Fix the op policy payload

[clamp.git] / src / main / java / org / onap / clamp / policy / operational / LegacyOperationalPolicy.java

diff --git a/src/main/java/org/onap/clamp/policy/operational/LegacyOperationalPolicy.java b/src/main/java/org/onap/clamp/policy/operational/LegacyOperationalPolicy.java
new file mode 100644 (file)
index 0000000..33148f0
--- /dev/null
+++ b/src/main/java/org/onap/clamp/policy/operational/LegacyOperationalPolicy.java
@@ -0,0 +1,150 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP CLAMP
+ * ================================================================================
+ * Copyright (C) 2019 AT&T Intellectual Property. All rights
+ *                             reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END============================================
+ * ===================================================================
+ *
+ */
+
+package org.onap.clamp.policy.operational;
+
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonElement;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.TreeMap;
+
+import org.apache.commons.lang3.math.NumberUtils;
+import org.yaml.snakeyaml.DumperOptions;
+import org.yaml.snakeyaml.DumperOptions.ScalarStyle;
+import org.yaml.snakeyaml.Yaml;
+
+/**
+ *
+ * This class contains the code required to support the sending of Legacy
+ * operational payload to policy engine. This will probably disappear in El
+ * Alto.
+ *
+ */
+public class LegacyOperationalPolicy {
+
+    private LegacyOperationalPolicy() {
+
+    }
+
+    private static void translateStringValues(String jsonKey, String stringValue, JsonElement parentJsonElement) {
+        if (stringValue.equalsIgnoreCase("true") || stringValue.equalsIgnoreCase("false")) {
+            parentJsonElement.getAsJsonObject().addProperty(jsonKey, Boolean.valueOf(stringValue));
+
+        } else if (NumberUtils.isParsable(stringValue)) {
+            parentJsonElement.getAsJsonObject().addProperty(jsonKey, Long.parseLong(stringValue));
+        }
+    }
+
+    private static JsonElement removeAllQuotes(JsonElement jsonElement) {
+        if (jsonElement.isJsonArray()) {
+            for (JsonElement element : jsonElement.getAsJsonArray()) {
+                removeAllQuotes(element);
+            }
+        } else if (jsonElement.isJsonObject()) {
+            for (Entry<String, JsonElement> entry : jsonElement.getAsJsonObject().entrySet()) {
+                if (entry.getValue().isJsonPrimitive() && entry.getValue().getAsJsonPrimitive().isString()) {
+                    translateStringValues(entry.getKey(), entry.getValue().getAsString(), jsonElement);
+                } else {
+                    removeAllQuotes(entry.getValue());
+                }
+            }
+        }
+        return jsonElement;
+    }
+
+    public static JsonElement reworkPayloadAttributes(JsonElement policyJson) {
+        for (JsonElement policy : policyJson.getAsJsonObject().get("policies").getAsJsonArray()) {
+            JsonElement payloadElem = policy.getAsJsonObject().get("payload");
+            String payloadString = payloadElem != null ? payloadElem.getAsString() : "";
+            if (!payloadString.isEmpty()) {
+                Map<String, String> testMap = new Yaml().load(payloadString);
+                String json = new GsonBuilder().create().toJson(testMap);
+                policy.getAsJsonObject().add("payload", new GsonBuilder().create().fromJson(json, JsonElement.class));
+            }
+        }
+        return policyJson;
+    }
+
+    private static void replacePropertiesIfEmpty(JsonElement policy, String key, String valueIfEmpty) {
+        JsonElement payloadElem = policy.getAsJsonObject().get(key);
+        String payloadString = payloadElem != null ? payloadElem.getAsString() : "";
+        if (payloadString.isEmpty()) {
+            policy.getAsJsonObject().addProperty(key, valueIfEmpty);
+        }
+    }
+
+    private static JsonElement fulfillPoliciesTreeField(JsonElement policyJson) {
+        for (JsonElement policy : policyJson.getAsJsonObject().get("policies").getAsJsonArray()) {
+            replacePropertiesIfEmpty(policy, "success", "final_success");
+            replacePropertiesIfEmpty(policy, "failure", "final_failure");
+            replacePropertiesIfEmpty(policy, "failure_timeout", "final_failure_timeout");
+            replacePropertiesIfEmpty(policy, "failure_retries", "final_failure_retries");
+            replacePropertiesIfEmpty(policy, "failure_exception", "final_failure_exception");
+            replacePropertiesIfEmpty(policy, "failure_guard", "final_failure_guard");
+        }
+        return policyJson;
+    }
+
+    private static Map<String, Object> createMap(JsonElement jsonElement) {
+        Map<String, Object> mapResult = new TreeMap<>();
+
+        if (jsonElement.isJsonObject()) {
+            for (Entry<String, JsonElement> entry : jsonElement.getAsJsonObject().entrySet()) {
+                if (entry.getValue().isJsonPrimitive() && entry.getValue().getAsJsonPrimitive().isString()) {
+                    mapResult.put(entry.getKey(), entry.getValue().getAsString());
+                } else if (entry.getValue().isJsonPrimitive() && entry.getValue().getAsJsonPrimitive().isBoolean()) {
+                    mapResult.put(entry.getKey(), entry.getValue().getAsBoolean());
+                } else if (entry.getValue().isJsonPrimitive() && entry.getValue().getAsJsonPrimitive().isNumber()) {
+                    // Only int ro long normally, we don't need float here
+                    mapResult.put(entry.getKey(), entry.getValue().getAsLong());
+                } else if (entry.getValue().isJsonArray()) {
+                    List<Map<String, Object>> newArray = new ArrayList<>();
+                    mapResult.put(entry.getKey(), newArray);
+                    for (JsonElement element : entry.getValue().getAsJsonArray()) {
+                        newArray.add(createMap(element));
+                    }
+                } else if (entry.getValue().isJsonObject()) {
+                    mapResult.put(entry.getKey(), createMap(entry.getValue()));
+                }
+            }
+        }
+        return mapResult;
+    }
+
+    public static String createPolicyPayloadYamlLegacy(JsonElement operationalPolicyJsonElement) {
+        JsonElement opPolicy = fulfillPoliciesTreeField(
+            removeAllQuotes(reworkPayloadAttributes(operationalPolicyJsonElement.getAsJsonObject().deepCopy())));
+        Map<?, ?> jsonMap = createMap(opPolicy);
+        DumperOptions options = new DumperOptions();
+        options.setDefaultScalarStyle(ScalarStyle.PLAIN);
+        options.setIndent(2);
+        options.setPrettyFlow(true);
+        // Policy can't support { } in the yaml
+        options.setDefaultFlowStyle(DumperOptions.FlowStyle.BLOCK);
+        return (new Yaml(options)).dump(jsonMap);
+    }
+}