Reduce deploy pkg size

builtin-adapter/CMakeLists.txt

@@ -18,6 +18,19 @@ include_directories(${JNI_INCLUDE_DIRS} ${REINDEXER_INCLUDE_DIRS})
 
 target_link_libraries(${TARGET} reindexer_server_library reindexer_server_resources ${REINDEXER_LIBRARIES})
 
+if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
+  set(JNI_EXPORTS "${CMAKE_CURRENT_SOURCE_DIR}/jni.exports")
+  set_property(TARGET ${TARGET} APPEND_STRING PROPERTY LINK_FLAGS
+    " -Wl,--version-script=\"${JNI_EXPORTS}\" -Wl,--gc-sections")
+  set_property(TARGET ${TARGET} APPEND PROPERTY LINK_DEPENDS "${JNI_EXPORTS}")
+
+  # Keep the regular symbol table for native backtraces, but omit DWARF data.
+  add_custom_command(TARGET ${TARGET} POST_BUILD
+    COMMAND "${CMAKE_STRIP}" --strip-debug "$<TARGET_FILE:${TARGET}>"
+    VERBATIM
+  )
+endif()
+
 # Workaround for macOS to propagate a correct OpenSSL lib path to Reindexer.
 if(APPLE)
   find_package(OpenSSL)

builtin-adapter/jni.exports

@@ -0,0 +1,7 @@
+{
+  global:
+    Java_ru_rt_restream_reindexer_binding_builtin_BuiltinAdapter_*;
+    Java_ru_rt_restream_reindexer_util_NativeUtils_*;
+  local:
+    *;
+};

pom.xml

@@ -105,6 +105,12 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-source-plugin</artifactId>
                 <version>2.2.1</version>
+                <configuration>
+                    <excludes>
+                        <exclude>**/*.so</exclude>
+                        <exclude>**/*.dylib</exclude>
+                    </excludes>
+                </configuration>
                 <executions>
                     <execution>
                         <id>attach-sources</id>

src/main/java/ru/rt/restream/reindexer/binding/builtin/BuiltinAdapter.java

@@ -51,17 +51,23 @@ public class BuiltinAdapter {
 
     private static void loadLibrary(String fileName) throws IOException {
         Path tempFile = Files.createTempFile("rx-connector-", fileName);
+        boolean loaded = false;
         LOGGER.debug("rx: loading {}", tempFile);
         try (InputStream is = BuiltinAdapter.class.getClassLoader().getResourceAsStream(fileName)) {
             if (is == null) {
                 throw new IllegalArgumentException("File: '" + fileName + "' is not found");
             }
             Files.copy(is, tempFile, StandardCopyOption.REPLACE_EXISTING);
+            // Native backtrace resolution needs the ELF file after the library is loaded.
+            tempFile.toFile().deleteOnExit();
             System.load(tempFile.toAbsolutePath().toString());
+            loaded = true;
             LOGGER.debug("rx: loaded {}", tempFile);
         } finally {
-            Files.delete(tempFile);
-            LOGGER.debug("rx: deleted {}", tempFile);
+            if (!loaded) {
+                Files.deleteIfExists(tempFile);
+                LOGGER.debug("rx: deleted {}", tempFile);
+            }
         }
     }