Merge pull request #446 from ascopes/bugfix/singleton-scope

Force components to be initialised as singletons rather than prototypes (the default)

protobuf-maven-plugin/src/main/java/io/github/ascopes/protobufmavenplugin/utils/ConcurrentExecutor.java

@@ -28,6 +28,7 @@
 import java.util.stream.Collectors;
 import javax.annotation.PreDestroy;
 import javax.inject.Named;
+import javax.inject.Singleton;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 

protobuf-maven-plugin/src/main/java/io/github/ascopes/protobufmavenplugin/utils/HostSystem.java

@@ -37,15 +37,19 @@
 import java.util.stream.Stream;
 import javax.inject.Inject;
 import javax.inject.Named;
+import javax.inject.Singleton;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 /**
  * A bean that exposes information about the underlying platform and the context of the invocation.
  *
+ * <p>Unlike most beans, this can be a global singleton.
+ *
  * @author Ashley Scopes
  */
 @Named
+@Singleton  // Global singleton, shared between plugin instances potentially.
 public final class HostSystem {
 
   private static final Logger log = LoggerFactory.getLogger(HostSystem.class);