Remove use of Cloudflare zlib (elastic#84680) (elastic#84696)

Relates to elastic#81662. This library isn't ready for public consumption.
Remove it from the Docker build.

distribution/docker/build.gradle

@@ -16,8 +16,6 @@ apply plugin: 'elasticsearch.test.fixtures'
 apply plugin: 'elasticsearch.internal-distribution-download'
 apply plugin: 'elasticsearch.rest-resources'
 
-ext.cloudflareZlibVersion = '1.2.8'
-
 String buildId = providers.systemProperty('build.id').getOrNull()
 boolean useLocalArtifacts = buildId != null && buildId.isBlank() == false
 
@@ -36,15 +34,6 @@ repositories {
     content { includeGroup 'krallin' }
   }
 
-  ivy {
-    url 'https://github.com/'
-    patternLayout {
-      artifact '/[organisation]/[module]/archive/refs/tags/v[revision].[ext]'
-    }
-    metadataSources { artifact() }
-    content { includeGroup 'cloudflare' }
-  }
-
   // Cloud builds bundle some beats
   ivy {
     if (useLocalArtifacts) {
@@ -73,7 +62,6 @@ configurations {
   allPlugins
   filebeat
   metricbeat
-  cloudflareZlib
 }
 
 String beatsArch = Architecture.current() == Architecture.AARCH64 ? 'arm64' : 'x86_64'
@@ -87,7 +75,6 @@ dependencies {
   allPlugins project(path: ':plugins', configuration: 'allPlugins')
   filebeat "beats:filebeat:${VersionProperties.elasticsearch}:${beatsArch}@tar.gz"
   metricbeat "beats:metricbeat:${VersionProperties.elasticsearch}:${beatsArch}@tar.gz"
-  cloudflareZlib "cloudflare:zlib:${cloudflareZlibVersion}@tar.gz"
 }
 
 ext.expansions = { Architecture architecture, DockerBase base ->
@@ -112,8 +99,7 @@ ext.expansions = { Architecture architecture, DockerBase base ->
     'docker_base'        : base.name().toLowerCase(),
     'version'            : VersionProperties.elasticsearch,
     'major_minor_version': "${major}.${minor}",
-    'retry'              : ShellRetry,
-    'zlib_version'       : cloudflareZlibVersion
+    'retry'              : ShellRetry
   ]
 }
 
@@ -302,8 +288,7 @@ void addTransformDockerContextTask(Architecture architecture, DockerBase base) {
       eachFile { FileCopyDetails details ->
         if (details.name.equals("Dockerfile")) {
           filter { String filename ->
-            String result = filename.replaceAll('^RUN curl.*artifacts-no-kpi.*$', "COPY ${distributionName} /tmp/elasticsearch.tar.gz")
-            return result.replaceAll('^RUN curl.*cloudflare/zlib.*$', "COPY zlib-${cloudflareZlibVersion}.tar.gz /tmp")
+            return filename.replaceAll('^RUN curl.*artifacts-no-kpi.*$', "COPY ${distributionName} /tmp/elasticsearch.tar.gz")
           }
         }
       }
@@ -317,8 +302,6 @@ void addTransformDockerContextTask(Architecture architecture, DockerBase base) {
       from configurations.dockerSource
     }
 
-    from configurations.cloudflareZlib
-
     if (base == DockerBase.IRON_BANK) {
       from (configurations.tini) {
         rename { _ -> 'tini' }

distribution/docker/src/docker/Dockerfile

@@ -25,32 +25,6 @@ ARG BASE_IMAGE=ironbank/redhat/ubi/ubi8
 ARG BASE_TAG=8.5
 <% } %>
 
-################################################################################
-# Build stage 0 `zlib`:
-# Compile zlib for the current architecture
-################################################################################
-
-FROM ${base_image} AS zlib
-
-<% if (docker_base == 'default' || docker_base == 'cloud') { %>
-RUN <%= retry.loop(package_manager, "${package_manager} update && DEBIAN_FRONTEND=noninteractive ${package_manager} install -y curl gcc make") %>
-<% } else { %>
-RUN <%= retry.loop(package_manager, "${package_manager} install -y curl gcc make tar gzip") %>
-<% } %>
-
-<%
-// Fetch the zlib source.  Keep this command on one line - it is replaced
-// with a `COPY` during local builds.
-%>
-WORKDIR /tmp
-RUN curl --retry 10 -S -L -o zlib-${zlib_version}.tar.gz https://github.com/cloudflare/zlib/archive/refs/tags/v${zlib_version}.tar.gz
-RUN echo "7e393976368975446b263ae4143fb404bc33bf3b436e72007700b5b88e5be332cd461cdec42d31a4b6dffdca2368550f01b9fa1165d81c0aa818bbf2b1ac191e zlib-${zlib_version}.tar.gz" \\
-      | sha512sum --check -
-RUN tar xf zlib-${zlib_version}.tar.gz
-
-WORKDIR /tmp/zlib-${zlib_version}
-RUN ./configure --prefix=/usr/local/cloudflare-zlib && make && make install
-
 ################################################################################
 # Build stage 1 `builder`:
 # Extract Elasticsearch artifact
@@ -162,7 +136,6 @@ RUN chmod -R 0555 /opt/plugins
 ################################################################################
 # Build stage 2 (the actual Elasticsearch image):
 #
-# Copy zlib from stage 2
 # Copy elasticsearch from stage 1
 # Add entrypoint
 ################################################################################
@@ -224,14 +197,12 @@ WORKDIR /usr/share/elasticsearch
 
 COPY --from=builder --chown=0:0 /usr/share/elasticsearch /usr/share/elasticsearch
 COPY --from=builder --chown=0:0 /bin/tini /bin/tini
-COPY --from=zlib --chown=0:0 /usr/local/cloudflare-zlib /usr/local/cloudflare-zlib
 
 <% if (docker_base == 'cloud') { %>
 COPY --from=builder --chown=0:0 /opt /opt
 <% } %>
 
 ENV PATH /usr/share/elasticsearch/bin:\$PATH
-ENV ES_ZLIB_PATH /usr/local/cloudflare-zlib/lib
 
 COPY ${bin_dir}/docker-entrypoint.sh /usr/local/bin/docker-entrypoint.sh
 

distribution/src/bin/elasticsearch

@@ -52,14 +52,6 @@ if [ -z "$LIBFFI_TMPDIR" ]; then
   export LIBFFI_TMPDIR
 fi
 
-if [ -n "$ES_ZLIB_PATH" ]; then
-  if [ ! -d "$ES_ZLIB_PATH" ]; then
-    echo "zlib path specified in ES_ZLIB_PATH does not exist or is not a directory: $ES_ZLIB_PATH" >&2
-    exit 1
-  fi
-  export LD_LIBRARY_PATH="$ES_ZLIB_PATH:$LD_LIBRARY_PATH"
-fi
-
 # get keystore password before setting java options to avoid
 # conflicting GC configurations for the keystore tools
 unset KEYSTORE_PASSWORD

docs/changelog/84680.yaml

@@ -0,0 +1,5 @@
+pr: 84680
+summary: Remove use of Cloudflare zlib
+area: Packaging
+type: bug
+issues: []

qa/os/src/test/java/org/elasticsearch/packaging/test/DockerTests.java

@@ -413,17 +413,6 @@ public void test050BasicApiTests() throws Exception {
         runElasticsearchTestsAsElastic(PASSWORD);
     }
 
-    /**
-     * Check that the JDK uses the Cloudflare zlib, instead of the default one.
-     */
-    public void test060JavaUsesCloudflareZlib() {
-        waitForElasticsearch(installation, "elastic", PASSWORD);
-
-        final String output = sh.run("bash -c 'pmap -p $(pidof java)'").stdout();
-
-        assertThat("Expected java to be using cloudflare-zlib", output, containsString("cloudflare-zlib"));
-    }
-
     /**
      * Check that the default config can be overridden using a bind mount, and that env vars are respected
      */