file based session service

Author: alexcheng1982

Justfile

@@ -0,0 +1,4 @@
+#!/usr/bin/env just --justfile
+
+run-code-format:
+    mvn com.spotify.fmt:fmt-maven-plugin:format

artifact/file/pom.xml

@@ -10,6 +10,7 @@
   </parent>
 
   <artifactId>artifact-file</artifactId>
+  <name>Artifact :: File</name>
 
   <properties>
     <maven.compiler.source>17</maven.compiler.source>

artifact/file/src/main/java/com/javaaidev/adk/artifact/file/FileBasedArtifactService.java

@@ -13,6 +13,7 @@
 import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Objects;
 import java.util.Optional;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -24,12 +25,16 @@ public class FileBasedArtifactService implements BaseArtifactService {
   private final Path root;
 
   public FileBasedArtifactService(Path root) {
-    this.root = root;
-    try {
-      Files.createDirectories(root);
-    } catch (IOException e) {
-      LOGGER.error("Failed to create artifacts directory", e);
+    Objects.requireNonNull(root, "root path cannot be null");
+    if (!Files.exists(root)) {
+      try {
+        Files.createDirectories(root);
+      } catch (IOException e) {
+        LOGGER.error("Failed to create artifacts directory", e);
+      }
     }
+    this.root = root.normalize().toAbsolutePath();
+    LOGGER.info("Artifacts saved to {}", this.root);
   }
 
   @Override
@@ -140,7 +145,5 @@ private boolean fileHasUserNamespace(String filename) {
     return filename != null && filename.startsWith("user:");
   }
 
-  record PathAndVersion(Path path, Integer version) {
-
-  }
+  record PathAndVersion(Path path, Integer version) {}
 }

artifact/file/src/test/java/com/javaaidev/adk/artifact/file/FileBasedArtifactServiceTest.java

@@ -1,6 +1,5 @@
 package com.javaaidev.adk.artifact.file;
 
-
 import static org.assertj.core.api.Assertions.assertThat;
 
 import com.google.genai.types.Part;

artifact/pom.xml

@@ -10,6 +10,7 @@
   </parent>
 
   <artifactId>artifact</artifactId>
+  <name>Artifact</name>
   <packaging>pom</packaging>
   <modules>
     <module>file</module>

pom.xml

@@ -43,6 +43,8 @@
 
   <modules>
     <module>artifact</module>
+    <module>session</module>
+    <module>session/file</module>
   </modules>
 
   <properties>
@@ -60,6 +62,11 @@
         <artifactId>google-adk</artifactId>
         <version>${adk.version}</version>
       </dependency>
+      <dependency>
+        <groupId>ch.qos.logback</groupId>
+        <artifactId>logback-classic</artifactId>
+        <version>1.5.22</version>
+      </dependency>
       <dependency>
         <groupId>org.junit.jupiter</groupId>
         <artifactId>junit-jupiter-api</artifactId>
@@ -75,6 +82,30 @@
     </dependencies>
   </dependencyManagement>
 
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>com.spotify.fmt</groupId>
+        <artifactId>fmt-maven-plugin</artifactId>
+        <version>2.29</version>
+        <dependencies>
+          <dependency>
+            <groupId>com.google.googlejavaformat</groupId>
+            <artifactId>google-java-format</artifactId>
+            <version>1.33.0</version>
+          </dependency>
+        </dependencies>
+        <executions>
+          <execution>
+            <goals>
+              <goal>format</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+
   <profiles>
     <profile>
       <id>publish</id>

session/file/pom.xml

@@ -0,0 +1,42 @@
+<?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>
+  <parent>
+    <groupId>com.javaaidev.adk</groupId>
+    <artifactId>adk-extra</artifactId>
+    <version>0.1.0</version>
+    <relativePath>../../pom.xml</relativePath>
+  </parent>
+
+  <artifactId>session-file</artifactId>
+  <name>Session :: File</name>
+
+  <properties>
+    <maven.compiler.source>17</maven.compiler.source>
+    <maven.compiler.target>17</maven.compiler.target>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>com.google.adk</groupId>
+      <artifactId>google-adk</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-api</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>org.assertj</groupId>
+      <artifactId>assertj-core</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>ch.qos.logback</groupId>
+      <artifactId>logback-classic</artifactId>
+      <scope>test</scope>
+    </dependency>
+  </dependencies>
+
+</project>