feat(server side): add OSM geo data importer

ServerSide/resourceserver/pom.xml

@@ -80,6 +80,12 @@
 
     <dependencies>
 
+        <dependency>
+            <groupId>com.squareup.okhttp</groupId>
+            <artifactId>okhttp</artifactId>
+            <version>2.7.5</version>
+        </dependency>
+
         <dependency>
             <groupId>ru.servers</groupId>
             <artifactId>protocol</artifactId>

ServerSide/resourceserver/src/main/java/ru.servers.resourceserver/geodata/GEOImporter.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2018 Vladimir Balun
+ *
+ * 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
+ * limita
+ */
+
+package ru.servers.resourceserver.geodata;
+
+import ru.servers.resourceserver.network.HTTPException;
+
+import java.io.IOException;
+
+public interface GEOImporter {
+    /**
+     *  latWest - latitudeWest
+     *  lonSouth - longitudeSouth
+     *  latEast - latitudeEast
+     *  lonNorth - longitudeNorth
+     */
+    String importGeoData(double latWest, double lonSouth, double latEast, double lonNorth) throws HTTPException, IOException;
+
+}

ServerSide/resourceserver/src/main/java/ru.servers.resourceserver/geodata/OSMImporter.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright 2018 Vladimir Balun
+ *
+ * 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
+ * limita
+ */
+
+package ru.servers.resourceserver.geodata;
+import com.squareup.okhttp.OkHttpClient;
+import com.squareup.okhttp.Request;
+import com.squareup.okhttp.Response;
+import lombok.extern.log4j.Log4j;
+import ru.servers.resourceserver.network.HTTPException;
+import ru.servers.resourceserver.network.HTTPStatusCode;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Properties;
+
+@Log4j
+public class OSMImporter implements GEOImporter {
+
+    private static String serverAddress;
+    private static String downloadGeoDataURL;
+
+    public OSMImporter () throws IOException{
+        try (InputStream inputStream = getClass().getResourceAsStream("/osm.properties")) {
+            Properties properties = new Properties();
+            properties.load(inputStream);
+            serverAddress = properties.getProperty("osm.serverAddress");
+            downloadGeoDataURL = properties.getProperty("osm.url.downloadGeoData ");
+        } catch (IOException e) {
+            throw new IOException("File with OSM server properties was not read.");
+        }
+    }
+
+    /**
+     * latWest - latitudeWest
+     * lonSouth - longitudeSouth
+     * latEast - latitudeEast
+     * lonNorth - longitudeNorth
+     */
+    @Override
+    public String importGeoData(double latWest, double lonSouth, double latEast, double lonNorth) throws HTTPException {
+        try {
+            OkHttpClient client = new OkHttpClient();
+            Request request = new Request.Builder().url(composeURL(latWest, lonSouth, latEast, lonNorth)).build();
+            Response response = client.newCall(request).execute();
+            if (response.code() == HTTPStatusCode.OK) {
+                return response.body().string();
+            } else if (response.code() == HTTPStatusCode.BAD_REQUEST) {
+                throw new HTTPException("Incorrect request to OSM server.");
+            } else {
+                throw new HTTPException("Inner OSM server error.");
+            }
+        } catch (IOException e) {
+            throw new HTTPException(e.getMessage());
+        }
+    }
+
+    private String composeURL(double latWest, double lonSouth, double latEast, double lonNorth) {
+        return serverAddress + downloadGeoDataURL + latWest + "," + lonSouth + "," + latEast + "," + lonNorth;
+    }
+
+}

ServerSide/resourceserver/src/main/java/ru.servers.resourceserver/network/HTTPException.java

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2018 Vladimir Balun
+ *
+ * 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
+ * limita
+ */
+
+package ru.servers.resourceserver.network;
+
+public class HTTPException extends Exception {
+
+    public HTTPException(String message) {
+        super(message);
+    }
+
+    public String getMessage(){
+        return super.getMessage();
+    }
+
+}

ServerSide/resourceserver/src/main/java/ru.servers.resourceserver/network/HTTPStatusCode.java

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2018 Vladimir Balun
+ *
+ * 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
+ * limita
+ */
+
+package ru.servers.resourceserver.network;
+
+public class HTTPStatusCode {
+
+    public static final short OK = 200;
+    public static final short BAD_REQUEST = 400;
+
+}

ServerSide/resourceserver/src/main/resources/osm.properties

@@ -0,0 +1,4 @@
+# Server API properties
+
+osm.serverAddress = http://www.openstreetmap.org
+osm.url.downloadGeoData = /api/0.6/map?bbox=