Correlations: Create paginated API (#65241)

* Add pagination params and apply to sql

* Create getCorrelationsResponse that returns metadata

* Set up pagination, change correlations fetch to only get source datasource correlations

* Move correlations from root to pane, only fetch correlations for one datasource when initialized or datasource is changed

* Fix tests

* Fix remaining tests

* Use functional component to handle state

* Remove unneeded mocks, fix tests

* Change perPage to limit

* Fix Go Tests

* Fix linter

* Remove parameter

* Account for mixed datasources

* Delete unused hook

* add source UID filter to API, start backing out front end hook changes

* add source IDs to API, use when loading or changing datasource

* Fix prettier

* Mock correlations response

* Get correlations for all datasources in mixed scenario

* Add documentation for new parameters

* Attempt to fix swagger

* Fix correlations page

* add swagger and openapi docs

* Add mocks to failing test

* Change API for consistency, remove extra hooks and unused function

* Add max to limit and re-gen api docs

* Move the page to the previous page if deleting all the rows on the page

* Only fetch if remove does not have value

* Change page to a reference hook

* Fix documentation, a test and some logic thinking page could be 0

pkg/services/correlations/models.go

@@ -73,11 +73,11 @@ type CorrelationConfig struct {
 	Type CorrelationConfigType `json:"type" binding:"Required"`
 	// Target data query
 	// required:true
-	// example: { "expr": "job=app" }
+	// example: {"prop1":"value1","prop2":"value"}
 	Target map[string]interface{} `json:"target" binding:"Required"`
 	// Source data transformations
 	// required:false
-	// example: [{"type": "logfmt"}]
+	// example: [{"type":"logfmt"}]
 	Transformations Transformations `json:"transformations,omitempty"`
 }
 
@@ -107,10 +107,10 @@ type Correlation struct {
 	// example: 50xhMlg9k
 	UID string `json:"uid" xorm:"pk 'uid'"`
 	// UID of the data source the correlation originates from
-	// example:d0oxYRg4z
+	// example: d0oxYRg4z
 	SourceUID string `json:"sourceUID" xorm:"pk 'source_uid'"`
 	// UID of the data source the correlation points to
-	// example:PE1C5CBDA0504A6A3
+	// example: PE1C5CBDA0504A6A3
 	TargetUID *string `json:"targetUID" xorm:"target_uid"`
 	// Label identifying the correlation
 	// example: My Label
@@ -122,6 +122,13 @@ type Correlation struct {
 	Config CorrelationConfig `json:"config" xorm:"jsonb config"`
 }
 
+type GetCorrelationsResponseBody struct {
+	Correlations []Correlation `json:"correlations"`
+	TotalCount   int64         `json:"totalCount"`
+	Page         int64         `json:"page"`
+	Limit        int64         `json:"limit"`
+}
+
 // CreateCorrelationResponse is the response struct for CreateCorrelationCommand
 // swagger:model
 type CreateCorrelationResponseBody struct {
@@ -138,7 +145,7 @@ type CreateCorrelationCommand struct {
 	OrgId             int64  `json:"-"`
 	SkipReadOnlyCheck bool   `json:"-"`
 	// Target data source UID to which the correlation is created. required if config.type = query
-	// example:PE1C5CBDA0504A6A3
+	// example: PE1C5CBDA0504A6A3
 	TargetUID *string `json:"targetUID"`
 	// Optional label identifying the correlation
 	// example: My label
@@ -193,7 +200,7 @@ type CorrelationConfigUpdateDTO struct {
 	// Target type
 	Type *CorrelationConfigType `json:"type"`
 	// Target data query
-	// example: { "expr": "job=app" }
+	// example: {"prop1":"value1","prop2":"value"}
 	Target *map[string]interface{} `json:"target"`
 	// Source data transformations
 	// example: [{"type": "logfmt"},{"type":"regex","expression":"(Superman|Batman)", "variable":"name"}]
@@ -260,6 +267,21 @@ type GetCorrelationsBySourceUIDQuery struct {
 // GetCorrelationsQuery is the query to retrieve all correlations
 type GetCorrelationsQuery struct {
 	OrgId int64 `json:"-"`
+	// Limit the maximum number of correlations to return per page
+	// in:query
+	// required:false
+	// default:100
+	Limit int64 `json:"limit"`
+	// Page index for starting fetching correlations
+	// in:query
+	// required:false
+	// default:1
+	Page int64 `json:"page"`
+
+	// Source datasource UID filter to be applied to correlations
+	// in:query
+	// required:false
+	SourceUIDs []string `json:"sourceuid"`
 }
 
 type DeleteCorrelationsBySourceUIDCommand struct {