Merge pull request #43 from banzaicloud/pdb-diff

PDB selector diff fix

Author: waynz0r

.circleci/config.yml

@@ -3,7 +3,7 @@ version: 2
 integration-test-environment: &integration-test-environment
   GO_VERSION: "1.15.2"
   KUBECONFIG: /home/circleci/.kube/config
-  MINIKUBE_VERSION: v1.13.1
+  MINIKUBE_VERSION: v1.22.0
   MINIKUBE_WANTUPDATENOTIFICATION: false
   MINIKUBE_WANTREPORTERRORPROMPT: false
   MINIKUBE_HOME: /home/circleci
@@ -38,7 +38,7 @@ integration-test-base: &integration-test-base
     - run:
         name: Setup kubectl
         command: |
-          curl -Lo kubectl https://storage.googleapis.com/kubernetes-release/release/${K8S_VERSION}/bin/linux/amd64/kubectl && chmod +x kubectl && sudo mv kubectl /usr/local/bin/
+          curl -Lo kubectl "https://dl.k8s.io/release/${K8S_VERSION}/bin/linux/amd64/kubectl" && chmod +x kubectl && sudo mv kubectl /usr/local/bin/
           mkdir -p ${HOME}/.kube
           touch ${HOME}/.kube/config
 
@@ -145,80 +145,53 @@ jobs:
           name: Run verification
           command: make
 
-  integration-test-k8s1-19:
-    <<: *integration-test-base
-    environment:
-      <<: *integration-test-environment
-      K8S_VERSION: v1.19.2
-
-  integration-test-k8s1-18:
-    <<: *integration-test-base
-    environment:
-      <<: *integration-test-environment
-      K8S_VERSION: v1.18.9
-
-  integration-test-k8s1-17:
-    <<: *integration-test-base
-    environment:
-      <<: *integration-test-environment
-      K8S_VERSION: v1.17.12
-
-  integration-test-k8s1-16:
+  integration-test-k8s1-21:
     <<: *integration-test-base
     environment:
       <<: *integration-test-environment
-      K8S_VERSION: v1.16.15
+      K8S_VERSION: v1.21.3
 
-  integration-test-k8s1-15:
+  integration-test-k8s1-20:
     <<: *integration-test-base
     environment:
       <<: *integration-test-environment
-      K8S_VERSION: v1.15.7
+      K8S_VERSION: v1.20.9
 
-  integration-test-k8s1-14:
-    <<: *integration-test-base
-    environment:
-      <<: *integration-test-environment
-      K8S_VERSION: v1.14.2
-
-  integration-test-k8s1-13:
+  integration-test-k8s1-19:
     <<: *integration-test-base
     environment:
       <<: *integration-test-environment
-      K8S_VERSION: v1.13.6
+      K8S_VERSION: v1.19.2
 
-  integration-test-k8s1-12:
+  integration-test-k8s1-18:
     <<: *integration-test-base
     environment:
       <<: *integration-test-environment
-      K8S_VERSION: v1.12.9
+      K8S_VERSION: v1.18.9
 
-  integration-test-k8s1-11:
+  integration-test-k8s1-17:
     <<: *integration-test-base
     environment:
       <<: *integration-test-environment
-      K8S_VERSION: v1.11.9
+      K8S_VERSION: v1.17.12
 
 workflows:
   version: 2
   ci:
     jobs:
       - check
-      - integration-test-k8s1-19:
+      - integration-test-k8s1-21:
           requires:
             - check
-      - integration-test-k8s1-18:
+      - integration-test-k8s1-20:
           requires:
             - check
-      - integration-test-k8s1-17:
-          requires:
-            - check
-      - integration-test-k8s1-16:
+      - integration-test-k8s1-19:
           requires:
             - check
-      - integration-test-k8s1-15:
+      - integration-test-k8s1-18:
           requires:
             - check
-      - integration-test-k8s1-14:
+      - integration-test-k8s1-17:
           requires:
             - check

Makefile

@@ -1,4 +1,4 @@
-LICENSEI_VERSION = 0.3.1
+LICENSEI_VERSION = 0.4.0
 GOLANGCI_VERSION = 1.16.0
 
 all: license fmt vet test

README.md

@@ -58,6 +58,39 @@ if !patchResult.IsEmpty() {
 
 ```
 
+### CalculateOptions
+
+In certain cases there is a need to filter out certain fields when the patch generated by the library is false positive.
+To help in these scenarios there are the following options to be used when calculating diffs:
+- `IgnoreStatusFields`
+- `IgnoreVolumeClaimTemplateTypeMetaAndStatus`
+- `IgnorePDBSelector`
+
+Example:
+```
+	opts := []patch.CalculateOption{
+		patch.IgnoreStatusFields(),
+	}
+	
+	patchResult, err := patch.DefaultPatchMaker.Calculate(existing.(runtime.Object), newObject.(runtime.Object), opts...)
+	if err != nil {
+		return err
+	}
+```
+
+#### IgnoreStatusFields
+
+This CalculateOptions removes status fields from both objects before comparing.
+
+#### IgnoreVolumeClaimTemplateTypeMetaAndStatus
+
+This CalculateOption clears volumeClaimTemplate fields from both objects before comparing (applies to statefulsets).
+
+#### IgnorePdbSelector
+
+Checks `selector` fields of PDB objects before comparing and removes them if they match. `reflect.DeepEquals` is used for the equality check. 
+This is required because map fields using `patchStrategy:"replace"` will always diff regardless if they are otherwise equal.
+
 ## Contributing
 
 If you find this project useful here's how you can help:

go.mod

@@ -1,10 +1,9 @@
 module github.com/banzaicloud/k8s-objectmatcher
 
-go 1.13
+go 1.15
 
 require (
 	emperror.dev/errors v0.8.0
-	github.com/json-iterator/go v1.1.10
-	k8s.io/api v0.19.2
+	github.com/json-iterator/go v1.1.11
 	k8s.io/apimachinery v0.19.2
 )