[java] Process Selenium Manager output as JSON

java/src/org/openqa/selenium/manager/BUILD.bazel

@@ -19,6 +19,7 @@ java_export(
     deps = [
         "//java/src/org/openqa/selenium:core",
         artifact("com.google.guava:guava"),
+        artifact("com.google.code.gson:gson"),
     ],
 )
 

java/src/org/openqa/selenium/manager/SeleniumManager.java

@@ -18,6 +18,7 @@
 
 import com.google.common.collect.ImmutableList;
 import com.google.common.io.CharStreams;
+import com.google.gson.GsonBuilder;
 import org.openqa.selenium.Beta;
 import org.openqa.selenium.Platform;
 import org.openqa.selenium.WebDriverException;
@@ -53,7 +54,7 @@ public class SeleniumManager {
 
     private static final String SELENIUM_MANAGER = "selenium-manager";
     private static final String EXE = ".exe";
-    private static final String INFO = "INFO\t";
+    private static final String WARN = "WARN";
 
     private static SeleniumManager manager;
 
@@ -110,8 +111,11 @@ private static String runCommand(String... command) {
             throw new WebDriverException("Unsuccessful command executed: " + Arrays.toString(command) +
                     "\n" + output);
         }
-
-        return output.replace(INFO, "").trim();
+        SeleniumManagerJsonOutput jsonOutput = new GsonBuilder().create().fromJson(output,
+                SeleniumManagerJsonOutput.class);
+        jsonOutput.logs.stream().filter(log -> log.level.equalsIgnoreCase(WARN))
+                .forEach(log -> LOG.warning(log.message));
+        return jsonOutput.result.message;
     }
 
     /**
@@ -162,7 +166,7 @@ public String getDriverPath(String driverName) {
         File binaryFile = getBinary();
         if (binaryFile != null) {
             driverPath = runCommand(binaryFile.getAbsolutePath(),
-                    "--driver", driverName.replaceAll(EXE, ""));
+                    "--output", "json", "--driver", driverName.replaceAll(EXE, ""));
         }
         return driverPath;
     }

java/src/org/openqa/selenium/manager/SeleniumManagerJsonOutput.java

@@ -0,0 +1,37 @@
+// Licensed to the Software Freedom Conservancy (SFC) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The SFC licenses this file
+// to you 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.
+package org.openqa.selenium.manager;
+
+import java.util.List;
+
+public class SeleniumManagerJsonOutput {
+
+    List<Log> logs;
+    Result result;
+
+    class Log {
+        String level;
+        long timestamp;
+        String message;
+    }
+
+    class Result {
+        int code;
+        String message;
+    }
+
+}