From 9b9b7b18308dbbe6d7b7eb7a2aa53d8dbd0f8095 Mon Sep 17 00:00:00 2001
From: kares <self@kares.org>
Date: Wed, 7 Jul 2021 13:44:53 +0200
Subject: [PATCH] Refactor: simplify config_hash generation

---
 .../execution/AbstractPipelineExt.java        | 23 +++++++++++++------
 .../execution/JavaBasePipelineExt.java        |  3 +--
 2 files changed, 17 insertions(+), 9 deletions(-)

diff --git a/logstash-core/src/main/java/org/logstash/execution/AbstractPipelineExt.java b/logstash-core/src/main/java/org/logstash/execution/AbstractPipelineExt.java
index d08385be801..7b77c8368ee 100644
--- a/logstash-core/src/main/java/org/logstash/execution/AbstractPipelineExt.java
+++ b/logstash-core/src/main/java/org/logstash/execution/AbstractPipelineExt.java
@@ -46,6 +46,7 @@
 import org.jruby.runtime.ThreadContext;
 import org.jruby.runtime.Visibility;
 import org.jruby.runtime.builtin.IRubyObject;
+import org.jruby.util.ByteList;
 import org.logstash.RubyUtil;
 import org.logstash.ackedqueue.QueueFactoryExt;
 import org.logstash.ackedqueue.ext.JRubyAckedQueueExt;
@@ -148,19 +149,14 @@ public AbstractPipelineExt(final Ruby runtime, final RubyClass metaClass) {
     @JRubyMethod
     public final AbstractPipelineExt initialize(final ThreadContext context,
         final IRubyObject pipelineConfig, final IRubyObject namespacedMetric,
-        final IRubyObject rubyLogger)
-        throws NoSuchAlgorithmException {
+        final IRubyObject rubyLogger) {
         reporter = new PipelineReporterExt(
             context.runtime, RubyUtil.PIPELINE_REPORTER_CLASS).initialize(context, rubyLogger, this
         );
         pipelineSettings = pipelineConfig;
         configString = (RubyString) pipelineSettings.callMethod(context, "config_string");
         configParts = pipelineSettings.toJava(PipelineConfig.class).getConfigParts();
-        configHash = context.runtime.newString(
-            Hex.encodeHexString(
-                MessageDigest.getInstance("SHA1").digest(configString.getBytes())
-            )
-        );
+        configHash = context.runtime.newString(Hex.encodeHexString(digestString(configString)));
         settings = pipelineSettings.callMethod(context, "settings");
         final IRubyObject id = getSetting(context, "pipeline.id");
         if (id.isNil()) {
@@ -191,6 +187,19 @@ public final AbstractPipelineExt initialize(final ThreadContext context,
         return this;
     }
 
+    private static byte[] digestString(final RubyString content) {
+        final MessageDigest digest;
+        try {
+            digest = MessageDigest.getInstance("SHA1");
+        } catch (NoSuchAlgorithmException ex) {
+            throw new AssertionError(ex);
+        }
+
+        final ByteList bytes = content.getByteList();
+        digest.update(bytes.getUnsafeBytes(), bytes.getBegin(), bytes.getRealSize());
+        return digest.digest();
+    }
+
     /**
      * queue opening needs to happen out of the the initialize method because the
      * AbstractPipeline is used for pipeline config validation and the queue
diff --git a/logstash-core/src/main/java/org/logstash/execution/JavaBasePipelineExt.java b/logstash-core/src/main/java/org/logstash/execution/JavaBasePipelineExt.java
index f860aebbf63..3e401858730 100644
--- a/logstash-core/src/main/java/org/logstash/execution/JavaBasePipelineExt.java
+++ b/logstash-core/src/main/java/org/logstash/execution/JavaBasePipelineExt.java
@@ -67,8 +67,7 @@ public JavaBasePipelineExt(final Ruby runtime, final RubyClass metaClass) {
     }
 
     @JRubyMethod(required = 4)
-    public JavaBasePipelineExt initialize(final ThreadContext context, final IRubyObject[] args)
-        throws IncompleteSourceWithMetadataException, NoSuchAlgorithmException {
+    public JavaBasePipelineExt initialize(final ThreadContext context, final IRubyObject[] args) {
         initialize(context, args[0], args[1], args[2]);
         lirExecution = new CompiledPipeline(
             lir,