Add avaje-config-json

Signed-off-by: Mechite <[email protected]>

avaje-config-json/pom.xml

@@ -0,0 +1,82 @@
+<?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>org.avaje</groupId>
+    <artifactId>java11-oss</artifactId>
+    <version>4.4</version>
+    <relativePath/>
+  </parent>
+
+  <groupId>io.avaje</groupId>
+  <artifactId>avaje-config-json</artifactId>
+  <version>4.1-SNAPSHOT</version>
+
+  <scm>
+    <connection>scm:git:[email protected]:avaje/avaje-config.git</connection>
+    <developerConnection>scm:git:[email protected]:avaje/avaje-config.git</developerConnection>
+    <tag>HEAD</tag>
+  </scm>
+
+  <properties>
+    <snakeyaml.version>2.3</snakeyaml.version>
+    <nexus.staging.autoReleaseAfterClose>true</nexus.staging.autoReleaseAfterClose>
+    <surefire.useModulePath>false</surefire.useModulePath>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>io.avaje</groupId>
+      <artifactId>avaje-config</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>io.avaje</groupId>
+      <artifactId>avaje-jsonb</artifactId>
+      <version>2.1</version>
+    </dependency>
+
+    <dependency>
+      <groupId>io.avaje</groupId>
+      <artifactId>junit</artifactId>
+      <version>1.5</version>
+      <scope>test</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>ch.qos.logback</groupId>
+      <artifactId>logback-classic</artifactId>
+      <version>1.5.7</version>
+      <scope>test</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>io.avaje</groupId>
+      <artifactId>avaje-applog-slf4j</artifactId>
+      <version>1.0</version>
+      <scope>test</scope>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-repository-plugin</artifactId>
+        <version>2.4</version>
+      </plugin>
+      <!--      <plugin>-->
+      <!--        <groupId>org.sonatype.plugins</groupId>-->
+      <!--        <artifactId>nexus-staging-maven-plugin</artifactId>-->
+      <!--        <version>1.7.0</version>-->
+      <!--        <extensions>true</extensions>-->
+      <!--        <configuration>-->
+      <!--          <serverId>ossrh</serverId>-->
+      <!--          <nexusUrl>https://s01.oss.sonatype.org/</nexusUrl>-->
+      <!--          <autoReleaseAfterClose>${nexus.staging.autoReleaseAfterClose}</autoReleaseAfterClose>-->
+      <!--        </configuration>-->
+      <!--      </plugin>-->
+    </plugins>
+  </build>
+
+</project>

avaje-config-json/src/main/java/io/avaje/config/json/JsonParser.java

@@ -0,0 +1,41 @@
+package io.avaje.config.json;
+
+import io.avaje.config.ConfigParser;
+import io.avaje.jsonb.Jsonb;
+import io.avaje.jsonb.Types;
+import org.jspecify.annotations.NullMarked;
+
+import java.io.InputStream;
+import java.io.Reader;
+import java.util.Map;
+
+@NullMarked
+final class JsonParser implements ConfigParser {
+
+  private static final String[] extensions = {"json"};
+
+  private final Jsonb jsonb;
+
+  JsonParser() {
+    this.jsonb = Jsonb.builder()
+      .failOnUnknown(false)
+      .serializeEmpty(true)
+      .serializeNulls(true)
+      .build();
+  }
+
+  @Override
+  public String[] supportedExtensions() {
+    return extensions;
+  }
+
+  @Override
+  public Map<String, String> load(Reader reader) {
+    return (Map<String, String>) this.jsonb.type(Types.mapOf(String.class)).fromJson(reader);
+  }
+
+  @Override
+  public Map<String, String> load(InputStream is) {
+    return (Map<String, String>) this.jsonb.type(Types.mapOf(String.class)).fromJson(is);
+  }
+}

avaje-config-json/src/main/java/module-info.java

@@ -0,0 +1,10 @@
+module io.avaje.config.json {
+
+  requires io.avaje.config;
+  requires io.avaje.jsonb;
+
+  exports io.avaje.config.json;
+
+  uses io.avaje.config.ConfigExtension;
+
+}

avaje-config-json/src/test/java/io/avaje/config/json/JsonParserTest.java

@@ -0,0 +1,51 @@
+package io.avaje.config.json;
+
+import org.junit.jupiter.api.Test;
+
+import java.io.ByteArrayInputStream;
+import java.io.StringReader;
+import java.nio.charset.StandardCharsets;
+import java.util.Map;
+
+import static org.assertj.core.api.Assertions.*;
+
+public class JsonParserTest {
+
+  @Test
+  void supportedExtensions() {
+    var parser = new JsonParser();
+    assertThat(parser.supportedExtensions()).isEqualTo(new String[]{"json"});
+  }
+
+  private static String input() {
+    return "{" +
+      "\"one.key\": \"a\"," +
+      "\"one.key2\": \"b\"," +
+      "\"key3\": \"c\"" +
+    "}";
+  }
+
+  @Test
+  void load_reader() {
+    var parser = new JsonParser();
+    Map<String, String> map = parser.load(new StringReader(input()));
+
+    assertThat(map).hasSize(3);
+    assertThat(map).containsOnlyKeys("one.key", "one.key2", "key3");
+    assertThat(map).containsEntry("one.key", "a");
+    assertThat(map).containsEntry("one.key2", "b");
+    assertThat(map).containsEntry("key3", "c");
+  }
+
+  @Test
+  void load_inputStream() {
+    var parser = new JsonParser();
+    Map<String, String> map = parser.load(new ByteArrayInputStream(input().getBytes(StandardCharsets.UTF_8)));
+
+    assertThat(map).hasSize(3);
+    assertThat(map).containsOnlyKeys("one.key", "one.key2", "key3");
+    assertThat(map).containsEntry("one.key", "a");
+    assertThat(map).containsEntry("one.key2", "b");
+    assertThat(map).containsEntry("key3", "c");
+  }
+}

pom.xml

@@ -15,6 +15,7 @@
 
   <modules>
     <module>avaje-config</module>
+    <module>avaje-config-json</module>
     <module>avaje-aws-appconfig</module>
     <module>avaje-dynamic-logback</module>
   </modules>