Allow for the default download URL to be overridden

README.md

@@ -23,7 +23,7 @@ Optional
 ## Clone
 
 ```
-git clone https://github.com/pacphi/cf-get-service-details.git
+git clone https://github.com/pacphi/cf-service-inventory-report.git
 ```
 
 ## How to configure
@@ -57,6 +57,27 @@ At a minimum you should supply values for the following keys
 * `mail.from` - originator email address 
 * `mail.recipients` - email addresses that will be sent an email with CSV attachments
 
+### to override the default download URL
+
+On application start-up, a versioned Mongo executable is downloaded from a default location (addressable from the public internet).  If you would like to download the executable from an alternate location and/or select an alternate version, add the following:
+
+* `spring.mongodb.embedded.verson` - version of the Mongo executable (e.g., `3.4.15`)
+* `spring.mongodb.embedded.download.path` - the path to the parent directory hosting OS-specific sub-directories and version(s) of Mongo executables (e.g., `https://fastdl.mongodb.org/`)
+* `spring.mongodb.embedded.download.alternate` - this is a boolean property and must be set to true to activate alternate download URL
+
+As an example, the following
+
+```
+spring:
+  mongodb:
+    embedded:
+      version: 3.4.15
+      download:
+        path: https://fastdl.mongodb.org/
+        alternate: true
+```
+
+would download the Mongo executable from `https://fastdl.mongodb.org/osx/mongodb-osx-x86_64-3.4.15.tgz` when the app is running on a Mac OSX host.
 
 ## How to Build
 

build.gradle

@@ -1,6 +1,6 @@
 buildscript {
     ext { 
-        springBootVersion = '2.0.2.RELEASE' 
+        springBootVersion = '2.0.3.RELEASE' 
     }
     repositories { 
         mavenCentral() 
@@ -23,6 +23,10 @@ repositories {
     mavenCentral() 
 }
 
+bootRun {
+  // support passing -Dsystem.property=value to bootRun task
+  systemProperties = System.properties
+}
 
 dependencies {
     compileOnly('org.projectlombok:lombok:1.18.0')
@@ -33,7 +37,7 @@ dependencies {
     compile('org.springframework.boot:spring-boot-starter-mail')
     compile('com.sendgrid:sendgrid-java:4.2.1')
     compile('org.springframework.boot:spring-boot-starter-data-mongodb-reactive')
-    runtime('de.flapdoodle.embed:de.flapdoodle.embed.mongo')
+    compile('de.flapdoodle.embed:de.flapdoodle.embed.mongo:2.1.1')
     compile('org.cloudfoundry:cloudfoundry-client-reactor:3.10.0.RELEASE')
     compile('org.cloudfoundry:cloudfoundry-operations:3.10.0.RELEASE')
     compile('io.projectreactor:reactor-core:3.1.7.RELEASE')

src/main/java/io/pivotal/cfapp/MongoConfig.java

@@ -1,7 +1,10 @@
 package io.pivotal.cfapp;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.boot.autoconfigure.AutoConfigureAfter;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 import org.springframework.boot.autoconfigure.data.mongo.MongoDataAutoConfiguration;
 import org.springframework.boot.autoconfigure.mongo.MongoAutoConfiguration;
 import org.springframework.boot.autoconfigure.mongo.embedded.EmbeddedMongoAutoConfiguration;
@@ -17,6 +20,19 @@
 
 import com.mongodb.reactivestreams.client.MongoClient;
 import com.mongodb.reactivestreams.client.MongoClients;
+
+import de.flapdoodle.embed.mongo.Command;
+import de.flapdoodle.embed.mongo.config.DownloadConfigBuilder;
+import de.flapdoodle.embed.mongo.config.ExtractedArtifactStoreBuilder;
+import de.flapdoodle.embed.mongo.config.RuntimeConfigBuilder;
+import de.flapdoodle.embed.process.config.IRuntimeConfig;
+import de.flapdoodle.embed.process.config.io.ProcessOutput;
+import de.flapdoodle.embed.process.config.store.IDownloadConfig;
+import de.flapdoodle.embed.process.io.Processors;
+import de.flapdoodle.embed.process.io.Slf4jLevel;
+import de.flapdoodle.embed.process.io.progress.Slf4jProgressListener;
+import de.flapdoodle.embed.process.store.IArtifactStore;
+import io.pivotal.cfapp.config.AdditionalEmbeddedMongoProperties;
 
 
 @SpringBootApplication(exclude = { MongoAutoConfiguration.class, MongoDataAutoConfiguration.class })
@@ -54,4 +70,32 @@ protected String getDatabaseName() {
         return "cf-service-inventory";
     }
 
+    @ConditionalOnProperty(prefix="spring.mongodb.embedded.download", name = "alternate", havingValue = "true")
+    @Bean
+    IRuntimeConfig embeddedMongoRuntimeConfig(AdditionalEmbeddedMongoProperties settings) {
+    	Command command = Command.MongoD;
+    	Logger logger = LoggerFactory
+				.getLogger(getClass().getPackage().getName() + ".EmbeddedMongo");
+		ProcessOutput processOutput = new ProcessOutput(
+				Processors.logTo(logger, Slf4jLevel.INFO),
+				Processors.logTo(logger, Slf4jLevel.ERROR), Processors.named(
+						"[console>]", Processors.logTo(logger, Slf4jLevel.DEBUG)));
+    	IDownloadConfig downloadConfig = 
+    			new DownloadConfigBuilder()
+    					.defaultsForCommand(command)
+    					.downloadPath(settings.getPath())
+    					.progressListener(new Slf4jProgressListener(logger))
+						.build();
+    	IArtifactStore artifactStore = 
+    			new ExtractedArtifactStoreBuilder()
+    					.defaults(command)
+    					.download(downloadConfig)
+    					.build();
+    	return 
+    			new RuntimeConfigBuilder()
+    					.defaultsWithLogger(command, logger)
+    					.processOutput(processOutput)
+    					.artifactStore(artifactStore)
+    					.build();
+    }
 }

src/main/java/io/pivotal/cfapp/config/AdditionalEmbeddedMongoProperties.java

@@ -0,0 +1,15 @@
+package io.pivotal.cfapp.config;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.context.annotation.Configuration;
+
+import lombok.Data;
+
+@Data
+@Configuration
+@ConfigurationProperties(prefix = "spring.mongodb.embedded.download")
+public class AdditionalEmbeddedMongoProperties {
+
+	private String path;
+
+}

src/main/resources/application.yml

@@ -45,7 +45,11 @@ mail:
 #  - recipient_account
   subject: "PCF Service Inventory Report"
 
-
+logging:
+  level:
+    de.flapdoodle.embed.mongo: INFO
+    org.springframework.boot: INFO
+    com.sendgrid: DEBUG
 
 # Options are: none, java-mail or sendgrid    
 notification: