write software versions file if it does not exist

bubble-server/src/main/java/bubble/server/BubbleConfiguration.java

@@ -52,9 +52,7 @@ import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
 import java.beans.Transient;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.InputStream;
+import java.io.*;
 import java.util.*;
 import java.util.concurrent.atomic.AtomicReference;
 import java.util.stream.Collectors;
@@ -185,6 +183,16 @@ public class BubbleConfiguration extends PgRestServerConfiguration
         }
     }
 
+    public void saveSoftwareVersions (Properties softwareVersions) {
+        if (!SOFTWARE_VERSIONS_FILE.exists()) {
+            try (OutputStream out = new FileOutputStream(SOFTWARE_VERSIONS_FILE)) {
+                softwareVersions.store(out, null);
+            } catch (Exception e) {
+                log.error("saveSoftwareVersions: "+shortError(e));
+            }
+        }
+    }
+
     @Setter private String localStorageDir = DEFAULT_LOCAL_STORAGE_DIR;
     public String getLocalStorageDir () { return empty(localStorageDir) ? DEFAULT_LOCAL_STORAGE_DIR : localStorageDir; }
 

bubble-server/src/main/java/bubble/service/packer/PackerJob.java

@@ -295,6 +295,7 @@ public class PackerJob implements Callable<List<PackerImage>> {
     private void writeBubbleVersions(TempDir tempDir, Map<String, String> versions) {
         final File varsDir = mkdirOrDie(abs(tempDir) + "/roles/"+ROLE_BUBBLE+"/vars");
         final StringBuilder b = new StringBuilder();
+        final Properties softwareProps = new Properties();
         for (Map.Entry<String, String> var : versions.entrySet()) {
             final String roleName = var.getKey();
             final String version = var.getValue().trim();
@@ -302,8 +303,11 @@ public class PackerJob implements Callable<List<PackerImage>> {
             final String hash = packerService.getSoftwareHash(roleName, version);
             b.append(roleBase).append("_version : '").append(version).append("'\n")
                     .append(roleBase).append("_sha : '").append(hash).append("'\n");
+            softwareProps.setProperty(roleBase+"_version", version);
+            softwareProps.setProperty(roleBase+"_sha", hash);
         }
         FileUtil.toFileOrDie(new File(varsDir, "main.yml"), b.toString());
+        configuration.saveSoftwareVersions(softwareProps);
     }
 
     private Map<String, String> getSoftwareVersion(String roleName, TempDir tempDir) throws IOException {

bubble-server/src/main/java/bubble/service/packer/PackerService.java

@@ -165,7 +165,6 @@ public class PackerService {
             case ROLE_DNSCRYPT: return "";
             default: return die("getSoftwareSuffix: unrecognized roleName: "+roleName);
         }
-
     }
 
 }