    "kibana.alert.depth": Object {
+      "path": "signal.depth",
+      "type": "alias",
+    },
+    "kibana.alert.group.id": Object {
+      "path": "signal.group.id",
+      "type": "alias",
+    },
+    "kibana.alert.group.index": Object {
+      "path": "signal.group.index",
+      "type": "alias",
+    },
+    "kibana.alert.original_event.action": Object {
+      "path": "signal.original_event.action",
+      "type": "alias",
+    },
+    "kibana.alert.original_event.category": Object {
+      "path": "signal.original_event.category",
+      "type": "alias",
+    },
+    "kibana.alert.original_event.code": Object {
+      "path": "signal.original_event.code",
+      "type": "alias",
+    },
+    "kibana.alert.original_event.created": Object {
+      "path": "signal.original_event.created",
+      "type": "alias",
+    },
+    "kibana.alert.original_event.dataset": Object {
+      "path": "signal.original_event.dataset",
+      "type": "alias",
+    },
+    "kibana.alert.original_event.duration": Object {
+      "path": "signal.original_event.duration",
+      "type": "alias",
+    },
+    "kibana.alert.original_event.end": Object {
+      "path": "signal.original_event.end",
+      "type": "alias",
+    },
+    "kibana.alert.original_event.hash": Object {
+      "path": "signal.original_event.hash",
+      "type": "alias",
+    },
+    "kibana.alert.original_event.id": Object {
+      "path": "signal.original_event.id",
+      "type": "alias",
+    },
+    "kibana.alert.original_event.kind": Object {
+      "path": "signal.original_event.kind",
+      "type": "alias",
+    },
+    "kibana.alert.original_event.module": Object {
+      "path": "signal.original_event.module",
+      "type": "alias",
+    },
+    "kibana.alert.original_event.outcome": Object {
+      "path": "signal.original_event.outcome",
+      "type": "alias",
+    },
+    "kibana.alert.original_event.provider": Object {
+      "path": "signal.original_event.provider",
+      "type": "alias",
+    },
+    "kibana.alert.original_event.reason": Object {
+      "path": "signal.original_event.reason",
+      "type": "alias",
+    },
+    "kibana.alert.original_event.risk_score": Object {
+      "path": "signal.original_event.risk_score",
+      "type": "alias",
+    },
+    "kibana.alert.original_event.risk_score_norm": Object {
+      "path": "signal.original_event.risk_score_norm",
+      "type": "alias",
+    },
+    "kibana.alert.original_event.sequence": Object {
+      "path": "signal.original_event.sequence",
+      "type": "alias",
+    },
+    "kibana.alert.original_event.severity": Object {
+      "path": "signal.original_event.severity",
+      "type": "alias",
+    },
+    "kibana.alert.original_event.start": Object {
+      "path": "signal.original_event.start",
+      "type": "alias",
+    },
+    "kibana.alert.original_event.timezone": Object {
+      "path": "signal.original_event.timezone",
+      "type": "alias",
+    },
+    "kibana.alert.original_event.type": Object {
+      "path": "signal.original_event.type",
+      "type": "alias",
+    },
+    "kibana.alert.original_time": Object {
+      "path": "signal.original_time",
+      "type": "alias",
+    },
+    "kibana.alert.reason": Object {
+      "path": "signal.reason",
+      "type": "alias",
+    },
+    "kibana.alert.risk_score": Object {
+      "path": "signal.rule.risk_score",
+      "type": "alias",
+    },
+    "kibana.alert.rule.author": Object {
+      "path": "signal.rule.author",
+      "type": "alias",
+    },
+    "kibana.alert.rule.created_at": Object {
+      "path": "signal.rule.created_at",
+      "type": "alias",
+    },
+    "kibana.alert.rule.created_by": Object {
+      "path": "signal.rule.created_by",
+      "type": "alias",
+    },
+    "kibana.alert.rule.description": Object {
+      "path": "signal.rule.description",
+      "type": "alias",
+    },
+    "kibana.alert.rule.enabled": Object {
+      "path": "signal.rule.enabled",
+      "type": "alias",
+    },
+    "kibana.alert.rule.false_positives": Object {
+      "path": "signal.rule.false_positives",
+      "type": "alias",
+    },
+    "kibana.alert.rule.from": Object {
+      "path": "signal.rule.from",
+      "type": "alias",
+    },
+    "kibana.alert.rule.immutable": Object {
+      "path": "signal.rule.immutable",
+      "type": "alias",
+    },
+    "kibana.alert.rule.interval": Object {
+      "path": "signal.rule.interval",
+      "type": "alias",
+    },
+    "kibana.alert.rule.license": Object {
+      "path": "signal.rule.license",
+      "type": "alias",
+    },
+    "kibana.alert.rule.max_signals": Object {
+      "path": "signal.rule.max_signals",
+      "type": "alias",
+    },
+    "kibana.alert.rule.name": Object {
+      "path": "signal.rule.name",
+      "type": "alias",
+    },
+    "kibana.alert.rule.note": Object {
+      "path": "signal.rule.note",
+      "type": "alias",
+    },
+    "kibana.alert.rule.references": Object {
+      "path": "signal.rule.references",
+      "type": "alias",
+    },
+    "kibana.alert.rule.rule_id": Object {
+      "path": "signal.rule.rule_id",
+      "type": "alias",
+    },
+    "kibana.alert.rule.rule_name_override": Object {
+      "path": "signal.rule.rule_name_override",
+      "type": "alias",
+    },
+    "kibana.alert.rule.tags": Object {
+      "path": "signal.rule.tags",
+      "type": "alias",
+    },
+    "kibana.alert.rule.threat.framework": Object {
+      "path": "signal.rule.threat.framework",
+      "type": "alias",
+    },
+    "kibana.alert.rule.threat.tactic.id": Object {
+      "path": "signal.rule.threat.tactic.id",
+      "type": "alias",
+    },
+    "kibana.alert.rule.threat.tactic.name": Object {
+      "path": "signal.rule.threat.tactic.name",
+      "type": "alias",
+    },
+    "kibana.alert.rule.threat.tactic.reference": Object {
+      "path": "signal.rule.threat.tactic.reference",
+      "type": "alias",
+    },
+    "kibana.alert.rule.threat.technique.id": Object {
+      "path": "signal.rule.threat.technique.id",
+      "type": "alias",
+    },
+    "kibana.alert.rule.threat.technique.name": Object {
+      "path": "signal.rule.threat.technique.name",
+      "type": "alias",
+    },
+    "kibana.alert.rule.threat.technique.reference": Object {
+      "path": "signal.rule.threat.technique.reference",
+      "type": "alias",
+    },
+    "kibana.alert.rule.threat.technique.subtechnique.id": Object {
+      "path": "signal.rule.threat.technique.subtechnique.id",
+      "type": "alias",
+    },
+    "kibana.alert.rule.threat.technique.subtechnique.name": Object {
+      "path": "signal.rule.threat.technique.subtechnique.name",
+      "type": "alias",
+    },
+    "kibana.alert.rule.threat.technique.subtechnique.reference": Object {
+      "path": "signal.rule.threat.technique.subtechnique.reference",
+      "type": "alias",
+    },
+    "kibana.alert.rule.timeline_id": Object {
+      "path": "signal.rule.timeline_id",
+      "type": "alias",
+    },
+    "kibana.alert.rule.timeline_title": Object {
+      "path": "signal.rule.timeline_title",
+      "type": "alias",
+    },
+    "kibana.alert.rule.timestamp_override": Object {
+      "path": "signal.rule.timestamp_override",
+      "type": "alias",
+    },
+    "kibana.alert.rule.to": Object {
+      "path": "signal.rule.to",
+      "type": "alias",
+    },
+    "kibana.alert.rule.type": Object {
+      "path": "signal.rule.type",
+      "type": "alias",
+    },
+    "kibana.alert.rule.updated_at": Object {
+      "path": "signal.rule.updated_at",
+      "type": "alias",
+    },
+    "kibana.alert.rule.updated_by": Object {
+      "path": "signal.rule.updated_by",
+      "type": "alias",
+    },
+    "kibana.alert.rule.uuid": Object {
+      "path": "signal.rule.id",
+      "type": "alias",
+    },
+    "kibana.alert.rule.version": Object {
+      "path": "signal.rule.version",
+      "type": "alias",
+    },
+    "kibana.alert.severity": Object {
+      "path": "signal.rule.severity",
+      "type": "alias",
+    },
+    "kibana.alert.threshold_result.cardinality.field": Object {
+      "path": "signal.threshold_result.cardinality.field",
+      "type": "alias",
+    },
+    "kibana.alert.threshold_result.cardinality.value": Object {
+      "path": "signal.threshold_result.cardinality.value",
+      "type": "alias",
+    },
+    "kibana.alert.threshold_result.count": Object {
+      "path": "signal.threshold_result.count",
+      "type": "alias",
+    },
+    "kibana.alert.threshold_result.from": Object {
+      "path": "signal.threshold_result.from",
+      "type": "alias",
+    },
+    "kibana.alert.threshold_result.terms.field": Object {
+      "path": "signal.threshold_result.terms.field",
+      "type": "alias",
+    },
+    "kibana.alert.threshold_result.terms.value": Object {
+      "path": "signal.threshold_result.terms.value",
+      "type": "alias",
+    },
+    "kibana.alert.workflow_status": Object {
+      "path": "signal.status",
+      "type": "alias",
+    },
+    "signal": Object {
+      "properties": Object {
+        "_meta": Object {
+          "properties": Object {
+            "version": Object {
+              "type": "long",
+            },
+          },
+          "type": "object",
+        },
+        "ancestors": Object {
+          "properties": Object {
+            "depth": Object {
+              "type": "long",
+            },
+            "id": Object {
+              "type": "keyword",
+            },
+            "index": Object {
+              "type": "keyword",
+            },
+            "rule": Object {
+              "type": "keyword",
+            },
+            "type": Object {
+              "type": "keyword",
+            },
+          },
+        },
+        "depth": Object {
+          "type": "integer",
+        },
+        "group": Object {
+          "properties": Object {
+            "id": Object {
+              "type": "keyword",
+            },
+            "index": Object {
+              "type": "integer",
+            },
+          },
+          "type": "object",
+        },
+        "original_event": Object {
+          "properties": Object {
+            "reason": Object {
+              "type": "keyword",
+            },
+          },
+          "type": "object",
+        },
+        "reason": Object {
+          "type": "keyword",
+        },
+        "rule": Object {
+          "properties": Object {
+            "author": Object {
+              "type": "keyword",
+            },
+            "building_block_type": Object {
+              "type": "keyword",
+            },
+            "license": Object {
+              "type": "keyword",
+            },
+            "note": Object {
+              "type": "text",
+            },
+            "risk_score_mapping": Object {
+              "properties": Object {
+                "field": Object {
+                  "type": "keyword",
+                },
+                "operator": Object {
+                  "type": "keyword",
+                },
+                "value": Object {
+                  "type": "keyword",
+                },
+              },
+              "type": "object",
+            },
+            "rule_name_override": Object {
+              "type": "keyword",
+            },
+            "severity_mapping": Object {
+              "properties": Object {
+                "field": Object {
+                  "type": "keyword",
+                },
+                "operator": Object {
+                  "type": "keyword",
+                },
+                "severity": Object {
+                  "type": "keyword",
+                },
+                "value": Object {
+                  "type": "keyword",
+                },
+              },
+              "type": "object",
+            },
+            "threat": Object {
+              "properties": Object {
+                "technique": Object {
+                  "properties": Object {
+                    "subtechnique": Object {
+                      "properties": Object {
+                        "id": Object {
+                          "type": "keyword",
+                        },
+                        "name": Object {
+                          "type": "keyword",
+                        },
+                        "reference": Object {
+                          "type": "keyword",
+                        },
+                      },
+                      "type": "object",
+                    },
+                  },
+                  "type": "object",
+                },
+              },
+              "type": "object",
+            },
+            "threat_index": Object {
+              "type": "keyword",
+            },
+            "threat_indicator_path": Object {
+              "type": "keyword",
+            },
+            "threat_language": Object {
+              "type": "keyword",
+            },
+            "threat_mapping": Object {
+              "properties": Object {
+                "entries": Object {
+                  "properties": Object {
+                    "field": Object {
+                      "type": "keyword",
+                    },
+                    "type": Object {
+                      "type": "keyword",
+                    },
+                    "value": Object {
+                      "type": "keyword",
+                    },
+                  },
+                  "type": "object",
+                },
+              },
+              "type": "object",
+            },
+            "threat_query": Object {
+              "type": "keyword",
+            },
+            "threshold": Object {
+              "properties": Object {
+                "field": Object {
+                  "type": "keyword",
+                },
+                "value": Object {
+                  "type": "float",
+                },
+              },
+              "type": "object",
+            },
+            "timestamp_override": Object {
+              "type": "keyword",
+            },
+          },
+          "type": "object",
+        },
+        "threshold_result": Object {
+          "properties": Object {
+            "cardinality": Object {
+              "properties": Object {
+                "field": Object {
+                  "type": "keyword",
+                },
+                "value": Object {
+                  "type": "long",
+                },
+              },
+            },
+            "count": Object {
+              "type": "long",
+            },
+            "from": Object {
+              "type": "date",
+            },
+            "terms": Object {
+              "properties": Object {
+                "field": Object {
+                  "type": "keyword",
+                },
+                "value": Object {
+                  "type": "keyword",
+                },
+              },
+            },
+          },
+        },
+      },
+      "type": "object",
+    },
+  },
 }
 `;
 
@@ -552,7 +1065,7 @@ Object {
     },
     "mappings": Object {
       "_meta": Object {
-        "aliases_version": 2,
+        "aliases_version": 3,
         "version": 67,
       },
       "dynamic": false,

x-pack/plugins/security_solution/server/lib/detection_engine/routes/index/create_index_route.ts

@@ -145,6 +145,10 @@ const addFieldAliasesToIndices = async ({
   const indicesByVersion: Record<number, string[]> = {};
   const versions: Set<number> = new Set();
   for (const [indexName, mapping] of Object.entries(indexMappings)) {
+    // The `version` tells us which set of backwards compatibility mappings to apply: `version` never changes
+    // and represents what was actually shipped. `aliases_version` tells us if the most up to date backwards
+    // compatibility mappings have already been applied to the index. `aliases_version` DOES get updated when we apply
+    // new compatibility mappings like runtime fields and aliases.
     const version: number = get(mapping.mappings?._meta, 'version') ?? 0;
     const aliasesVersion: number = get(mapping.mappings?._meta, ALIAS_VERSION_FIELD) ?? 0;
     // Only attempt to add backwards compatibility mappings to indices whose names start with the alias

x-pack/plugins/security_solution/server/lib/detection_engine/routes/index/get_signals_template.ts

@@ -47,7 +47,7 @@ export const SIGNALS_TEMPLATE_VERSION = 67;
   UI will call create_index_route and and go through the index update process. Increment this number if
   making changes to the field aliases we use to make signals forwards-compatible.
 */
-export const SIGNALS_FIELD_ALIASES_VERSION = 2;
+export const SIGNALS_FIELD_ALIASES_VERSION = 3;
 
 /**
   @constant
@@ -154,7 +154,6 @@ export const backwardsCompatibilityMappings = [
           },
         },
       },
-      properties,
     },
   },
 ];
@@ -171,7 +170,7 @@ export const createBackwardsCompatibilityMapping = (version: number) => {
     },
   };
 
-  return merge({}, ...mappings, meta);
+  return merge({ properties }, ...mappings, meta);
 };
 
 export const getRbacRequiredFields = (spaceId: string) => {