initial commit

.env

@@ -0,0 +1 @@
+VERSION=1.0-SNAPSHOT

.gitignore

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+/**/*.iml
+/**/.idea
+/**/target
+/**/dependency-reduced-pom.xml
+/target

db/.gitignore

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+/target

db/Dockerfile

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+FROM openjdk:11
+
+ARG version
+ADD target/test-db-${version}.jar /test-db.jar
+ENTRYPOINT ["java", "-jar", "/test-db.jar"]

db/pom.xml

@@ -0,0 +1,56 @@
+<?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/maven-v4_0_0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<parent>
+		<groupId>test</groupId>
+		<artifactId>parent</artifactId>
+		<version>${revision}${sha1}${changelist}</version>
+	</parent>
+
+	<artifactId>test-db</artifactId>
+    <packaging>jar</packaging>
+	<name>DB</name>
+
+	<properties>
+        <main.class>test.DbApp</main.class>
+    </properties>
+
+	<dependencies>
+        <dependency>
+            <groupId>test</groupId>
+            <artifactId>test-model</artifactId>
+        </dependency>
+
+        <!--BQ deps-->
+        <dependency>
+            <groupId>io.bootique.liquibase</groupId>
+            <artifactId>bootique-liquibase</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.bootique.logback</groupId>
+            <artifactId>bootique-logback</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.bootique.jdbc</groupId>
+            <artifactId>bootique-jdbc-hikaricp-instrumented</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-shade-plugin</artifactId>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-jar-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+</project>

db/src/main/java/test/DbApp.java

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+package test;
+
+import io.bootique.BQCoreModule;
+import io.bootique.BaseModule;
+import io.bootique.Bootique;
+import io.bootique.di.Binder;
+import io.bootique.meta.application.OptionMetadata;
+
+public class DbApp extends BaseModule {
+    public static void main(String[] args) {
+        Bootique.main(args);
+    }
+
+    @Override
+    public void configure(Binder binder) {
+        BQCoreModule.extend(binder)
+                .addConfig("classpath:test/db/default.yaml")
+
+                // --local
+                .addOption(OptionMetadata.builder("local", "Load configuration for local environment.").build())
+                .mapConfigResource("local", "classpath:test/db/local.yaml")
+        ;
+    }
+}

db/src/main/java/test/DbAppProvider.java

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+package test;
+
+import io.bootique.BQModuleProvider;
+
+public class DbAppProvider implements BQModuleProvider {
+    public DbAppProvider() {}
+
+    @Override
+    public DbApp module() {
+        return new DbApp();
+    }
+}

db/src/main/resources/META-INF/services/io.bootique.BQModuleProvider

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+test.DbAppProvider

db/src/main/resources/init.sql

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+-- liquibase formatted sql
+-- changeset rzen:1
+
+SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0;
+SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0;
+SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION';
+
+CREATE TABLE IF NOT EXISTS `test`.`e1` (
+    `id` INT(5) UNSIGNED NOT NULL AUTO_INCREMENT,
+    `text` TEXT NULL DEFAULT NULL,
+    `e2_id` INT(5) UNSIGNED NULL DEFAULT NULL,
+    PRIMARY KEY (`id`),
+    INDEX `fk_e2_idx` (`e2_id` ASC) VISIBLE,
+    CONSTRAINT `fk_e2`
+        FOREIGN KEY (`e2_id`)
+            REFERENCES `test`.`e2` (`id`)
+            ON DELETE NO ACTION
+            ON UPDATE NO ACTION)
+    ENGINE = InnoDB
+    DEFAULT CHARACTER SET = utf8;
+
+CREATE TABLE IF NOT EXISTS `test`.`e2` (
+    `id` INT(5) UNSIGNED NOT NULL AUTO_INCREMENT,
+    `text` TEXT NULL DEFAULT NULL,
+    `e1_id` INT(5) UNSIGNED NULL DEFAULT NULL,
+    PRIMARY KEY (`id`),
+    INDEX `fk_e1_idx` (`e1_id` ASC) VISIBLE,
+    CONSTRAINT `fk_e1`
+        FOREIGN KEY (`e1_id`)
+            REFERENCES `test`.`e1` (`id`)
+            ON DELETE NO ACTION
+            ON UPDATE NO ACTION)
+    ENGINE = InnoDB
+    DEFAULT CHARACTER SET = utf8;
+
+SET SQL_MODE=@OLD_SQL_MODE;
+SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS;
+SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS;

db/src/main/resources/master.yaml

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+databaseChangeLog:
+  - include:
+      file: classpath:init.sql

db/src/main/resources/test/db/default.yaml

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+jdbc:
+  test:
+    driverClassName: com.mysql.cj.jdbc.Driver
+    jdbcUrl: "jdbc:mysql://db:3306/test?connectTimeout=0&autoReconnect=true&useUnicode=true&characterEncoding=UTF-8"
+    username: root
+    password: test
+    minimumIdle: 1
+    maximumPoolSize: 20
+    connectionTestQuery: "select 1"
+    autoCommit: false
+
+# Liquibase Migrations Config
+liquibase:
+  datasource: test
+  changeLogs:
+    - classpath:master.yaml
+
+#  Logging
+log:
+  level: info
+  appenders:
+    - type: console
+      logFormat: '[%d{"dd/MMM/yyyy:HH:mm:ss,SSS"}] %t %X %-5p %c{1}: %m%n%ex'

db/src/main/resources/test/db/local.yaml

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+jdbc:
+  test:
+    jdbcUrl: "jdbc:mysql://192.168.10.64:33006/test?connectTimeout=0&autoReconnect=true&useUnicode=true&characterEncoding=UTF-8"

docker-compose.yaml

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+version: '3.4'
+
+volumes:
+  test-m2:
+    external: true
+
+networks:
+  backend:
+
+x-jdbc-env:
+  &jdbc-env
+  JDBC_TEST_JDBCURL: jdbc:mysql://db:3306/test?connectTimeout=0&autoReconnect=true&useUnicode=true&characterEncoding=UTF-8
+  JDBC_TEST_USERNAME: root
+  JDBC_TEST_PASSWORD: test
+
+services:
+
+  mvn-build:
+    image: maven:3-openjdk-11
+    working_dir: /usr/src/maven
+    volumes:
+      - .:/usr/src/maven
+      - test-m2:/root/.m2
+    entrypoint: mvn clean package
+
+  db:
+    image: mariadb:10
+    networks:
+      - backend
+    ports:
+      - "33006:3306"
+    environment:
+      MYSQL_ROOT_PASSWORD: test
+    labels:
+      traefik.enable: 'false'
+
+  liquibase:
+    image: test-db:1.0-SNAPSHOT
+    build:
+      context: db
+      args:
+        version: ${VERSION}
+    networks:
+      - backend
+    command: --lb-update
+
+
+  # cayenne helpers
+
+  cdbimport:
+    image: maven:3-openjdk-11
+    networks:
+      - backend
+    volumes:
+      - test-m2:/root/.m2
+      - .:/usr/src/maven
+    working_dir: /usr/src/maven
+    environment:
+      <<: *jdbc-env
+    command: mvn -f model cayenne:cdbimport
+
+  cgen:
+    image: maven:3-openjdk-11
+    volumes:
+      - test-m2:/root/.m2
+      - .:/usr/src/maven
+    working_dir: /usr/src/maven
+    environment:
+      <<: *jdbc-env
+    command: mvn -f model cayenne:cgen
+
+
+  # app services
+
+  # this shows a fail scenario
+  fail:
+    image: test-test:${VERSION}
+    build:
+      context: test
+      args:
+        version: ${VERSION}
+    networks:
+      - backend
+    depends_on:
+      - db
+      - liquibase
+    command: --fail
+
+  # this shows off a workaround
+  happy:
+    image: test-test:${VERSION}
+    build:
+      context: test
+      args:
+        version: ${VERSION}
+    networks:
+      - backend
+    depends_on:
+      - db
+      - liquibase
+    command: --happy

model/.gitignore

@@ -0,0 +1 @@
+/target

model/pom.xml

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+<?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>test</groupId>
+        <artifactId>parent</artifactId>
+        <version>${revision}${sha1}${changelist}</version>
+    </parent>
+
+    <artifactId>test-model</artifactId>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.cayenne</groupId>
+            <artifactId>cayenne-lifecycle</artifactId>
+            <version>${cayenne.version}</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+         <pluginManagement>
+            <plugins>
+                <plugin>
+                    <groupId>org.apache.cayenne.plugins</groupId>
+                    <artifactId>cayenne-maven-plugin</artifactId>
+                    <version>${cayenne.version}</version>
+                    <configuration>
+                        <map>${project.basedir}/src/main/resources/test/test.map.xml</map>
+                        <superPkg>test.cayenne.auto</superPkg>
+                        <dataSource>
+                            <driver>com.mysql.cj.jdbc.Driver</driver>
+                            <url>${env.JDBC_TEST_JDBCURL}</url>
+                            <username>root</username>
+                            <password>test</password>
+                        </dataSource>
+                        <dbImport>
+                            <defaultPackage>test.cayenne</defaultPackage>
+                            <catalog>
+                                <name>test</name>
+                                <excludeTable>databasechangelog.*</excludeTable>
+                            </catalog>
+                        </dbImport>
+                        <overwriteExisting>true</overwriteExisting>
+                        <meaningfulPk>true</meaningfulPk>
+                    </configuration>
+                    <executions>
+                        <execution>
+                            <id>default-cli</id>
+                            <goals>
+                                <!-- To perform reverse engineering, explicitly run 'mvn cayenne:cdbimport' -->
+                                <!-- To perform class generation, explicitly run 'mvn cayenne:cgen' -->
+                                <!-- Start up the modeler from the command-line 'mvn cayenne-modeler:run' -->
+                                <goal>cgen</goal>
+                            </goals>
+                        </execution>
+                    </executions>
+                    <dependencies>
+                        <!-- 3rdParty deps-->
+                        <dependency>
+                            <groupId>mysql</groupId>
+                            <artifactId>mysql-connector-java</artifactId>
+                            <version>${mysql.version}</version>
+                        </dependency>
+                    </dependencies>
+                </plugin>
+            </plugins>
+        </pluginManagement>
+    </build>
+</project>

model/src/main/java/test/cayenne/E1.java

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+package test.cayenne;
+
+import test.cayenne.auto._E1;
+
+public class E1 extends _E1 {
+
+    private static final long serialVersionUID = 1L;
+
+}

model/src/main/java/test/cayenne/E2.java

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+package test.cayenne;
+
+import test.cayenne.auto._E2;
+
+public class E2 extends _E2 {
+
+    private static final long serialVersionUID = 1L;
+
+}

model/src/main/java/test/cayenne/auto/_E1.java

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+package test.cayenne.auto;
+
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.util.List;
+
+import org.apache.cayenne.BaseDataObject;
+import org.apache.cayenne.exp.property.EntityProperty;
+import org.apache.cayenne.exp.property.ListProperty;
+import org.apache.cayenne.exp.property.PropertyFactory;
+import org.apache.cayenne.exp.property.StringProperty;
+
+import test.cayenne.E2;
+
+/**
+ * Class _E1 was generated by Cayenne.
+ * It is probably a good idea to avoid changing this class manually,
+ * since it may be overwritten next time code is regenerated.
+ * If you need to make any customizations, please use subclass.
+ */
+public abstract class _E1 extends BaseDataObject {
+
+    private static final long serialVersionUID = 1L;
+
+    public static final String ID_PK_COLUMN = "id";
+
+    public static final StringProperty<String> TEXT = PropertyFactory.createString("text", String.class);
+    public static final EntityProperty<E2> E2 = PropertyFactory.createEntity("e2", E2.class);
+    public static final ListProperty<E2> E2S = PropertyFactory.createList("e2s", E2.class);
+
+    protected String text;
+
+    protected Object e2;
+    protected Object e2s;
+
+    public void setText(String text) {
+        beforePropertyWrite("text", this.text, text);
+        this.text = text;
+    }
+
+    public String getText() {
+        beforePropertyRead("text");
+        return this.text;
+    }
+
+    public void setE2(E2 e2) {
+        setToOneTarget("e2", e2, true);
+    }
+
+    public E2 getE2() {
+        return (E2)readProperty("e2");
+    }
+
+    public void addToE2s(E2 obj) {
+        addToManyTarget("e2s", obj, true);
+    }
+
+    public void removeFromE2s(E2 obj) {
+        removeToManyTarget("e2s", obj, true);
+    }
+
+    @SuppressWarnings("unchecked")
+    public List<E2> getE2s() {
+        return (List<E2>)readProperty("e2s");
+    }
+
+    @Override
+    public Object readPropertyDirectly(String propName) {
+        if(propName == null) {
+            throw new IllegalArgumentException();
+        }
+
+        switch(propName) {
+            case "text":
+                return this.text;
+            case "e2":
+                return this.e2;
+            case "e2s":
+                return this.e2s;
+            default:
+                return super.readPropertyDirectly(propName);
+        }
+    }
+
+    @Override
+    public void writePropertyDirectly(String propName, Object val) {
+        if(propName == null) {
+            throw new IllegalArgumentException();
+        }
+
+        switch (propName) {
+            case "text":
+                this.text = (String)val;
+                break;
+            case "e2":
+                this.e2 = val;
+                break;
+            case "e2s":
+                this.e2s = val;
+                break;
+            default:
+                super.writePropertyDirectly(propName, val);
+        }
+    }
+
+    private void writeObject(ObjectOutputStream out) throws IOException {
+        writeSerialized(out);
+    }
+
+    private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {
+        readSerialized(in);
+    }
+
+    @Override
+    protected void writeState(ObjectOutputStream out) throws IOException {
+        super.writeState(out);
+        out.writeObject(this.text);
+        out.writeObject(this.e2);
+        out.writeObject(this.e2s);
+    }
+
+    @Override
+    protected void readState(ObjectInputStream in) throws IOException, ClassNotFoundException {
+        super.readState(in);
+        this.text = (String)in.readObject();
+        this.e2 = in.readObject();
+        this.e2s = in.readObject();
+    }
+
+}

model/src/main/java/test/cayenne/auto/_E2.java

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+package test.cayenne.auto;
+
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.util.List;
+
+import org.apache.cayenne.BaseDataObject;
+import org.apache.cayenne.exp.property.EntityProperty;
+import org.apache.cayenne.exp.property.ListProperty;
+import org.apache.cayenne.exp.property.PropertyFactory;
+import org.apache.cayenne.exp.property.StringProperty;
+
+import test.cayenne.E1;
+
+/**
+ * Class _E2 was generated by Cayenne.
+ * It is probably a good idea to avoid changing this class manually,
+ * since it may be overwritten next time code is regenerated.
+ * If you need to make any customizations, please use subclass.
+ */
+public abstract class _E2 extends BaseDataObject {
+
+    private static final long serialVersionUID = 1L;
+
+    public static final String ID_PK_COLUMN = "id";
+
+    public static final StringProperty<String> TEXT = PropertyFactory.createString("text", String.class);
+    public static final EntityProperty<E1> E1 = PropertyFactory.createEntity("e1", E1.class);
+    public static final ListProperty<E1> E1S = PropertyFactory.createList("e1s", E1.class);
+
+    protected String text;
+
+    protected Object e1;
+    protected Object e1s;
+
+    public void setText(String text) {
+        beforePropertyWrite("text", this.text, text);
+        this.text = text;
+    }
+
+    public String getText() {
+        beforePropertyRead("text");
+        return this.text;
+    }
+
+    public void setE1(E1 e1) {
+        setToOneTarget("e1", e1, true);
+    }
+
+    public E1 getE1() {
+        return (E1)readProperty("e1");
+    }
+
+    public void addToE1s(E1 obj) {
+        addToManyTarget("e1s", obj, true);
+    }
+
+    public void removeFromE1s(E1 obj) {
+        removeToManyTarget("e1s", obj, true);
+    }
+
+    @SuppressWarnings("unchecked")
+    public List<E1> getE1s() {
+        return (List<E1>)readProperty("e1s");
+    }
+
+    @Override
+    public Object readPropertyDirectly(String propName) {
+        if(propName == null) {
+            throw new IllegalArgumentException();
+        }
+
+        switch(propName) {
+            case "text":
+                return this.text;
+            case "e1":
+                return this.e1;
+            case "e1s":
+                return this.e1s;
+            default:
+                return super.readPropertyDirectly(propName);
+        }
+    }
+
+    @Override
+    public void writePropertyDirectly(String propName, Object val) {
+        if(propName == null) {
+            throw new IllegalArgumentException();
+        }
+
+        switch (propName) {
+            case "text":
+                this.text = (String)val;
+                break;
+            case "e1":
+                this.e1 = val;
+                break;
+            case "e1s":
+                this.e1s = val;
+                break;
+            default:
+                super.writePropertyDirectly(propName, val);
+        }
+    }
+
+    private void writeObject(ObjectOutputStream out) throws IOException {
+        writeSerialized(out);
+    }
+
+    private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {
+        readSerialized(in);
+    }
+
+    @Override
+    protected void writeState(ObjectOutputStream out) throws IOException {
+        super.writeState(out);
+        out.writeObject(this.text);
+        out.writeObject(this.e1);
+        out.writeObject(this.e1s);
+    }
+
+    @Override
+    protected void readState(ObjectInputStream in) throws IOException, ClassNotFoundException {
+        super.readState(in);
+        this.text = (String)in.readObject();
+        this.e1 = in.readObject();
+        this.e1s = in.readObject();
+    }
+
+}

model/src/main/resources/test/cayenne-test.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<domain xmlns="http://cayenne.apache.org/schema/10/domain"
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:schemaLocation="http://cayenne.apache.org/schema/10/domain https://cayenne.apache.org/schema/10/domain.xsd"
+        project-version="10">
+    <map name="test"/>
+    <node name="test-node"
+          factory="org.apache.cayenne.configuration.server.JNDIDataSourceFactory" parameters="jdbc/mysql/test">
+        <map-ref name="test"/>
+    </node>
+</domain>

model/src/main/resources/test/test.map.xml

@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+<data-map xmlns="http://cayenne.apache.org/schema/10/modelMap"
+	 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	 xsi:schemaLocation="http://cayenne.apache.org/schema/10/modelMap https://cayenne.apache.org/schema/10/modelMap.xsd"
+	 project-version="10">
+	<property name="defaultPackage" value="test.cayenne"/>
+	<property name="defaultCatalog" value="test"/>
+	<db-entity name="e1" catalog="test">
+		<db-attribute name="e2_id" type="BIGINT" length="10"/>
+		<db-attribute name="id" type="BIGINT" isPrimaryKey="true" isGenerated="true" isMandatory="true" length="10"/>
+		<db-attribute name="text" type="LONGVARCHAR" length="65535"/>
+	</db-entity>
+	<db-entity name="e2" catalog="test">
+		<db-attribute name="e1_id" type="BIGINT" length="10"/>
+		<db-attribute name="id" type="BIGINT" isPrimaryKey="true" isGenerated="true" isMandatory="true" length="10"/>
+		<db-attribute name="text" type="LONGVARCHAR" length="65535"/>
+	</db-entity>
+	<obj-entity name="E1" className="test.cayenne.E1" dbEntityName="e1">
+		<obj-attribute name="text" type="java.lang.String" db-attribute-path="text"/>
+	</obj-entity>
+	<obj-entity name="E2" className="test.cayenne.E2" dbEntityName="e2">
+		<obj-attribute name="text" type="java.lang.String" db-attribute-path="text"/>
+	</obj-entity>
+	<db-relationship name="e2" source="e1" target="e2">
+		<db-attribute-pair source="e2_id" target="id"/>
+	</db-relationship>
+	<db-relationship name="e2s" source="e1" target="e2" toMany="true">
+		<db-attribute-pair source="id" target="e1_id"/>
+	</db-relationship>
+	<db-relationship name="e1" source="e2" target="e1">
+		<db-attribute-pair source="e1_id" target="id"/>
+	</db-relationship>
+	<db-relationship name="e1s" source="e2" target="e1" toMany="true">
+		<db-attribute-pair source="id" target="e2_id"/>
+	</db-relationship>
+	<obj-relationship name="e2" source="E1" target="E2" deleteRule="Nullify" db-relationship-path="e2"/>
+	<obj-relationship name="e2s" source="E1" target="E2" deleteRule="Deny" db-relationship-path="e2s"/>
+	<obj-relationship name="e1" source="E2" target="E1" deleteRule="Nullify" db-relationship-path="e1"/>
+	<obj-relationship name="e1s" source="E2" target="E1" deleteRule="Deny" db-relationship-path="e1s"/>
+</data-map>

pom.xml

@@ -0,0 +1,131 @@
+<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>
+
+    <artifactId>parent</artifactId>
+    <groupId>test</groupId>
+    <version>${revision}${sha1}${changelist}</version>
+
+    <name>Parent</name>
+
+    <packaging>pom</packaging>
+
+    <properties>
+        <revision>1.0</revision>
+        <sha1/>
+        <changelist>-SNAPSHOT</changelist>
+
+        <bootique.version>2.0.M1</bootique.version>
+        <!-- must stay at 8.0.22 until bootique upgrades to liquibase 4.x -->
+        <!-- see https://bugs.mysql.com/bug.php?id=102302 and https://github.com/liquibase/liquibase/blob/4.4.x/liquibase-core/src/main/java/liquibase/changelog/StandardChangeLogHistoryService.java#L324 -->
+        <mysql.version>8.0.22</mysql.version>
+        <mariadb.version>3.0.2-rc</mariadb.version>
+        <cayenne.version>4.2.B1</cayenne.version>
+
+        <maven.compiler.source>8</maven.compiler.source>
+        <maven.compiler.target>8</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+
+        <main.class>Dummy</main.class>
+    </properties>
+
+    <modules>
+        <module>db</module>
+        <module>model</module>
+        <module>test</module>
+    </modules>
+
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>test</groupId>
+                <artifactId>test-model</artifactId>
+                <version>${project.version}</version>
+            </dependency>
+
+            <!-- bootique -->
+            <dependency>
+              <groupId>io.bootique.bom</groupId>
+              <artifactId>bootique-bom</artifactId>
+              <version>${bootique.version}</version>
+              <type>pom</type>
+              <scope>import</scope>
+            </dependency>
+
+            <!-- cayenne -->
+            <dependency>
+                <groupId>org.apache.cayenne</groupId>
+                <artifactId>cayenne-server</artifactId>
+                <version>${cayenne.version}</version>
+            </dependency>
+
+            <!-- mysql driver -->
+            <dependency>
+                <groupId>mysql</groupId>
+                <artifactId>mysql-connector-java</artifactId>
+                <version>${mysql.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>org.mariadb.jdbc</groupId>
+                <artifactId>mariadb-java-client</artifactId>
+                <version>${mariadb.version}</version>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <build>
+        <pluginManagement>
+            <plugins>
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-shade-plugin</artifactId>
+                    <version>3.2.1</version>
+
+                    <configuration>
+                        <createDependencyReducedPom>true</createDependencyReducedPom>
+                        <filters>
+                            <filter>
+                                <artifact>*:*</artifact>
+                                <excludes>
+                                    <exclude>META-INF/*.SF</exclude>
+                                    <exclude>META-INF/*.DSA</exclude>
+                                    <exclude>META-INF/*.RSA</exclude>
+                                </excludes>
+                            </filter>
+                        </filters>
+                    </configuration>
+                    <executions>
+                        <execution>
+                            <phase>package</phase>
+                            <goals>
+                                <goal>shade</goal>
+                            </goals>
+                            <configuration>
+                                <transformers>
+                                    <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer" />
+                                    <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+                                        <mainClass>${main.class}</mainClass>
+                                    </transformer>
+                                </transformers>
+                            </configuration>
+                        </execution>
+                    </executions>
+                </plugin>
+
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-jar-plugin</artifactId>
+                    <version>3.1.0</version>
+                    <configuration>
+                        <archive>
+                            <manifest>
+                                <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
+                            </manifest>
+                        </archive>
+                    </configuration>
+                </plugin>
+            </plugins>
+        </pluginManagement>
+    </build>
+
+</project>

run-test.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+if [ -z `docker volume ls -q | grep -i test-m2` ]; then docker volume create test-m2; fi
+docker-compose up -d db
+sleep 30s
+docker-compose run --rm mvn-build
+docker-compose build
+docker-compose run --rm fail
+docker-compose run --rm happy
+docker-compose down

test/.gitignore

@@ -0,0 +1 @@
+/target

test/Dockerfile

@@ -0,0 +1,5 @@
+FROM openjdk:11
+
+ARG version
+ADD target/test-test-${version}.jar /test-test.jar
+ENTRYPOINT ["java", "-jar", "/test-test.jar"]

test/pom.xml

@@ -0,0 +1,66 @@
+<?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>test</groupId>
+        <artifactId>parent</artifactId>
+        <version>${revision}${sha1}${changelist}</version>
+    </parent>
+
+    <artifactId>test-test</artifactId>
+
+    <properties>
+        <main.class>test.TestApp</main.class>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>test</groupId>
+            <artifactId>test-model</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>io.bootique.cayenne</groupId>
+            <artifactId>bootique-cayenne</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.bootique.agrest</groupId>
+            <artifactId>bootique-agrest</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.agrest</groupId>
+            <artifactId>agrest-engine</artifactId>
+            <version>4.7</version>
+        </dependency>
+        <dependency>
+            <groupId>io.bootique.jdbc</groupId>
+            <artifactId>bootique-jdbc-hikaricp</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.bootique.logback</groupId>
+            <artifactId>bootique-logback</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-shade-plugin</artifactId>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-jar-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

test/src/main/java/test/FailCommand.java

@@ -0,0 +1,33 @@
+package test;
+
+import io.bootique.cli.Cli;
+import io.bootique.command.CommandOutcome;
+import io.bootique.command.CommandWithMetadata;
+import io.bootique.meta.application.CommandMetadata;
+import org.apache.cayenne.ObjectContext;
+import org.apache.cayenne.configuration.server.ServerRuntime;
+
+import javax.inject.Inject;
+import javax.inject.Provider;
+
+public class FailCommand extends CommandWithMetadata {
+
+    @Inject
+    private Provider<ServerRuntime> cayenneRuntimeProvider;
+
+    @Inject
+    public FailCommand(CommandMetadata.Builder metadataBuilder) {
+        super(metadataBuilder
+                .name("fail")
+                .description("Demo of a possible issue with Cayenne.")
+                .build()
+        );
+    }
+
+    @Override
+    public CommandOutcome run(Cli cli) {
+        ObjectContext context = cayenneRuntimeProvider.get().newContext();
+        TestCase.runTest(context, true);
+        return CommandOutcome.succeeded();
+    }
+}

test/src/main/java/test/HappyCommand.java

@@ -0,0 +1,32 @@
+package test;
+
+import io.bootique.cli.Cli;
+import io.bootique.command.CommandOutcome;
+import io.bootique.command.CommandWithMetadata;
+import io.bootique.meta.application.CommandMetadata;
+import org.apache.cayenne.ObjectContext;
+import org.apache.cayenne.configuration.server.ServerRuntime;
+
+import javax.inject.Inject;
+import javax.inject.Provider;
+
+public class HappyCommand extends CommandWithMetadata {
+    @Inject
+    private Provider<ServerRuntime> cayenneRuntimeProvider;
+
+    @Inject
+    public HappyCommand(CommandMetadata.Builder metadataBuilder) {
+        super(metadataBuilder
+                .name("happy")
+                .description("Demo of a possible issue with Cayenne. This command shows a workaround.")
+                .build()
+        );
+    }
+
+    @Override
+    public CommandOutcome run(Cli cli) {
+        ObjectContext context = cayenneRuntimeProvider.get().newContext();
+        TestCase.runTest(context, false);
+        return CommandOutcome.succeeded();
+    }
+}

test/src/main/java/test/TestApp.java

@@ -0,0 +1,31 @@
+package test;
+
+import io.bootique.BQCoreModule;
+import io.bootique.BaseModule;
+import io.bootique.Bootique;
+import io.bootique.di.Binder;
+import io.bootique.meta.application.OptionMetadata;
+
+public class TestApp extends BaseModule {
+
+    public static void main(String[] args) {
+        Bootique.app(args)
+                .autoLoadModules()
+                .exec()
+                .exit();
+    }
+
+    @Override
+    public void configure(Binder binder) {
+        BQCoreModule.extend(binder)
+                .addConfig("classpath:test/default.yaml")
+                .addCommand(FailCommand.class)
+                .addCommand(HappyCommand.class)
+
+                // --local
+                .addOption(OptionMetadata.builder("local", "Load configuration for local environment.").build())
+                .mapConfigResource("local", "classpath:test/local.yaml")
+
+        ;
+    }
+}

test/src/main/java/test/TestAppProvider.java

@@ -0,0 +1,13 @@
+package test;
+
+import io.bootique.BQModuleProvider;
+
+public class TestAppProvider implements BQModuleProvider {
+
+    public TestAppProvider() {}
+
+    @Override
+    public TestApp module() {
+        return new TestApp();
+    }
+}

test/src/main/java/test/TestCase.java

@@ -0,0 +1,30 @@
+package test;
+
+import org.apache.cayenne.ObjectContext;
+import test.cayenne.E1;
+import test.cayenne.E2;
+
+public class TestCase {
+
+    public static void runTest (ObjectContext context, boolean doFail) {
+        for (int i=100; i<110; ++i) {
+            E1 e1 = context.newObject(E1.class);
+            E2 e2 = context.newObject(E2.class);
+
+            e1.setText("e1 #" + i);
+            e2.setText("e2 #" + i);
+
+            // executing this commit seems to
+            // mitigate the issue
+
+            if (!doFail) {
+                context.commitChanges();
+            }
+
+            e1.setE2(e2);
+            e2.setE1(e1);
+
+            context.commitChanges();
+        }
+    }
+}

test/src/main/resources/META-INF/services/io.bootique.BQModuleProvider

@@ -0,0 +1 @@
+test.TestAppProvider

test/src/main/resources/test/default.yaml

@@ -0,0 +1,22 @@
+# JDBC config
+jdbc:
+  test:
+    driverClassName: com.mysql.cj.jdbc.Driver
+    jdbcUrl: "jdbc:mysql://db:3306/test?connectTimeout=0&autoReconnect=true&useUnicode=true&characterEncoding=UTF-8"
+    username: root
+    password: test
+    minimumIdle: 1
+    maximumPoolSize: 20
+    connectionTestQuery: "select 1"
+    autoCommit: false
+
+cayenne:
+  configs:
+    - test/cayenne-test.xml
+  datasource: test
+
+log:
+  level: debug
+  appenders:
+    - type: console
+      logFormat: '[%d{"dd/MMM/yyyy:HH:mm:ss,SSS"}] %t %X %-5p %c{1}: %m%n%ex'

test/src/main/resources/test/local.yaml

@@ -0,0 +1,3 @@
+jdbc:
+  test:
+    jdbcUrl: "jdbc:mysql://localhost:33006/test?connectTimeout=0&autoReconnect=true&useUnicode=true&characterEncoding=UTF-8"