added role awareness

Author: kvahed

src/main/java/com/arangodb/ArangoDB.java

@@ -31,6 +31,7 @@
 import javax.net.ssl.SSLContext;
 
 import com.arangodb.entity.ArangoDBVersion;
+import com.arangodb.entity.ArangoDBRole;
 import com.arangodb.entity.LogEntity;
 import com.arangodb.entity.LogLevelEntity;
 import com.arangodb.entity.UserEntity;
@@ -453,6 +454,18 @@ public ArangoDBVersion getVersion() throws ArangoDBException {
 		return db().getVersion();
 	}
 
+	/**
+	 * Returns the server role.
+	 * 
+	 * @see <a href="https://docs.arangodb.com/current/HTTP/MiscellaneousFunctions/index.html#return-server-version">API
+	 *      Documentation</a>
+	 * @return the server role
+	 * @throws ArangoDBException
+	 */
+	public ArangoDBRole getRole() throws ArangoDBException {
+		return db().getRole();
+	}
+
 	/**
 	 * Create a new user. This user will not have access to any database. You need permission to the _system database in
 	 * order to execute this call.

src/main/java/com/arangodb/ArangoDatabase.java

@@ -27,6 +27,7 @@
 import com.arangodb.entity.AqlFunctionEntity;
 import com.arangodb.entity.AqlParseEntity;
 import com.arangodb.entity.ArangoDBVersion;
+import com.arangodb.entity.ArangoDBRole;
 import com.arangodb.entity.CollectionEntity;
 import com.arangodb.entity.CursorEntity;
 import com.arangodb.entity.DatabaseEntity;
@@ -87,6 +88,18 @@ public ArangoDBVersion getVersion() throws ArangoDBException {
 		return executor.execute(getVersionRequest(), ArangoDBVersion.class);
 	}
 
+	/**
+	 * Returns the server name and version number.
+	 * 
+	 * @see <a href="https://docs.arangodb.com/current/HTTP/MiscellaneousFunctions/index.html#return-server-version">API
+	 *      Documentation</a>
+	 * @return the server version, number
+	 * @throws ArangoDBException
+	 */
+	public ArangoDBRole getRole() throws ArangoDBException {
+		return executor.execute(getRoleRequest(), ArangoDBRole.class);
+	}
+
 	/**
 	 * Retrieves a list of all databases the current user can access
 	 * 

src/main/java/com/arangodb/internal/ArangoDBConstants.java

@@ -61,6 +61,7 @@ public class ArangoDBConstants {
 	public static final String PATH_API_ADMIN_LOG_LEVEL = "/_admin/log/level";
 	public static final String PATH_API_ADMIN_ROUTING_RELOAD = "/_admin/routing/reload";
 	public static final String PATH_API_IMPORT = "/_api/import";
+  public static final String PATH_API_ROLE = "_admin/server/role";
 
 	public static final String ENCRYPTION_PLAIN = "plain";
 

src/main/java/com/arangodb/internal/InternalArangoDatabase.java

@@ -92,6 +92,10 @@ protected Request getVersionRequest() {
 		return new Request(name, RequestType.GET, ArangoDBConstants.PATH_API_VERSION);
 	}
 
+	protected Request getRoleRequest() {
+		return new Request(name, RequestType.GET, ArangoDBConstants.PATH_API_ROLE);
+	}
+
 	protected Request createCollectionRequest(final String name, final CollectionCreateOptions options) {
 		return new Request(name(), RequestType.POST, ArangoDBConstants.PATH_API_COLLECTION).setBody(
 			executor.serialize(OptionsBuilder.build(options != null ? options : new CollectionCreateOptions(), name)));

src/test/java/com/arangodb/ArangoDatabaseTest.java

@@ -49,6 +49,7 @@
 import com.arangodb.entity.AqlParseEntity;
 import com.arangodb.entity.AqlParseEntity.AstNode;
 import com.arangodb.entity.ArangoDBVersion;
+import com.arangodb.entity.ArangoDBRole;
 import com.arangodb.entity.BaseDocument;
 import com.arangodb.entity.BaseEdgeDocument;
 import com.arangodb.entity.CollectionEntity;
@@ -124,6 +125,9 @@ public void deleteCollection() {
 
 	@Test
 	public void deleteSystemCollection() {
+    if (db.getRole().getRole() == "COORDINATOR") {
+      return;
+    }
 		final String name = "_system_test";
 		db.createCollection(name, new CollectionCreateOptions().isSystem(true));
 		db.collection(name).drop(true);
@@ -136,6 +140,9 @@ public void deleteSystemCollection() {
 
 	@Test
 	public void deleteSystemCollectionFail() {
+    if (db.getRole().getRole() == "COORDINATOR") {
+      return;
+    }
 		final String name = "_system_test";
 		db.createCollection(name, new CollectionCreateOptions().isSystem(true));
 		try {