CircleCI: Run golangci-lint in two batches (#23021)

* CircleCI: Run golangci-lint in two batches

Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>

* CircleCI: Fix typo

Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>

* Chore: adds fallback value to time series class

* Chore: changes fallback value from null to empty string in FilterInput component

* Update public/app/core/time_series2.ts

Co-Authored-By: Hugo Häggmark <hugo.haggmark@grafana.com>

* Chore: updates || to ?? operators

Co-authored-by: Lukas Siatka <lukasz.siatka@grafana.com>
Co-authored-by: Hugo Häggmark <hugo.haggmark@grafana.com>

.circleci/config.yml

@@ -734,8 +734,10 @@ jobs:
           name: Lint Go
           command: |
             go vet ./pkg/...
-            # Adjust golangci-lint concurrency since it can run out of memory
-            golangci-lint run -v -j 2 --config scripts/go/configs/.golangci.yml ./pkg/...
+            golangci-lint run -v -j 2 --config scripts/go/configs/ci/.golangci.yml -E deadcode -E gofmt \
+              -E gosimple -E ineffassign -E structcheck -E typecheck ./pkg/...
+            golangci-lint run -v -j 2 --config scripts/go/configs/ci/.golangci.yml -E unconvert -E unused \
+              -E varcheck -E goconst -E errcheck -E staticcheck ./pkg/...
             ./scripts/go/bin/revive -formatter stylish -config ./scripts/go/configs/revive.toml ./pkg/...
             ./scripts/go/bin/revive -formatter stylish ./pkg/services/alerting/...
             ./scripts/go/bin/gosec -quiet -exclude=G104,G107,G108,G201,G202,G204,G301,G304,G401,G402,G501 \

public/app/core/components/FilterInput/FilterInput.tsx

@@ -15,9 +15,9 @@ export const FilterInput = forwardRef<HTMLInputElement, Props>((props, ref) => (
       ref={ref}
       type="text"
       className={props.inputClassName}
-      value={unEscapeStringFromRegex(props.value)}
+      value={props.value ? unEscapeStringFromRegex(props.value) : ''}
       onChange={event => props.onChange(escapeStringForRegex(event.target.value))}
-      placeholder={props.placeholder ? props.placeholder : null}
+      placeholder={props.placeholder ?? ''}
     />
     <i className="gf-form-input-icon fa fa-search" />
   </label>

public/app/core/time_series2.ts

@@ -344,8 +344,8 @@ export default class TimeSeries {
 
   updateLegendValues(formater: ValueFormatter, decimals: DecimalCount, scaledDecimals: DecimalCount) {
     this.valueFormater = formater;
-    this.decimals = decimals;
-    this.scaledDecimals = scaledDecimals;
+    this.decimals = decimals ?? 0;
+    this.scaledDecimals = scaledDecimals ?? 0;
   }
 
   formatValue(value: number) {

scripts/go/configs/ci/.golangci.yml

@@ -0,0 +1,12 @@
+run:
+  timeout: 10m
+
+linters:
+  disable-all: true
+
+linters-settings:
+  goconst:
+    # minimal length of string constant, 3 by default
+    min-len: 5
+    # minimal occurrences count to trigger, 3 by default
+    min-occurrences: 5