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Fix bugs and factoring; upgrade HtmlUnitDriver (#186)
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74 changes: 74 additions & 0 deletions
74
src/main/java/com/nordstrom/automation/selenium/plugins/PluginUtils.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| package com.nordstrom.automation.selenium.plugins; | ||
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| import java.io.IOException; | ||
| import java.lang.reflect.InvocationTargetException; | ||
| import java.util.Collections; | ||
| import java.util.Map; | ||
|
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| import org.apache.commons.lang3.reflect.ConstructorUtils; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
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| import com.google.common.reflect.ClassPath; | ||
| import com.google.common.reflect.ClassPath.ClassInfo; | ||
| import com.nordstrom.automation.selenium.DriverPlugin; | ||
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| /** | ||
| * This static utility class contains support methods for <b>Local Selenium Grid</b> plug-ins. | ||
| */ | ||
| public class PluginUtils { | ||
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| private static final String PLUGIN_PACKAGE_NAME = PluginUtils.class.getPackage().getName(); | ||
| private static final Logger LOGGER = LoggerFactory.getLogger(PluginUtils.class); | ||
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| private PluginUtils() { | ||
| throw new AssertionError("PluginUtils is a static constants class that cannot be instantiated"); | ||
| } | ||
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| /** | ||
| * Get "personalities" from the plug-in that supports the specified browser. | ||
| * <p> | ||
| * <b>NOTE</b>: This method uses the {@link ClassLoader} of the current thread to search for candidate classes, | ||
| * and only plug-in classes in the <i>com.nordstrom.automation.selenium.plugins</i> package are | ||
| * considered. | ||
| * | ||
| * @param browserName browser name | ||
| * @return map: "personality" → desired capabilities (JSON); empty if plug-in for browser not found | ||
| */ | ||
| public static Map<String, String> getPersonalitiesForBrowser(String browserName) { | ||
| try { | ||
| ClassLoader classLoader = Thread.currentThread().getContextClassLoader(); | ||
| ClassPath classPath = ClassPath.from(classLoader); | ||
| for (ClassInfo classInfo : classPath.getTopLevelClasses(PLUGIN_PACKAGE_NAME)) { | ||
| DriverPlugin driverPlugin = pluginForName(classInfo.getName()); | ||
| if ((driverPlugin != null) && (driverPlugin.getBrowserName().equals(browserName))) { | ||
| return driverPlugin.getPersonalities(); | ||
| } | ||
| } | ||
| } catch (IOException e) { | ||
| throw new IllegalArgumentException("Failed building class path model", e); | ||
| } | ||
| LOGGER.warn("No plugin for browser '{}' found in package: {}", browserName, PLUGIN_PACKAGE_NAME); | ||
| return Collections.emptyMap(); | ||
| } | ||
|
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| /** | ||
| * Create an instance of the specified plug-in class. | ||
| * | ||
| * @param candidateName candidate class name | ||
| * @return {@link DriverPlugin} object; {@code null} if instantiation attempt fails | ||
| */ | ||
| private static DriverPlugin pluginForName(String candidateName) { | ||
| try { | ||
| Class<?> clazz = Class.forName(candidateName); | ||
| if (DriverPlugin.class.isAssignableFrom(clazz)) { | ||
| return (DriverPlugin) ConstructorUtils.invokeConstructor(clazz); | ||
| } | ||
| } catch (ClassNotFoundException | NoSuchMethodException | IllegalAccessException | | ||
| InvocationTargetException | InstantiationException e) { | ||
| // nothing to do here | ||
| } | ||
| return null; | ||
| } | ||
|
|
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| } |