DOC-391: move operator-jet-job-snapshot samples into code samples

docs/modules/ROOT/examples/jet

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+../../../../jet

jet/operator-jet-job-snapshot/hz.yaml

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+apiVersion: hazelcast.com/v1alpha1
+kind: Hazelcast
+metadata:
+  name: hazelcast
+spec:
+  clusterSize: 3
+  licenseKeySecretName: hazelcast-license-key
+  jet:
+    enabled: true
+    resourceUploadEnabled: true

jet/operator-jet-job-snapshot/jet-pipelines/pom.xml

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+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xmlns="http://maven.apache.org/POM/4.0.0"
+         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>
+
+    <groupId>org.examples.jet.snapshot</groupId>
+    <artifactId>jet-pipelines</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <name>jet-pipelines</name>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
+        <hazelcast-version>5.4.0</hazelcast-version>
+        <junit-jupiter-api-version>5.8.2</junit-jupiter-api-version>
+        <maven-surefire-plugin-version>3.0.0-M7</maven-surefire-plugin-version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>com.hazelcast</groupId>
+            <artifactId>hazelcast</artifactId>
+            <version>${hazelcast-version}</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-api</artifactId>
+            <version>${junit-jupiter-api-version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>${maven-surefire-plugin-version}</version>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

jet/operator-jet-job-snapshot/jet-pipelines/src/main/java/org/examples/jet/snapshot/JobV1.java

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+package org.examples.jet.snapshot;
+
+import com.hazelcast.core.Hazelcast;
+import com.hazelcast.core.HazelcastInstance;
+import com.hazelcast.jet.pipeline.JournalInitialPosition;
+import com.hazelcast.jet.pipeline.Pipeline;
+import com.hazelcast.jet.pipeline.Sinks;
+import com.hazelcast.jet.pipeline.Sources;
+
+public class JobV1 {
+
+    public static void main(String[] args) {
+        var p = Pipeline.create();
+        var transactionSource = Sources.mapJournal("transaction", JournalInitialPosition.START_FROM_OLDEST);
+        var loggerSink = Sinks.logger();
+        p.readFrom(transactionSource)
+                .withIngestionTimestamps()
+                .setName("Emit Transactions")
+                .map(e -> {
+                    System.out.printf("The transaction '%s' is being executed in 'job-v1'\n", e.getKey());
+                    // execute the transaction
+                    return String.format("[Job V1] transaction:'%s' payload:'%s'", e.getKey(), e.getValue());
+                })
+                .setName("Apply Transactions")
+                .writeTo(loggerSink)
+                .setName("Log Transactions");
+
+        HazelcastInstance hz = Hazelcast.bootstrappedInstance();
+        hz.getJet().newJob(p);
+    }
+
+}

jet/operator-jet-job-snapshot/jet-pipelines/src/main/java/org/examples/jet/snapshot/JobV2.java

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+package org.examples.jet.snapshot;
+
+import com.hazelcast.core.Hazelcast;
+import com.hazelcast.core.HazelcastInstance;
+import com.hazelcast.jet.pipeline.JournalInitialPosition;
+import com.hazelcast.jet.pipeline.Pipeline;
+import com.hazelcast.jet.pipeline.Sinks;
+import com.hazelcast.jet.pipeline.Sources;
+
+public class JobV2 {
+
+    public static void main(String[] args) {
+        var p = Pipeline.create();
+        var transactionSource = Sources.mapJournal("transaction", JournalInitialPosition.START_FROM_OLDEST);
+        var loggerSink = Sinks.logger();
+        p.readFrom(transactionSource)
+                .withIngestionTimestamps()
+                .setName("Emit Transactions")
+                .map(e -> {
+                    System.out.printf("The transaction '%s' is being executed in 'job-v2'\n", e.getKey());
+                    // execute the transaction
+                    return String.format("[Job V2] transaction:'%s' payload:'%s'", e.getKey(), e.getValue());
+                })
+                .setName("Apply Transactions")
+                .writeTo(loggerSink)
+                .setName("Log Transactions");
+
+        HazelcastInstance hz = Hazelcast.bootstrappedInstance();
+        hz.getJet().newJob(p);
+    }
+
+}

jet/operator-jet-job-snapshot/job-v1.yaml

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+apiVersion: hazelcast.com/v1alpha1
+kind: JetJob
+metadata:
+  name: transaction-v1
+spec:
+  hazelcastResourceName: hazelcast
+  state: Running
+  jarName: jet-pipelines-1.0-SNAPSHOT.jar
+  mainClass: org.examples.jet.snapshot.JobV1
+  bucketConfig:
+    bucketURI: '<BUCKET-URI>'
+    secretName: '<SECRET-NAME>'

jet/operator-jet-job-snapshot/job-v2.yaml

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+apiVersion: hazelcast.com/v1alpha1
+kind: JetJob
+metadata:
+  name: transaction-v2
+spec:
+  hazelcastResourceName: hazelcast
+  state: Running
+  jarName: jet-pipelines-1.0-SNAPSHOT.jar
+  mainClass: org.examples.jet.snapshot.JobV2
+  initialSnapshotResourceName: snapshot-transaction
+  bucketConfig:
+    bucketURI: '<BUCKET-URI>'
+    secretName: '<SECRET-NAME>'

jet/operator-jet-job-snapshot/map.yaml

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+apiVersion: hazelcast.com/v1alpha1
+kind: Map
+metadata:
+  name: transaction
+spec:
+  hazelcastResourceName: hazelcast
+  eventJournal:
+    capacity: 9000

jet/operator-jet-job-snapshot/snapshot.yaml

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+apiVersion: hazelcast.com/v1alpha1
+kind: JetJobSnapshot
+metadata:
+  name: snapshot-transaction
+spec:
+  jetJobResourceName: transaction-v1
+  cancelJob: true