Regexp on MP RestClient @path

Signed-off-by: Miguel Serra <[email protected]>

ext/microprofile/mp-rest-client/src/main/java/org/glassfish/jersey/microprofile/restclient/InterfaceUtil.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2020 Oracle and/or its affiliates. All rights reserved.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v. 2.0, which is available at
@@ -59,6 +59,44 @@ static List<String> parseParameters(String template) {
         return allMatches;
     }
 
+    /**
+     * Parses all required parameters from expr string.
+     * Parameters encapsulated by {} or parameters with regexp expressions like {param: (regex_here)}
+     *
+     * @param expr string expression
+     * @return path params
+     */
+    static List<String> getAllMatchingParams(String expr) {
+        List<String> allMatches = new ArrayList<>();
+        if (expr == null || expr.isEmpty() || expr.indexOf('{') == -1) {
+            return allMatches;
+        }
+
+        boolean matching = false;
+        int parenthesisMatched = 0;
+        StringBuilder matchingParameter = new StringBuilder();
+        for (int i = 0; i < expr.length(); i++) {
+            char x = expr.charAt(i);
+
+            if (!matching && x == '{' && parenthesisMatched == 0) {
+                matching = true;
+            } else if (matching && x != ':' && x != '}') {
+                matchingParameter.append(x);
+            } else if (matching) {
+                allMatches.add(matchingParameter.toString());
+                matchingParameter.setLength(0);
+                matching = false;
+            }
+
+            if (x == '}') {
+                parenthesisMatched--;
+            } else if (x == '{') {
+                parenthesisMatched++;
+            }
+        }
+        return allMatches;
+    }
+
     /**
      * Validates and returns proper compute method defined in {@link ClientHeaderParam}.
      *

ext/microprofile/mp-rest-client/src/main/java/org/glassfish/jersey/microprofile/restclient/MethodModel.java

@@ -1,6 +1,6 @@
 /*
- * Copyright (c) 2019 Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2019 Payara Foundation and/or its affiliates. All rights reserved.
+ * Copyright (c) 2020 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2020 Payara Foundation and/or its affiliates. All rights reserved.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v. 2.0, which is available at
@@ -655,7 +655,7 @@ MethodModel build() {
 
         private void validateParameters() {
             UriBuilder uriBuilder = UriBuilder.fromUri(interfaceModel.getPath()).path(pathValue);
-            List<String> parameters = InterfaceUtil.parseParameters(uriBuilder.toTemplate());
+            List<String> parameters = InterfaceUtil.getAllMatchingParams(uriBuilder.toTemplate());
             List<String> methodPathParameters = new ArrayList<>();
             List<ParamModel> pathHandlingParams = parameterModels.stream()
                     .filter(parameterModel -> parameterModel.handles(PathParam.class))

tests/integration/microprofile/rest-client/src/test/java/org/glassfish/jersey/microprofile/restclient/InterfaceUtilTest.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2020 Oracle and/or its affiliates. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0, which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * This Source Code may also be made available under the following Secondary
+ * Licenses when the conditions for such availability set forth in the
+ * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
+ * version 2 with the GNU Classpath Exception, which is available at
+ * https://www.gnu.org/software/classpath/license.html.
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
+ */
+
+package org.glassfish.jersey.microprofile.restclient;
+
+import java.util.Arrays;
+
+import org.testng.annotations.Test;
+
+import static org.testng.Assert.assertEquals;
+
+public class InterfaceUtilTest {
+
+    @Test
+    public void testGetAllParams() {
+        assertEquals(InterfaceUtil.getAllMatchingParams(
+            "{abc}/{xyzId: [0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}}"),
+            Arrays.asList("abc", "xyzId"));
+        assertEquals(InterfaceUtil.getAllMatchingParams(
+            "{xyzId: [a-zA-Z]+}/{abc}"), Arrays.asList("xyzId", "abc"));
+    }
+}

tests/integration/microprofile/rest-client/src/test/java/org/glassfish/jersey/restclient/ApplicationResource.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2020 Oracle and/or its affiliates. All rights reserved.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v. 2.0, which is available at
@@ -26,6 +26,7 @@
 import javax.ws.rs.POST;
 import javax.ws.rs.PUT;
 import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
 import javax.ws.rs.Produces;
 import javax.ws.rs.core.HttpHeaders;
 import javax.ws.rs.core.MediaType;
@@ -66,4 +67,13 @@ default String sayHi() {
     @Path("methodContent")
     String methodContentType(@HeaderParam(HttpHeaders.CONTENT_TYPE) MediaType contentType, String entity);
 
+    @GET
+    @Path("{content: [a-zA-Z]+}")
+    @Produces(MediaType.TEXT_PLAIN)
+    String regex(@PathParam("content") String content);
+
+    @GET
+    @Path("content1/{content1}/content0/{content0: [0-9]{4}}")
+    @Produces(MediaType.TEXT_PLAIN)
+    String regex0(@PathParam("content1") String context0, @PathParam("content0") String context1);
 }

tests/integration/microprofile/rest-client/src/test/java/org/glassfish/jersey/restclient/ApplicationResourceImpl.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2020 Oracle and/or its affiliates. All rights reserved.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v. 2.0, which is available at
@@ -62,4 +62,13 @@ public String methodContentType(MediaType contentType, String entity) {
         return null;
     }
 
+    @Override
+    public String regex(String content) {
+        return content;
+    }
+
+    @Override
+    public String regex0(String context0, String context1) {
+        return context0 + "_" + context1;
+    }
 }

tests/integration/microprofile/rest-client/src/test/java/org/glassfish/jersey/restclient/ConsumesAndProducesTest.java

@@ -6,6 +6,7 @@
 
 import javax.json.Json;
 import javax.json.JsonValue;
+import javax.ws.rs.WebApplicationException;
 import javax.ws.rs.client.ClientRequestContext;
 import javax.ws.rs.client.ClientRequestFilter;
 import javax.ws.rs.core.HttpHeaders;
@@ -75,6 +76,33 @@ public void testMethodContentType() throws URISyntaxException {
         app.methodContentType(MediaType.TEXT_XML_TYPE, "something");
     }
 
+    @Test
+    public void testMethodWithRegexPathParam() throws URISyntaxException {
+        ApplicationResource app = RestClientBuilder.newBuilder()
+            .baseUri(new URI("http://localhost:9998"))
+            .build(ApplicationResource.class);
+
+        assertEquals(app.regex("bar"), "bar");
+    }
+
+    @Test
+    public void testMethodWithRegexPathParam0() throws URISyntaxException {
+        ApplicationResource app = RestClientBuilder.newBuilder()
+            .baseUri(new URI("http://localhost:9998"))
+            .build(ApplicationResource.class);
+
+        assertEquals(app.regex0("foo", "1234"), "foo_1234");
+    }
+
+    @Test(expected = WebApplicationException.class)
+    public void testMethodWithRegexPathParam0Failure() throws URISyntaxException {
+        ApplicationResource app = RestClientBuilder.newBuilder()
+            .baseUri(new URI("http://localhost:9998"))
+            .build(ApplicationResource.class);
+
+        app.regex0("foo", "12345");
+    }
+
     private static class TestClientRequestFilter implements ClientRequestFilter {
 
         private final String expectedAccept;