support passing apollo.meta and apollo.configService via system property, etc

apollo-client/src/main/java/com/ctrip/framework/apollo/internals/ConfigServiceLocator.java

 package com.ctrip.framework.apollo.internals;
 
+import com.ctrip.framework.apollo.core.ServiceNameConsts;
+import com.ctrip.framework.foundation.Foundation;
 import java.lang.reflect.Type;
 import java.util.List;
 import java.util.Map;
@@ -51,10 +53,57 @@ public class ConfigServiceLocator {
     m_configUtil = ApolloInjector.getInstance(ConfigUtil.class);
     this.m_executorService = Executors.newScheduledThreadPool(1,
         ApolloThreadFactory.create("ConfigServiceLocator", true));
+    initConfigServices();
+  }
+
+  private void initConfigServices() {
+    // get from run time configurations
+    List<ServiceDTO> customizedConfigServices = getCustomizedConfigService();
+
+    if (customizedConfigServices != null) {
+      setConfigServices(customizedConfigServices);
+      return;
+    }
+
+    // update from meta service
     this.tryUpdateConfigServices();
     this.schedulePeriodicRefresh();
   }
 
+  private List<ServiceDTO> getCustomizedConfigService() {
+    // 1. Get from System Property
+    String configServices = System.getProperty("apollo.configService");
+    if (Strings.isNullOrEmpty(configServices)) {
+      // 2. Get from OS environment variable
+      configServices = System.getenv("APOLLO.CONFIGSERVICE");
+    }
+    if (Strings.isNullOrEmpty(configServices)) {
+      // 3. Get from server.properties
+      configServices = Foundation.server().getProperty("apollo.configService", null);
+    }
+
+    if (Strings.isNullOrEmpty(configServices)) {
+      return null;
+    }
+
+    logger.warn("Located config services from apollo.configService configuration: {}, will not refresh config services from remote meta service!", configServices);
+
+    // mock service dto list
+    String[] configServiceUrls = configServices.split(",");
+    List<ServiceDTO> serviceDTOS = Lists.newArrayList();
+
+    for (String configServiceUrl : configServiceUrls) {
+      configServiceUrl = configServiceUrl.trim();
+      ServiceDTO serviceDTO = new ServiceDTO();
+      serviceDTO.setHomepageUrl(configServiceUrl);
+      serviceDTO.setAppName(ServiceNameConsts.APOLLO_CONFIGSERVICE);
+      serviceDTO.setInstanceId(configServiceUrl);
+      serviceDTOS.add(serviceDTO);
+    }
+
+    return serviceDTOS;
+  }
+
   /**
    * Get the config service info from remote meta server.
    *
@@ -109,8 +158,7 @@ public class ConfigServiceLocator {
           logConfigService("Empty response!");
           continue;
         }
-        m_configServices.set(services);
-        logConfigServices(services);
+        setConfigServices(services);
         return;
       } catch (Throwable ex) {
         Tracer.logEvent("ApolloConfigException", ExceptionUtil.getDetailMessage(ex));
@@ -131,6 +179,11 @@ public class ConfigServiceLocator {
         String.format("Get config services failed from %s", url), exception);
   }
 
+  private void setConfigServices(List<ServiceDTO> services) {
+    m_configServices.set(services);
+    logConfigServices(services);
+  }
+
   private String assembleMetaServiceUrl() {
     String domainName = m_configUtil.getMetaServerDomainName();
     String appId = m_configUtil.getAppId();

apollo-client/src/main/java/com/ctrip/framework/apollo/util/ConfigUtil.java

@@ -221,7 +221,11 @@ public class ConfigUtil {
     // 1. Get from System Property
     String cacheRoot = System.getProperty("apollo.cacheDir");
     if (Strings.isNullOrEmpty(cacheRoot)) {
-      // 2. Get from server.properties
+      // 2. Get from OS environment variable
+      cacheRoot = System.getenv("APOLLO.CACHEDIR");
+    }
+    if (Strings.isNullOrEmpty(cacheRoot)) {
+      // 3. Get from server.properties
       cacheRoot = Foundation.server().getProperty("apollo.cacheDir", null);
     }
 

apollo-client/src/test/java/com/ctrip/framework/apollo/internals/ConfigServiceLocatorTest.java

+package com.ctrip.framework.apollo.internals;
+
+import static org.junit.Assert.assertEquals;
+
+import com.ctrip.framework.apollo.core.dto.ServiceDTO;
+import java.util.List;
+import org.junit.After;
+import org.junit.Test;
+
+public class ConfigServiceLocatorTest {
+
+  @After
+  public void tearDown() throws Exception {
+    System.clearProperty("apollo.configService");
+  }
+
+  @Test
+  public void testGetConfigServicesWithSystemProperty() throws Exception {
+    String someConfigServiceUrl = " someConfigServiceUrl ";
+    String anotherConfigServiceUrl = " anotherConfigServiceUrl ";
+
+    System.setProperty("apollo.configService", someConfigServiceUrl + "," + anotherConfigServiceUrl);
+
+    ConfigServiceLocator configServiceLocator = new ConfigServiceLocator();
+
+    List<ServiceDTO> result = configServiceLocator.getConfigServices();
+
+    assertEquals(2, result.size());
+
+    assertEquals(someConfigServiceUrl.trim(), result.get(0).getHomepageUrl());
+    assertEquals(anotherConfigServiceUrl.trim(), result.get(1).getHomepageUrl());
+  }
+}

apollo-core/src/main/java/com/ctrip/framework/apollo/core/MetaDomainConsts.java

@@ -6,6 +6,8 @@ import com.ctrip.framework.apollo.core.utils.NetUtil;
 import com.ctrip.framework.apollo.core.utils.ResourceUtils;
 import com.ctrip.framework.apollo.tracer.Tracer;
 import com.ctrip.framework.apollo.tracer.spi.Transaction;
+import com.ctrip.framework.foundation.Foundation;
+import com.google.common.base.Strings;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 import java.util.Collections;
@@ -33,9 +35,10 @@ public class MetaDomainConsts {
   private static final long REFRESH_INTERVAL_IN_SECOND = 60;//1 min
   private static final Logger logger = LoggerFactory.getLogger(MetaDomainConsts.class);
 
-  private static Map<Env, String> domains = new HashMap<>();
-  private static Map<String, String> metaServerAddressCache = Maps.newConcurrentMap();
-  private static AtomicBoolean periodicRefreshStarted = new AtomicBoolean(false);
+  private static final Map<Env, String> domains = new HashMap<>();
+  private static final Map<String, String> metaServerAddressCache = Maps.newConcurrentMap();
+  private static final AtomicBoolean periodicRefreshStarted = new AtomicBoolean(false);
+  private static final AtomicBoolean customizedMetaServiceLogged = new AtomicBoolean(false);
 
   static {
     initialize();
@@ -60,11 +63,38 @@ public class MetaDomainConsts {
   }
 
   public static String getDomain(Env env) {
-    String metaAddress = domains.get(env);
-    //if there is more than one address, need to select one
+    // 1. Get meta server address from run time configurations
+    String metaAddress = getCustomizedMetaServerAddress();
+    if (Strings.isNullOrEmpty(metaAddress)) {
+      // 2. Get meta server address from environment
+      metaAddress = domains.get(env);
+    }
+    // 3. if there is more than one address, need to select one
     if (metaAddress != null && metaAddress.contains(",")) {
       return selectMetaServerAddress(metaAddress);
     }
+    // 4. trim if necessary
+    if (metaAddress != null) {
+      metaAddress = metaAddress.trim();
+    }
+    return metaAddress;
+  }
+
+  private static String getCustomizedMetaServerAddress() {
+    // 1. Get from System Property
+    String metaAddress = System.getProperty("apollo.meta");
+    if (Strings.isNullOrEmpty(metaAddress)) {
+      // 2. Get from OS environment variable
+      metaAddress = System.getenv("APOLLO.META");
+    }
+    if (Strings.isNullOrEmpty(metaAddress)) {
+      metaAddress = Foundation.server().getProperty("apollo.meta", null);
+    }
+
+    if (!Strings.isNullOrEmpty(metaAddress) && customizedMetaServiceLogged.compareAndSet(false, true)) {
+      logger.warn("Located meta services from apollo.meta configuration: {}, will not use meta services defined in apollo-env.properties!", metaAddress);
+    }
+
     return metaAddress;
   }
 
@@ -105,6 +135,7 @@ public class MetaDomainConsts {
       boolean serverAvailable = false;
 
       for (String address : metaServers) {
+        address = address.trim();
         if (NetUtil.pingUrl(address)) {
           //select the first available meta server
           metaServerAddressCache.put(metaServerAddresses, address);
@@ -116,7 +147,7 @@ public class MetaDomainConsts {
 
       //we need to make sure the map is not empty, e.g. the first update might be failed
       if (!metaServerAddressCache.containsKey(metaServerAddresses)) {
-        metaServerAddressCache.put(metaServerAddresses, metaServers.get(0));
+        metaServerAddressCache.put(metaServerAddresses, metaServers.get(0).trim());
       }
 
       if (!serverAvailable) {

apollo-core/src/test/java/com/ctrip/framework/apollo/core/MetaDomainTest.java

@@ -18,6 +18,7 @@ public class MetaDomainTest extends BaseIntegrationTest {
     System.clearProperty("fat_meta");
     System.clearProperty("uat_meta");
     System.clearProperty("lpt_meta");
+    System.clearProperty("apollo.meta");
   }
 
   @Test
@@ -27,12 +28,22 @@ public class MetaDomainTest extends BaseIntegrationTest {
     assertEquals(MetaDomainConsts.DEFAULT_META_URL, MetaDomainConsts.getDomain(Env.PRO));
   }
 
+  @Test
+  public void testGetMetaDomainWithSystemProperty() throws Exception {
+    String someMeta = "some-meta";
+    Env someEnv = Env.DEV;
+
+    System.setProperty("apollo.meta", someMeta);
+
+    assertEquals(someMeta, MetaDomainConsts.getDomain(someEnv));
+  }
+
   @Test
   public void testGetValidAddress() throws Exception {
     String someResponse = "some response";
     startServerWithHandlers(mockServerHandler(HttpServletResponse.SC_OK, someResponse));
 
-    String validServer = "http://localhost:" + PORT;
+    String validServer = " http://localhost:" + PORT + " ";
     String invalidServer = "http://localhost:" + findFreePort();
 
     System.setProperty("fat_meta", validServer + "," + invalidServer);
@@ -40,14 +51,14 @@ public class MetaDomainTest extends BaseIntegrationTest {
 
     MetaDomainConsts.initialize();
 
-    assertEquals(validServer, MetaDomainConsts.getDomain(Env.FAT));
-    assertEquals(validServer, MetaDomainConsts.getDomain(Env.UAT));
+    assertEquals(validServer.trim(), MetaDomainConsts.getDomain(Env.FAT));
+    assertEquals(validServer.trim(), MetaDomainConsts.getDomain(Env.UAT));
   }
 
   @Test
   public void testInvalidAddress() throws Exception {
-    String invalidServer = "http://localhost:" + findFreePort();
-    String anotherInvalidServer = "http://localhost:" + findFreePort();
+    String invalidServer = "http://localhost:" + findFreePort() + " ";
+    String anotherInvalidServer = "http://localhost:" + findFreePort() + " ";
 
     System.setProperty("lpt_meta", invalidServer + "," + anotherInvalidServer);
 
@@ -55,6 +66,6 @@ public class MetaDomainTest extends BaseIntegrationTest {
 
     String metaServer = MetaDomainConsts.getDomain(Env.LPT);
 
-    assertTrue(metaServer.equals(invalidServer) || metaServer.equals(anotherInvalidServer));
+    assertTrue(metaServer.equals(invalidServer.trim()) || metaServer.equals(anotherInvalidServer.trim()));
   }
 }

apollo-core/src/test/java/com/ctrip/framework/apollo/foundation/FoundationTest.java → apollo-core/src/test/java/com/ctrip/framework/foundation/FoundationTest.java

-package com.ctrip.framework.apollo.foundation;
+package com.ctrip.framework.foundation;
 
-import org.junit.AfterClass;
-import org.junit.Assert;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import static org.junit.Assert.assertTrue;
 
 import com.ctrip.framework.foundation.Foundation;
+import com.ctrip.framework.foundation.internals.provider.DefaultApplicationProvider;
+import com.ctrip.framework.foundation.internals.provider.DefaultServerProvider;
+import org.junit.Assert;
+import org.junit.Test;
 
 public class FoundationTest {
-  private static final String someEnv = "pro";
-
-   @BeforeClass
-   public static void before() {
-      System.setProperty("env", someEnv);
-   }
-
-   @AfterClass
-   public static void afterClass() {
-      System.clearProperty("env");
-   }
 
    @Test
    public void testApp() {
-      // 获取AppId
-      String appId = Foundation.app().getAppId();
-      Assert.assertEquals("110402", appId);
+      assertTrue(Foundation.app() instanceof DefaultApplicationProvider);
    }
 
    @Test
    public void testServer() {
-      // 获取当前环境
-      String envType = Foundation.server().getEnvType();
-      Assert.assertEquals(someEnv, envType);
+      assertTrue(Foundation.server() instanceof DefaultServerProvider);
    }
 
    @Test

apollo-core/src/test/java/com/ctrip/framework/apollo/foundation/internals/ServiceBootstrapTest.java → apollo-core/src/test/java/com/ctrip/framework/foundation/internals/ServiceBootstrapTest.java

-package com.ctrip.framework.apollo.foundation.internals;
+package com.ctrip.framework.foundation.internals;
 
 import com.ctrip.framework.foundation.internals.ServiceBootstrap;
 import org.junit.Test;

apollo-core/src/test/java/com/ctrip/framework/apollo/foundation/internals/provider/DefaultApplicationProviderTest.java → apollo-core/src/test/java/com/ctrip/framework/foundation/internals/provider/DefaultApplicationProviderTest.java

-package com.ctrip.framework.apollo.foundation.internals.provider;
+package com.ctrip.framework.foundation.internals.provider;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;

apollo-core/src/test/java/com/ctrip/framework/apollo/foundation/internals/provider/DefaultServerProviderTest.java → apollo-core/src/test/java/com/ctrip/framework/foundation/internals/provider/DefaultServerProviderTest.java

-package com.ctrip.framework.apollo.foundation.internals.provider;
+package com.ctrip.framework.foundation.internals.provider;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;

apollo-core/src/test/resources/META-INF/services/com.ctrip.framework.apollo.foundation.internals.ServiceBootstrapTest$Interface1

-com.ctrip.framework.apollo.foundation.internals.ServiceBootstrapTest$Interface1Impl
\ No newline at end of file

apollo-core/src/test/resources/META-INF/services/com.ctrip.framework.apollo.foundation.internals.ServiceBootstrapTest$Interface4

-com.ctrip.framework.apollo.foundation.internals.ServiceBootstrapTest$Interface1Impl
\ No newline at end of file

apollo-core/src/test/resources/META-INF/services/com.ctrip.framework.apollo.foundation.internals.ServiceBootstrapTest$Interface5

-com.ctrip.framework.apollo.foundation.internals.ServiceBootstrapTest$SomeImplNotExists
\ No newline at end of file

apollo-core/src/test/resources/META-INF/services/com.ctrip.framework.foundation.internals.ServiceBootstrapTest$Interface1

+com.ctrip.framework.foundation.internals.ServiceBootstrapTest$Interface1Impl

apollo-core/src/test/resources/META-INF/services/com.ctrip.framework.foundation.internals.ServiceBootstrapTest$Interface4

+com.ctrip.framework.foundation.internals.ServiceBootstrapTest$Interface1Impl

apollo-core/src/test/resources/META-INF/services/com.ctrip.framework.foundation.internals.ServiceBootstrapTest$Interface5

+com.ctrip.framework.foundation.internals.ServiceBootstrapTest$SomeImplNotExists

apollo-demo/src/main/java/com/ctrip/framework/apollo/demo/api/SimpleApolloConfigDemo.java

@@ -27,9 +27,6 @@ public class SimpleApolloConfigDemo {
     ConfigChangeListener changeListener = new ConfigChangeListener() {
       @Override
       public void onChange(ConfigChangeEvent changeEvent) {
-        if (!changeEvent.isChanged("someKey")) {
-          return;
-        }
         logger.info("Changes for namespace {}", changeEvent.getNamespace());
         for (String key : changeEvent.changedKeys()) {
           ConfigChange change = changeEvent.getChange(key);

apollo-demo/src/main/java/com/ctrip/framework/apollo/demo/spring/springBootDemo/refresh/SpringBootApolloRefreshConfig.java

@@ -29,7 +29,6 @@ public class SpringBootApolloRefreshConfig {
   public void onChange(ConfigChangeEvent changeEvent) {
     boolean redisCacheKeysChanged = false;
     for (String changedKey : changeEvent.changedKeys()) {
-      if (changeEvent.isChanged("someKey"))
       if (changedKey.startsWith("redis.cache")) {
         redisCacheKeysChanged = true;
         break;