Soutbound PM Rest Client

[oam/nf-oam-adopter.git] / ves-nf-oam-adopter / ves-nf-oam-adopter-pm-sb-rest-client / src / main / java / org / o / ran / oam / nf / oam / adopter / pm / sb / rest / client / http / DownloadPerformanceManagementFilesHandler.java

diff --git a/ves-nf-oam-adopter/ves-nf-oam-adopter-pm-sb-rest-client/src/main/java/org/o/ran/oam/nf/oam/adopter/pm/sb/rest/client/http/DownloadPerformanceManagementFilesHandler.java b/ves-nf-oam-adopter/ves-nf-oam-adopter-pm-sb-rest-client/src/main/java/org/o/ran/oam/nf/oam/adopter/pm/sb/rest/client/http/DownloadPerformanceManagementFilesHandler.java
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+++ b/ves-nf-oam-adopter/ves-nf-oam-adopter-pm-sb-rest-client/src/main/java/org/o/ran/oam/nf/oam/adopter/pm/sb/rest/client/http/DownloadPerformanceManagementFilesHandler.java
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+/*
+ *  ============LICENSE_START=======================================================
+ *  O-RAN-SC
+ *  ================================================================================
+ *  Copyright © 2021 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.o.ran.oam.nf.oam.adopter.pm.sb.rest.client.http;
+
+import io.reactivex.rxjava3.core.Single;
+import java.io.ByteArrayInputStream;
+import java.util.zip.ZipInputStream;
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
+import org.apache.hc.client5.http.async.methods.SimpleBody;
+import org.apache.hc.client5.http.async.methods.SimpleHttpResponse;
+import org.apache.hc.core5.http.ContentType;
+import org.apache.hc.core5.http.HttpStatus;
+import org.apache.hc.core5.http.message.StatusLine;
+import org.o.ran.oam.nf.oam.adopter.pm.rest.manager.exceptions.PerformanceManagementException;
+import org.o.ran.oam.nf.oam.adopter.pm.rest.manager.pojos.Adapter;
+import org.o.ran.oam.nf.oam.adopter.pm.sb.rest.client.DefaultHttpRestClient;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
+public final class DownloadPerformanceManagementFilesHandler {
+
+    private static final Logger LOG = LoggerFactory.getLogger(DownloadPerformanceManagementFilesHandler.class);
+
+    /**
+     * Reads and return ZIP CSV PM Files from device.
+     */
+    public static Single<ZipInputStream> readPerformanceManagementFiles(final DefaultHttpRestClient httpSession,
+            final String pmFilesEndpoint, final Adapter adapter) {
+        LOG.info("Download PM files from RAN {}", adapter.getHostIpAddress());
+        return httpSession.get(adapter, pmFilesEndpoint)
+                       .flatMap(response -> DownloadPerformanceManagementFilesHandler
+                                                    .validateGetZipFile(adapter, response))
+                       .map(entity -> new ZipInputStream(new ByteArrayInputStream(entity.getBodyBytes())));
+    }
+
+    private static Single<SimpleBody> validateGetZipFile(final Adapter adapter, final SimpleHttpResponse response) {
+        final String statusLine = new StatusLine(response).toString();
+        final ContentType contentType = response.getContentType();
+        final SimpleBody entity = response.getBody();
+        if (response.getCode() == HttpStatus.SC_OK && entity != null) {
+            if (ContentType.APPLICATION_OCTET_STREAM.getMimeType().equals(contentType.getMimeType())) {
+                return Single.just(entity);
+            }
+        }
+        return Single.error(new PerformanceManagementException(
+                "Download files from " + adapter.getHostIpAddress() + " failed: " + statusLine));
+    }
+}