Revert "Merge pull request #29683 from vespa-engine/revert-29678-jonmv/reapply-zk-3.9.1"

This reverts commit c8ece8b229362c7bf725e4433ef4fec86024cd29, reversing
changes made to d42b67f0fe821d122548a345f27fda7f9c9c9d10.

4 files changed, 82 insertions, 0 deletions

diff --git a/zookeeper-common/OWNERS b/zookeeper-common/OWNERS
new file mode 100644
index 00000000000..d0a102ecbf4
--- /dev/null
+++ b/zookeeper-common/OWNERS
@@ -0,0 +1 @@
+jonmv
diff --git a/zookeeper-common/README.md b/zookeeper-common/README.md
new file mode 100644
index 00000000000..f0c7cee342d
--- /dev/null
+++ b/zookeeper-common/README.md
@@ -0,0 +1,4 @@
+<!-- Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root. -->
+# zookeeper-common
+
+Shared configuration logic for ZooKeeper
diff --git a/zookeeper-common/pom.xml b/zookeeper-common/pom.xml
new file mode 100644
index 00000000000..2c8ed8fe476
--- /dev/null
+++ b/zookeeper-common/pom.xml
@@ -0,0 +1,51 @@
+<?xml version="1.0"?>
+<!-- Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root. -->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <parent>
+    <groupId>com.yahoo.vespa</groupId>
+    <artifactId>parent</artifactId>
+    <version>8-SNAPSHOT</version>
+    <relativePath>../parent/pom.xml</relativePath>
+  </parent>
+  <artifactId>zookeeper-common</artifactId>
+  <packaging>jar</packaging>
+  <version>8-SNAPSHOT</version>
+
+  <dependencies>
+
+    <dependency>
+      <groupId>com.yahoo.vespa</groupId>
+      <artifactId>security-utils</artifactId>
+      <version>${project.version}</version>
+      <scope>provided</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>com.yahoo.vespa</groupId>
+      <artifactId>defaults</artifactId>
+      <version>${project.version}</version>
+      <scope>provided</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-api</artifactId>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-engine</artifactId>
+      <scope>test</scope>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+      </plugin>
+    </plugins>
+  </build>
+</project>
diff --git a/zookeeper-common/src/main/java/com/yahoo/vespa/zookeeper/tls/VespaZookeeperTlsContextUtils.java b/zookeeper-common/src/main/java/com/yahoo/vespa/zookeeper/tls/VespaZookeeperTlsContextUtils.java
new file mode 100644
index 00000000000..78de6c61e17
--- /dev/null
+++ b/zookeeper-common/src/main/java/com/yahoo/vespa/zookeeper/tls/VespaZookeeperTlsContextUtils.java
@@ -0,0 +1,26 @@
+package com.yahoo.vespa.zookeeper.tls;
+
+import com.yahoo.security.tls.ConfigFileBasedTlsContext;
+import com.yahoo.security.tls.TlsContext;
+import com.yahoo.security.tls.TransportSecurityUtils;
+import com.yahoo.vespa.defaults.Defaults;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Optional;
+
+/**
+ * @author jonmv
+ */
+public class VespaZookeeperTlsContextUtils {
+
+    private static final Path ZOOKEEPER_TLS_CONFIG_FILE = Path.of(Defaults.getDefaults().underVespaHome("var/zookeeper/conf/tls.conf.json"));
+    private static final TlsContext tlsContext = Files.exists(ZOOKEEPER_TLS_CONFIG_FILE)
+                                                 ? new ConfigFileBasedTlsContext(ZOOKEEPER_TLS_CONFIG_FILE, TransportSecurityUtils.getInsecureAuthorizationMode())
+                                                 : TransportSecurityUtils.getSystemTlsContext().orElse(null);
+
+    public static Optional<TlsContext> tlsContext() {
+        return Optional.ofNullable(tlsContext);
+    }
+
+}