Merge changes Idbdec7b3,I643dadac,I2f54e1d5,I2ead5203

* changes:
  Provide initial a1-pe-sim docs
  Initial code check-in for A1 Policy Enforcement Simulator
  Add basic .gitignore
  Add linters setup

1 files changed, 92 insertions, 0 deletions

diff --git a/src/main/java/org/onap/a1pesimulator/service/ves/RanVesDataProvider.java b/src/main/java/org/onap/a1pesimulator/service/ves/RanVesDataProvider.java
new file mode 100644
index 0000000..95743f3
--- /dev/null
+++ b/src/main/java/org/onap/a1pesimulator/service/ves/RanVesDataProvider.java
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2021 Samsung Electronics
+ * 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
+ */
+
+package org.onap.a1pesimulator.service.ves;
+
+import java.io.IOException;
+import java.net.URL;
+import lombok.Setter;
+import org.onap.a1pesimulator.data.ves.Event;
+import org.onap.a1pesimulator.util.JsonUtils;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.cache.annotation.Cacheable;
+import org.springframework.core.io.Resource;
+import org.springframework.core.io.ResourceLoader;
+import org.springframework.stereotype.Service;
+
+@Service
+public class RanVesDataProvider {
+
+    private static final String PM_VES_LOCATION = "classpath:pmVes.json";
+    private static final String PM_FAILURE_VES_LOCATION = "classpath:failurePmVes.json";
+
+    @Setter
+    private Event pmVesEvent;
+    @Setter
+    private Event failurePmVesEvent;
+    @Setter
+    private Integer interval;
+
+    private final Integer defaultInterval;
+    private final ResourceLoader resourceLoader;
+
+    public RanVesDataProvider(@Value("${ves.defaultInterval}") Integer defaultInterval, ResourceLoader resourceLoader) {
+        this.defaultInterval = defaultInterval;
+        this.resourceLoader = resourceLoader;
+    }
+
+    @Cacheable("pmVes")
+    public Event loadPmVesEvent() {
+        URL resourceUrl = getResourceURL(resourceLoader.getResource(PM_VES_LOCATION));
+        return JsonUtils.INSTANCE.deserializeFromFileUrl(resourceUrl, Event.class);
+    }
+
+    @Cacheable("failurePmVes")
+    public Event loadFailurePmVesEvent() {
+        URL resourceUrl = getResourceURL(resourceLoader.getResource(PM_FAILURE_VES_LOCATION));
+        return JsonUtils.INSTANCE.deserializeFromFileUrl(resourceUrl, Event.class);
+    }
+
+    public Integer getRegularVesInterval() {
+        if (interval == null) {
+            return defaultInterval;
+        }
+        return interval;
+    }
+
+    public Integer getFailureVesInterval() {
+        return defaultInterval;
+    }
+
+    public Event getPmVesEvent() {
+        if (pmVesEvent == null) {
+            return loadPmVesEvent();
+        }
+        return pmVesEvent;
+    }
+
+    public Event getFailurePmVesEvent() {
+        if (failurePmVesEvent == null) {
+            return loadFailurePmVesEvent();
+        }
+        return failurePmVesEvent;
+    }
+
+    private URL getResourceURL(Resource resource) {
+        try {
+            return resource.getURL();
+        } catch (IOException e) {
+            throw new RuntimeException("Cannot get resource URL for: " + resource.getFilename());
+        }
+    }
+}