[SLICEANALYSIS] Enhance BandwidthEvaluator to listen on user's bandwidth threshold

Put bandwidth evaluation into seperated evaluationStrategy; minor enhance to bandwidth evalution and adjustment; adding ratelimiter for each network function calling.

Issue-ID: DCAEGEN2-3239
Issue-ID: DCAEGEN2-3195
Signed-off-by: decheng zhang <decheng.zhang@huawei.com>
Change-Id: Id5e64fea0a03b0b41054840911ea6a7336956415
Signed-off-by: decheng zhang <decheng.zhang@huawei.com>

1 files changed, 60 insertions, 0 deletions

diff --git a/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/ccvpn/StrategyFactory.java b/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/ccvpn/StrategyFactory.java
new file mode 100644
index 00000000..824731fc
--- /dev/null
+++ b/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/ccvpn/StrategyFactory.java
@@ -0,0 +1,60 @@
+/*******************************************************************************
+ *  ============LICENSE_START=======================================================
+ *  slice-analysis-ms
+ *  ================================================================================
+ *   Copyright (C) 2022 Huawei Canada Limited.
+ *  ==============================================================================
+ *     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.slice.analysis.ms.service.ccvpn;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import javax.annotation.Resource;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+@Service
+public class StrategyFactory {
+    private static Logger log = LoggerFactory.getLogger(StrategyFactory.class);
+
+    @Autowired
+    List<EvaluationStrategy> strategies;
+
+    private StrategyFactory() {}
+
+    /**
+     * Get evulation strategy by name
+     * @param name evaluationStrategy name
+     * @return EvaluationStrategy
+     */
+    public EvaluationStrategy getStrategy(String name){
+        if (null == name || name.isEmpty()){
+            log.error("Empty strategy name provided in config file");
+            throw new IllegalArgumentException("Unknown strategy name: " + name);
+        }
+        for(EvaluationStrategy s: strategies){
+            if(s.getName().equals(name)){
+                return s;
+            }
+        }
+        log.error("Unknown strategy name: {}", name);
+        throw new IllegalArgumentException("Unknown strategy name: " + name);
+    }
+}