Add sample for session resiliency

.gitignore

@@ -21,3 +21,5 @@ osgi/felix-cache/
 *.code-workspace
 dependency-reduced-pom.xml
 /enterprise/tls-rbac-demo/keymaterial/
+
+**/licensekey.env

spring/pom.xml

@@ -58,14 +58,10 @@
         <module>spring-boot-caching-jcache</module>
         <module>spring-boot-session-replication-spring-session-hazelcast</module>
         <module>spring-session-servlet</module>
+        <module>resilient-sessions</module>
     </modules>
 
     <dependencies>
-        <dependency>
-            <groupId>com.hazelcast.samples</groupId>
-            <artifactId>helper</artifactId>
-            <version>${project.version}</version>
-        </dependency>
         <dependency>
             <groupId>com.hazelcast</groupId>
             <artifactId>hazelcast</artifactId>

spring/resilient-sessions/README.md

@@ -0,0 +1,7 @@
+# Resilient web sessions example
+
+This example is associated with blog post.
+
+You can go to `docker` folder, create `licensekey.env` with `HZ_LICENSEKEY=<your key here>` and then start cluster using `docker-compose up`.
+
+After that, you can run `Main` class.

spring/resilient-sessions/docker/conf-lon/config.yml

@@ -0,0 +1,32 @@
+hazelcast:
+  cluster-name: london-cluster
+  network:
+    port:
+      port-count: 20
+      auto-increment: true
+      port:
+        5701
+    join:
+      multicast:
+        enabled: false
+      tcp-ip:
+        enabled: true
+        member-list:
+          - london-cluster-1
+  wan-replication:
+    replicate-to-nyc:
+      batch-publisher:
+        nycPublisher:
+          cluster-name: nyc-cluster
+          target-endpoints: "nyc-cluster-1:5701"
+  map:
+    shopSessions:
+      wan-replication-ref:
+        replicate-to-nyc:
+          merge-policy-class-name: PutIfAbsentMergePolicy
+      backup-count: 1
+      # because we are modifying IMap's config not via sessionMapConfigCustomizer, we need to add the index manually
+      indexes:
+        - type: HASH
+          attributes:
+            - "principalName"

spring/resilient-sessions/docker/conf-newyork/config.yml

@@ -0,0 +1,32 @@
+hazelcast:
+  cluster-name: nyc-cluster
+  network:
+    port:
+      port-count: 20
+      auto-increment: true
+      port:
+        5701
+    join:
+      multicast:
+        enabled: false
+      tcp-ip:
+        enabled: true
+        member-list:
+          - nyc-cluster-1
+  wan-replication:
+    replicate-to-lon:
+      batch-publisher:
+        lonPublisher:
+          cluster-name: london-cluster
+          target-endpoints: "london-cluster-1:5701"
+  map:
+    shopSessions:
+      wan-replication-ref:
+        replicate-to-lon:
+          merge-policy-class-name: PutIfAbsentMergePolicy
+      backup-count: 1
+      # because we are modifying IMap's config not via sessionMapConfigCustomizer, we need to add the index manually
+      indexes:
+        - type: HASH
+          attributes:
+            - "principalName"

spring/resilient-sessions/docker/docker-compose.yml

@@ -0,0 +1,33 @@
+name: resilient-sessions
+
+services:
+  london-cluster:
+    image: hazelcast/hazelcast-enterprise:latest
+    hostname: london-cluster-1
+    ports:
+      - "5701:5701"
+    volumes:
+      - ./conf-lon:/opt/hazelcast/config
+    env_file:
+      - licensekey.env
+    environment:
+      - HAZELCAST_CONFIG=/opt/hazelcast/config/config.yml
+
+  nyc-cluster:
+    image: hazelcast/hazelcast-enterprise:latest
+    hostname: nyc-cluster-1
+    ports:
+      - "5702:5701"
+    volumes:
+      - ./conf-newyork:/opt/hazelcast/config
+    env_file:
+      - licensekey.env
+    environment:
+      - HAZELCAST_CONFIG=/opt/hazelcast/config/config.yml
+
+  management-center:
+    image: hazelcast/management-center:latest
+    ports:
+      - "8180:8080"
+    env_file:
+      - licensekey.env

spring/resilient-sessions/pom.xml

@@ -0,0 +1,97 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<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/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>resilient-sessions-blog</artifactId>
+    <parent>
+        <groupId>com.hazelcast.samples</groupId>
+        <artifactId>spring</artifactId>
+        <version>0.1-SNAPSHOT</version>
+    </parent>
+
+    <properties>
+        <spring.version>7.0.2</spring.version>
+        <spring-boot.version>4.0.0</spring-boot.version>
+
+        <!-- needed for checkstyle/findbugs -->
+        <main.basedir>${project.parent.parent.basedir}</main.basedir>
+    </properties>
+
+    <repositories>
+        <repository>
+            <id>Hazelcast Private Snapshot Repository</id>
+            <url>https://repository.hazelcast.com/snapshot/</url>
+            <releases>
+                <enabled>false</enabled>
+            </releases>
+        </repository>
+        <repository>
+            <id>Hazelcast Private Release Repository</id>
+            <url>https://repository.hazelcast.com/release/</url>
+            <snapshots>
+                <enabled>false</enabled>
+            </snapshots>
+        </repository>
+    </repositories>
+
+    <dependencies>
+        <!-- TODO update post-release -->
+        <dependency>
+            <groupId>com.hazelcast.spring</groupId>
+            <artifactId>hazelcast-spring-session</artifactId>
+            <version>4.0.0-RC1</version>
+            <exclusions>
+                <exclusion>
+                    <groupId>com.hazelcast</groupId>
+                    <artifactId>hazelcast</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+        <dependency>
+            <groupId>com.hazelcast</groupId>
+            <artifactId>hazelcast-enterprise</artifactId>
+            <version>${hazelcast.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.hazelcast</groupId>
+            <artifactId>hazelcast-spring</artifactId>
+            <version>${hazelcast.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-webmvc</artifactId>
+            <version>${spring-boot.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-hazelcast</artifactId>
+            <version>${spring-boot.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.jspecify</groupId>
+            <artifactId>jspecify</artifactId>
+            <version>1.0.0</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.security</groupId>
+            <artifactId>spring-security-web</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.security</groupId>
+            <artifactId>spring-security-core</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.security</groupId>
+            <artifactId>spring-security-config</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
+    </dependencies>
+
+</project>