Support rocksdbjava aarch64 build and test (#5258)

Summary:
Verified with an Ampere Computing eMAG aarch64 system.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5258

Differential Revision: D15807309

Pulled By: maysamyabandeh

fbshipit-source-id: ab85d2fd3fe40e6094430ab0eba557b1e979510d

Makefile

@@ -1641,7 +1641,7 @@ JAVA_INCLUDE = -I$(JAVA_HOME)/include/ -I$(JAVA_HOME)/include/linux
 ifeq ($(PLATFORM), OS_SOLARIS)
 	ARCH := $(shell isainfo -b)
 else ifeq ($(PLATFORM), OS_OPENBSD)
-	ifneq (,$(filter $(MACHINE), amd64 arm64 sparc64))
+	ifneq (,$(filter $(MACHINE), amd64 arm64 sparc64 aarch64))
 		ARCH := 64
 	else
 		ARCH := 32
@@ -1655,6 +1655,9 @@ ifeq (,$(findstring ppc,$(MACHINE)))
 else
         ROCKSDBJNILIB = librocksdbjni-linux-$(MACHINE).so
 endif
+ifneq (,$(findstring aarch64,$(MACHINE)))
+        ROCKSDBJNILIB = librocksdbjni-linux-$(MACHINE).so
+endif
 ROCKSDB_JAR = rocksdbjni-$(ROCKSDB_MAJOR).$(ROCKSDB_MINOR).$(ROCKSDB_PATCH)-linux$(ARCH).jar
 ROCKSDB_JAR_ALL = rocksdbjni-$(ROCKSDB_MAJOR).$(ROCKSDB_MINOR).$(ROCKSDB_PATCH).jar
 ROCKSDB_JAVADOCS_JAR = rocksdbjni-$(ROCKSDB_MAJOR).$(ROCKSDB_MINOR).$(ROCKSDB_PATCH)-javadoc.jar

build_tools/build_detect_platform

@@ -540,6 +540,8 @@ if test -z "$PORTABLE"; then
   elif test -n "`echo $TARGET_ARCHITECTURE | grep ^arm`"; then
     # TODO: Handle this with approprite options.
     COMMON_FLAGS="$COMMON_FLAGS"
+  elif test -n "`echo $TARGET_ARCHITECTURE | grep ^aarch64`"; then
+    COMMON_FLAGS="$COMMON_FLAGS"
   elif [ "$TARGET_OS" == "IOS" ]; then
     COMMON_FLAGS="$COMMON_FLAGS"
   elif [ "$TARGET_OS" != "AIX" ] && [ "$TARGET_OS" != "SunOS" ]; then

java/src/main/java/org/rocksdb/util/Environment.java

@@ -5,6 +5,10 @@ public class Environment {
   private static String OS = System.getProperty("os.name").toLowerCase();
   private static String ARCH = System.getProperty("os.arch").toLowerCase();
 
+  public static boolean isAarch64() {
+    return ARCH.contains("aarch64");
+  }
+
   public static boolean isPowerPC() {
     return ARCH.contains("ppc");
   }
@@ -60,7 +64,7 @@ public class Environment {
   public static String getJniLibraryName(final String name) {
     if (isUnix()) {
       final String arch = is64Bit() ? "64" : "32";
-      if(isPowerPC()) {
+      if(isPowerPC() || isAarch64()) {
         return String.format("%sjni-linux-%s", name, ARCH);
       } else if(isS390x()) {
         return String.format("%sjni-linux%s", name, ARCH);

java/src/test/java/org/rocksdb/util/EnvironmentTest.java

@@ -130,6 +130,24 @@ public class EnvironmentTest {
       isEqualTo("librocksdbjni.dll");
   }
 
+  @Test
+  public void aarch64() {
+    setEnvironmentClassFields("Linux", "aarch64");
+    assertThat(Environment.isUnix()).isTrue();
+    assertThat(Environment.isAarch64()).isTrue();
+    assertThat(Environment.is64Bit()).isTrue();
+    assertThat(Environment.getJniLibraryExtension()).
+        isEqualTo(".so");
+    assertThat(Environment.getSharedLibraryName("rocksdb")).
+        isEqualTo("rocksdbjni");
+    assertThat(Environment.getJniLibraryName("rocksdb")).
+        isEqualTo("rocksdbjni-linux-aarch64");
+    assertThat(Environment.getJniLibraryFileName("rocksdb")).
+        isEqualTo("librocksdbjni-linux-aarch64.so");
+    assertThat(Environment.getSharedLibraryFileName("rocksdb")).
+        isEqualTo("librocksdbjni.so");
+  }
+
   private void setEnvironmentClassFields(String osName,
       String osArch) {
     setEnvironmentClassField(OS_FIELD_NAME, osName);