More work done, should be able to install MariaDb from Homebrew now

Author: abrousseau001

mariaDB4j-core/src/main/java/ch/vorburger/mariadb4j/DB.java

@@ -51,13 +51,12 @@
  * @author Michael Vorburger
  * @author Michael Seaton
  * @author Gordon Little
+ * @author Adam Brousseau
  */
 public class DB {
 
     private static final Logger logger = LoggerFactory.getLogger(DB.class);
 
-    private static final String homebrewInstallationPath = "/opt/homebrew/bin/brew";
-
     protected final DBConfiguration configuration;
 
     private File baseDir;
@@ -412,7 +411,7 @@ protected void unpackEmbeddedDb() {
         // Check for Homebrew, before doing anything else
         // If HomeBrew is not installed, then throw a runtime error, similar to how the below extraction method
         // does below for other operating systems
-        if(configuration.isMacOs() && !Util.doesExecutableExistAndIsExecutable(new File(homebrewInstallationPath)))
+        if(configuration.isMacOs() && !Util.doesExecutableExistAndIsExecutable(new File(Util.homebrewInstallationPath)))
         {
             throw new RuntimeException("Homebrew must be installed on the system before using this library");
         }
@@ -425,7 +424,7 @@ protected void unpackEmbeddedDb() {
         }
 
         // Windows, Linux, and any other supported OS can have their binaries extracted as normal
-        else if(!configuration.isMacOs()) {
+        if(!configuration.isMacOs()) {
             try {
                 Util.extractFromClasspathToFile(configuration.getBinariesClassPathLocation(), baseDir);
                 if (!configuration.isWindows()) {
@@ -439,6 +438,10 @@ else if(!configuration.isMacOs()) {
                 throw new RuntimeException("Error unpacking embedded DB", e);
             }
         }
+        else{
+            if(!Util.installMariaDbFromHomebrew())
+                throw new RuntimeException("Error installing MariaDB from Homebrew");
+        }
     }
 
     /**

mariaDB4j-core/src/main/java/ch/vorburger/mariadb4j/Util.java

@@ -22,6 +22,9 @@
 import java.io.File;
 import java.io.IOException;
 import java.net.URL;
+import java.nio.charset.StandardCharsets;
+import java.util.concurrent.TimeUnit;
+
 import org.apache.commons.io.FileUtils;
 import org.apache.commons.lang3.SystemUtils;
 import org.slf4j.Logger;
@@ -38,6 +41,10 @@
  */
 public class Util {
 
+    public static final String homebrewInstallationPath = "/opt/homebrew/bin/brew";
+
+    private static final String mariadbNotInstalledMessage = "No such keg: /opt/homebrew/Cellar/mariadb";
+
     private static final Logger logger = LoggerFactory.getLogger(Util.class);
 
     private Util() {
@@ -154,6 +161,56 @@ public static int extractFromClasspathToFile(String packagePath, File toDir) thr
         return counter;
     }
 
+    /**
+     * Method to check for the MariaDb installation on the system and then install if not installed
+     * @return @{@link boolean} representing whether MariaDb has been installed on the system
+     */
+    public static boolean installMariaDbFromHomebrew(){
+        boolean mariadbIsInstalled = false;
+
+        ProcessBuilder pb = new ProcessBuilder(homebrewInstallationPath + " list mariadb");
+        pb.redirectErrorStream(true);
+        try {
+            Process brewCheckMariadbIsInstalled = pb.start();
+            String checkOutput = new String(brewCheckMariadbIsInstalled.getInputStream().readAllBytes(), StandardCharsets.UTF_8);
+
+            if(checkOutput.contains(mariadbNotInstalledMessage)){
+                brewCheckMariadbIsInstalled.destroy();
+
+                ProcessBuilder brewInstallMariaDb = new ProcessBuilder(homebrewInstallationPath + " install mariadb");
+                brewInstallMariaDb.redirectErrorStream(true);
+
+                Process brewInstall = brewInstallMariaDb.start();
+
+                // Wait until Homebrew installs the latest MariaDb
+                do {
+                    brewInstall.waitFor(15, TimeUnit.SECONDS);
+                } while (brewInstall.isAlive());
+
+                String checkInstallOutput = new String(brewInstall.getInputStream().readAllBytes(), StandardCharsets.UTF_8);
+
+                if(checkInstallOutput.toLowerCase().contains("error")){
+                    throw new IllegalStateException("Failed to install mariadb with Homebrew - see " + checkInstallOutput);
+                }
+
+                // Cause it to clean up once it has installed
+                brewInstall.destroy();
+
+                mariadbIsInstalled = true;
+            } else{
+                mariadbIsInstalled = true;
+            }
+        } catch (IOException ioException) {
+            logger.error("Attempted to check the installation status of MariaDb and executing Homebrew failed", ioException);
+            throw new RuntimeException("Attempted to check the installation status of MariaDb and executing Homebrew failed");
+        } catch (InterruptedException interruptedException) {
+            logger.error("The thread process was interrupted while waiting for MariaDb to finish installation", interruptedException);
+            throw new RuntimeException("The thread process was interrupted while waiting for MariaDb to finish installation");
+        }
+
+        return mariadbIsInstalled;
+    }
+
     @SuppressWarnings("null") private static void tryN(int n, long msToWait, Procedure<IOException> procedure) throws IOException {
         IOException lastIOException = null;
         int numAttempts = 0;