initial support for heroku deployment

closes jhipster#82

generators/heroku/index.js

@@ -0,0 +1,69 @@
+/* eslint-disable consistent-return */
+const chalk = require('chalk');
+const HerokuGenerator = require('generator-jhipster/generators/heroku');
+const constants = require('generator-jhipster/generators/generator-constants');
+
+module.exports = class extends HerokuGenerator {
+    constructor(args, opts) {
+        super(args, { fromBlueprint: true, ...opts }); // fromBlueprint variable is important
+
+        const jhContext = (this.jhipsterContext = this.options.jhipsterContext);
+
+        if (!jhContext) {
+            this.error(`This is a JHipster blueprint and should be used only like ${chalk.yellow('jhipster --blueprint micronaut')}`);
+        }
+
+        this.configOptions = jhContext.configOptions || {};
+    }
+
+    get initializing() {
+        return super._initializing();
+    }
+
+    get prompting() {
+        return super._prompting();
+    }
+
+    get configuring() {
+        return super._configuring();
+    }
+
+    get default() {
+        // Here we are not overriding this phase and hence its being handled by JHipster
+        const phaseFromJHipster = super._default();
+        const jhipsterMicronautDefaultPhaseSteps = {
+            copyHerokuFiles() {
+                if (this.abort) return;
+
+                const done = this.async();
+                this.log(chalk.bold('\nCreating Heroku deployment files'));
+
+                // this.template('bootstrap-heroku.yml.ejs', `${constants.SERVER_MAIN_RES_DIR}/config/bootstrap-heroku.yml`);
+                this.template('application-heroku.yml.ejs', `${constants.SERVER_MAIN_RES_DIR}/application-heroku.yml`);
+                this.template('Procfile.ejs', 'Procfile');
+                this.template('system.properties.ejs', 'system.properties');
+                if (this.buildTool === 'gradle') {
+                    this.template('heroku.gradle.ejs', 'gradle/heroku.gradle');
+                }
+                if (this.useOkta) {
+                    this.template('provision-okta-addon.sh.ejs', 'provision-okta-addon.sh');
+                    fs.appendFile('.gitignore', 'provision-okta-addon.sh', 'utf8', (err, data) => {
+                        this.log(`${chalk.yellow.bold('WARNING!')}Failed to add 'provision-okta-addon.sh' to .gitignore.'`);
+                    });
+                }
+
+                this.conflicter.resolve(err => {
+                    done();
+                });
+            },
+            addHerokuDependencies() {
+                // Nothing to do here right now
+            },
+        }
+        return Object.assign(phaseFromJHipster, jhipsterMicronautDefaultPhaseSteps);
+    }
+
+    get end() {
+        return super._end();
+    }
+};

generators/heroku/templates/Procfile.ejs

@@ -0,0 +1,22 @@
+<%#
+ Copyright 2013-2020 the original author or authors from the JHipster project.
+
+ This file is part of the JHipster project, see https://www.jhipster.tech/
+ for more information.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-%>
+web: java $JAVA_OPTS <% if (applicationType === 'gateway' || dynoSize === 'Free') { %>-Xmx256m<% } %> -jar <% if (buildTool === 'maven') { %>target<% } %><% if (buildTool === 'gradle') { %>build/libs<% } %>/*.jar --spring.profiles.active=prod,heroku<% if (buildTool == 'maven' && herokuDeployType == 'git') { %>,no-liquibase<% } %> --micronaut.server.port=$PORT
+<%_ if (buildTool == 'maven' && herokuDeployType == 'git' && (prodDatabaseType === 'postgresql' || prodDatabaseType === 'mysql' || prodDatabaseType === 'mariadb')) { _%>
+release: cp -R src/main/resources/config config && ./mvnw -ntp liquibase:update -Pprod,heroku
+<%_ } _%>

generators/heroku/templates/application-heroku.yml.ejs

@@ -0,0 +1,43 @@
+<%#
+ Copyright 2013-2020 the original author or authors from the JHipster project.
+
+ This file is part of the JHipster project, see https://www.jhipster.tech/
+ for more information.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-%>
+# ===================================================================
+# Micronaut configuration for the "heroku" profile.
+#
+# This configuration overrides the application.yml file.
+# ===================================================================
+
+# ===================================================================
+# Standard Micronaut configuration properties.
+# Full reference is available at:
+# https://docs.micronaut.io/latest/guide/configurationreference.html
+# ===================================================================
+
+
+
+datasources:
+  default:
+<%_ if (prodDatabaseType === 'postgresql' || prodDatabaseType === 'mysql' || prodDatabaseType === 'mariadb') { _%>
+    type: com.zaxxer.hikari.HikariDataSource
+    url: ${JDBC_DATABASE_URL}
+    username: ${JDBC_DATABASE_USERNAME}
+    password: ${JDBC_DATABASE_PASSWORD}
+    hikari:
+      maximum-pool-size: 8
+<%_ } _%>
+

generators/heroku/templates/bootstrap-heroku.yml.ejs

@@ -0,0 +1,29 @@
+<%#
+ Copyright 2013-2020 the original author or authors from the JHipster project.
+
+ This file is part of the JHipster project, see https://www.jhipster.tech/
+ for more information.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-%>
+# ===================================================================
+# Spring Cloud Config bootstrap configuration for the "heroku" profile
+# ===================================================================
+
+<%_ if (serviceDiscoveryType === 'eureka') { _%>
+spring:
+    cloud:
+        config:
+            fail-fast: true
+            uri: ${JHIPSTER_REGISTRY_URL}/config
+<%_ } _%>

generators/heroku/templates/heroku.gradle.ejs

@@ -0,0 +1,41 @@
+<%#
+ Copyright 2013-2020 the original author or authors from the JHipster project.
+
+ This file is part of the JHipster project, see https://www.jhipster.tech/
+ for more information.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-%>
+apply plugin: "com.heroku.sdk.heroku-gradle"
+
+heroku {
+  appName = "<%= herokuAppName %>"
+  buildpacks = ["heroku/jvm"]
+}
+<%_ if (herokuDeployType === 'git') { _%>
+
+// Task stage is used by Heroku, see also
+// https://devcenter.heroku.com/articles/deploying-gradle-apps-on-heroku
+// and GRADLE_TASK configuration variable.
+task stage(dependsOn: "jar") {
+}
+
+gradle.taskGraph.whenReady {taskGraph ->
+    taskGraph.afterTask() {task ->
+        if (task.getName().equals("stage") && System.getenv("DYNO") != null) {
+            delete "node_modules"
+            delete fileTree(dir: "build/libs", exclude: "*.jar")
+        }
+    }
+}
+<%_ } _%>

generators/heroku/templates/pom-profile.xml.ejs

@@ -0,0 +1,50 @@
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.liquibase</groupId>
+                        <artifactId>liquibase-maven-plugin</artifactId>
+                        <configuration combine.self="override">
+                            <changeLogFile>src/main/resources/config/liquibase/master.xml</changeLogFile>
+                            <diffChangeLogFile>src/main/resources/config/liquibase/changelog/${maven.build.timestamp}_changelog.xml</diffChangeLogFile>
+                            <driver></driver>
+                            <url>${env.JDBC_DATABASE_URL}</url>
+                            <defaultSchemaName></defaultSchemaName>
+                            <username>${env.JDBC_DATABASE_USERNAME}</username>
+                            <password>${env.JDBC_DATABASE_PASSWORD}</password>
+                            <referenceUrl>hibernate:spring:<%= packageName %>.domain?dialect=<% if (prodDatabaseType === 'mysql') { %>org.hibernate.dialect.MySQL8Dialect<% } else if (prodDatabaseType === 'mariadb') { %>org.hibernate.dialect.MariaDB103Dialect<% } else if (prodDatabaseType === 'postgresql') { %>io.github.jhipster.domain.util.FixedPostgreSQL10Dialect<% } else if (prodDatabaseType === 'h2Disk') { %>org.hibernate.dialect.H2Dialect<% } else if (prodDatabaseType === 'oracle') { %>org.hibernate.dialect.Oracle12cDialect<% } else if (prodDatabaseType === 'mssql') { %>org.hibernate.dialect.SQLServer2012Dialect<% } %>&amp;hibernate.physical_naming_strategy=org.springframework.boot.orm.jpa.hibernate.SpringPhysicalNamingStrategy&amp;hibernate.implicit_naming_strategy=org.springframework.boot.orm.jpa.hibernate.SpringImplicitNamingStrategy</referenceUrl>
+                            <verbose>true</verbose>
+                            <logging>debug</logging>
+                            <promptOnNonLocalDatabase>false</promptOnNonLocalDatabase>
+                        </configuration>
+                    </plugin>
+                    <plugin>
+                        <artifactId>maven-clean-plugin</artifactId>
+                        <version>${maven-clean-plugin.version}</version>
+                        <executions>
+                            <execution>
+                                <id>clean-artifacts</id>
+                                <phase>install</phase>
+                                <goals>
+                                    <goal>clean</goal>
+                                </goals>
+                                <configuration>
+                                    <excludeDefaultDirectories>true</excludeDefaultDirectories>
+                                    <filesets>
+                                        <fileset>
+                                            <directory>target</directory>
+                                            <excludes>
+                                                <exclude>*.jar</exclude>
+                                            </excludes>
+                                            <followSymlinks>false</followSymlinks>
+                                        </fileset>
+                                        <fileset>
+                                            <directory>node_modules</directory>
+                                            <followSymlinks>false</followSymlinks>
+                                        </fileset>
+                                    </filesets>
+                                </configuration>
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>