fix: fix sdk version report

Author: jianggang

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>com.featureprobe</groupId>
     <artifactId>server-sdk-java</artifactId>
-    <version>1.3.0</version>
+    <version>1.3.1</version>
     <name>server-sdk-java</name>
     <url>https://github.com/FeatureProbe/server-sdk-java</url>
     <description>FeatureProbe Server Side SDK for Java</description>

src/main/java/com/featureprobe/sdk/server/FPConfig.java

@@ -6,7 +6,7 @@
 
 public final class FPConfig {
 
-    static final URI DEFAULT_REMOTE_URI = URI.create("http://127.0.0.1:4007");
+    static final URI DEFAULT_REMOTE_URI = URI.create("http://localhost:4009/server");
 
     static final Duration DEFAULT_INTERVAL = Duration.ofSeconds(5);
 

src/main/java/com/featureprobe/sdk/server/FPContext.java

@@ -3,11 +3,12 @@
 import okhttp3.Headers;
 import org.slf4j.Logger;
 
-import java.io.IOException;
+import java.io.InputStream;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.time.Duration;
 import java.util.Objects;
+import java.util.Properties;
 
 final class FPContext {
 
@@ -58,12 +59,7 @@ final class FPContext {
         this.refreshInterval = config.refreshInterval;
         this.location = config.location;
         this.httpConfiguration = config.httpConfiguration;
-        String sdkVersion = DEFAULT_SDK_VERSION;
-        try {
-            sdkVersion = Utils.readSdkVersion();
-        } catch (IOException e) {
-            logger.error("read sdk version error", e);
-        }
+        String sdkVersion = getVersion();
         this.headers = config.httpConfiguration.headers.newBuilder()
                 .add(GET_SDK_KEY_HEADER, serverSdkKey)
                 .add(USER_AGENT_HEADER, SDK_FLAG_PREFIX + sdkVersion)
@@ -97,4 +93,33 @@ public HttpConfiguration getHttpConfiguration() {
     public Headers getHeaders() {
         return headers;
     }
+
+    private synchronized String getVersion() {
+        String version = null;
+        try {
+            Properties p = new Properties();
+            InputStream is = getClass()
+                    .getResourceAsStream("/META-INF/maven/com.featureprobe/server-sdk-java/pom.properties");
+            if (is != null) {
+                p.load(is);
+                version = p.getProperty("version", "");
+            }
+        } catch (Exception e) {
+
+        }
+        if (version == null) {
+            Package aPackage = getClass().getPackage();
+            if (aPackage != null) {
+                version = aPackage.getImplementationVersion();
+                if (version == null) {
+                    version = aPackage.getSpecificationVersion();
+                }
+            }
+        }
+        if (version == null) {
+            version = "";
+        }
+        return version;
+    }
+
 }