Bug 2153 - pretty printer

[controller.git] / opendaylight / md-sal / sal-rest-connector / src / main / java / org / opendaylight / controller / sal / restconf / impl / QueryParametersParser.java

diff --git a/opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/restconf/impl/QueryParametersParser.java b/opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/restconf/impl/QueryParametersParser.java
new file mode 100644 (file)
index 0000000..b567d2a
--- /dev/null
+++ b/opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/restconf/impl/QueryParametersParser.java
@@ -0,0 +1,56 @@
+/**
+ * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.controller.sal.restconf.impl;
+
+import com.google.common.base.Strings;
+import javax.ws.rs.core.UriInfo;
+
+public class QueryParametersParser {
+
+    private enum UriParameters {
+        PRETTY_PRINT("prettyPrint"),
+        DEPTH("depth");
+
+        private String uriParameterName;
+
+        UriParameters(final String uriParameterName) {
+            this.uriParameterName = uriParameterName;
+        }
+
+        @Override
+        public String toString() {
+            return uriParameterName;
+        }
+    }
+
+    public static WriterParameters parseKnownWriterParameters(final UriInfo info) {
+        boolean prettyPrint;
+        int depth;
+        String param = info.getQueryParameters(false).getFirst(UriParameters.DEPTH.toString());
+        if (Strings.isNullOrEmpty(param) || "unbounded".equals(param)) {
+            depth = Integer.MAX_VALUE;
+        } else {
+            try {
+                depth = Integer.valueOf(param);
+                if (depth < 1) {
+                    throw new RestconfDocumentedException(new RestconfError(RestconfError.ErrorType.PROTOCOL, RestconfError.ErrorTag.INVALID_VALUE,
+                            "Invalid depth parameter: " + depth, null,
+                            "The depth parameter must be an integer > 1 or \"unbounded\""));
+                }
+            } catch (final NumberFormatException e) {
+                throw new RestconfDocumentedException(new RestconfError(RestconfError.ErrorType.PROTOCOL, RestconfError.ErrorTag.INVALID_VALUE,
+                        "Invalid depth parameter: " + e.getMessage(), null,
+                        "The depth parameter must be an integer > 1 or \"unbounded\""));
+            }
+        }
+        param = info.getQueryParameters(false).getFirst(UriParameters.PRETTY_PRINT.toString());
+        prettyPrint = "true".equals(param);
+        return new WriterParameters(prettyPrint, depth);
+    }
+
+}