Feature: implement GUI interface (#21)

* fix: fixed bugs

* fix: fixed bugs

* fix: fixed bugs

* feature: implemented external API interface in GUI

* fix: fixed bugs

* fix: fixed bugs

* fix: fixed bugs

* feature: improved diagnostics metrics

* fix: fixed bugs

Makefile

@@ -29,7 +29,9 @@ lint: ## Run Apache Spotless linter
 
 .PHONY: create-local-client
 create-local-client: ## Create ResourceTracker local directory for client
-	@mkdir -p $(HOME)/.repoachiever/config
+.PHONY: create-local-client
+create-local-client: ## Create ResourceTracker local directory for client
+	@mkdir -p $(HOME)/.repoachiever/config/swap
 
 .PHONY: create-local-api-server
 create-local-api-server: ## Create ResourceTracker local directory for API Server

api-server/src/main/java/com/repoachiever/dto/ClusterAllocationDto.java

@@ -3,6 +3,7 @@
 import com.repoachiever.model.LocationsUnit;
 import lombok.AllArgsConstructor;
 import lombok.Getter;
+import lombok.Setter;
 
 import java.util.List;
 
@@ -17,6 +18,12 @@ public class ClusterAllocationDto {
      */
     private String name;
 
+    /**
+     * Represents lock state of RepoAchiever Cluster allocation.
+     */
+    @Setter
+    private Boolean locked;
+
     /**
      * Represents workspace unit key used to target RepoAchiever Cluster results.
      */

api-server/src/main/java/com/repoachiever/entity/common/ConfigEntity.java

@@ -82,21 +82,6 @@ public String toString() {
     @JsonProperty("content")
     public Content content;
 
-    /**
-     * Represents RepoAchiever API Server configuration used for database setup.
-     */
-    @Getter
-    public static class Database {
-        @NotNull
-        @JsonProperty("re-init")
-        public Boolean reInit;
-    }
-
-    @Valid
-    @NotNull
-    @JsonProperty("database")
-    public Database database;
-
     /**
      * Represents RepoAchiever API Server configuration used for diagnostics.
      */

api-server/src/main/java/com/repoachiever/repository/facade/RepositoryFacade.java

@@ -103,57 +103,6 @@ public List<RepositoryContentLocationUnitDto> retrieveLocations(
         return result;
     }
 
-    /**
-     * Checks if content location is present in content repository with the help of the given properties.
-     *
-     * @param location    given content location.
-     * @param provider    given content provider.
-     * @param credentials given content credentials.
-     * @return result of the check.
-     * @throws ContentValidationFailureException if content validation fails.
-     */
-    public Boolean isContentLocationValid(
-            String location, Provider provider, CredentialsFieldsFull credentials) throws ContentValidationFailureException {
-        ProviderEntity rawProvider;
-
-        try {
-            rawProvider = providerRepository.findByName(provider.toString());
-        } catch (RepositoryOperationFailureException e) {
-            throw new ContentValidationFailureException(e.getMessage());
-        }
-
-        Optional<String> rawCredentials = RepositoryConfigurationHelper.getExternalCredentials(
-                provider, credentials.getExternal());
-
-        try {
-            if (!secretRepository.isPresentBySessionAndCredentials(
-                    credentials.getInternal().getId(), rawCredentials)) {
-                return false;
-            }
-        } catch (RepositoryOperationFailureException e) {
-            throw new ContentValidationFailureException(e.getMessage());
-        }
-
-        SecretEntity secret;
-
-        try {
-            secret = secretRepository.findBySessionAndCredentials(
-                    credentials.getInternal().getId(),
-                    rawCredentials);
-        } catch (RepositoryOperationFailureException e) {
-            throw new ContentValidationFailureException(e.getMessage());
-        }
-
-        try {
-            return contentRepository
-                    .findByProviderAndSecret(rawProvider.getId(), secret.getId())
-                    .stream()
-                    .anyMatch(element -> Objects.equals(element.getLocation(), location));
-        } catch (RepositoryOperationFailureException e) {
-            throw new ContentValidationFailureException(e);
-        }
-    }
-
     /**
      * Retrieves all the data from content repository in a form of content applications.
      *

api-server/src/main/java/com/repoachiever/resource/communication/ApiServerCommunicationResource.java

@@ -55,13 +55,19 @@ public ApiServerCommunicationResource() throws RemoteException {
     @Override
     public void performRawContentUpload(
             String workspaceUnitKey, String location, String name, RemoteInputStream content) throws RemoteException {
+        telemetryService.increaseRawContentUploadAmount();
+
         StateService.getCommunicationGuard().lock();
 
         InputStream contentRaw;
 
         try {
             contentRaw = RemoteInputStreamClient.wrap(content);
         } catch (IOException e) {
+            StateService.getCommunicationGuard().unlock();
+
+            telemetryService.decreaseRawContentUploadAmount();
+
             throw new RuntimeException(e);
         }
 
@@ -70,10 +76,14 @@ public void performRawContentUpload(
         } catch (RawContentCreationFailureException e) {
             StateService.getCommunicationGuard().unlock();
 
+            telemetryService.decreaseRawContentUploadAmount();
+
             throw new RemoteException(e.getMessage());
         }
 
         StateService.getCommunicationGuard().unlock();
+
+        telemetryService.decreaseRawContentUploadAmount();
     }
 
     /**
@@ -105,10 +115,16 @@ public Boolean retrieveRawContentPresent(String workspaceUnitKey, String locatio
     @Override
     public void performAdditionalContentUpload(
             String workspaceUnitKey, String location, String name, String data) throws RemoteException {
+        telemetryService.increaseAdditionalContentUploadAmount();
+
         StateService.getCommunicationGuard().lock();
 
         Map<String, String> rawData = JsonToAdditionalContentDataConverter.convert(data);
         if (Objects.isNull(rawData)) {
+            StateService.getCommunicationGuard().unlock();
+
+            telemetryService.decreaseAdditionalContentUploadAmount();
+
             throw new RemoteException();
         }
 
@@ -124,10 +140,14 @@ public void performAdditionalContentUpload(
         } catch (AdditionalContentCreationFailureException e) {
             StateService.getCommunicationGuard().unlock();
 
+            telemetryService.decreaseAdditionalContentUploadAmount();
+
             throw new RemoteException(e.getMessage());
         }
 
         StateService.getCommunicationGuard().unlock();
+
+        telemetryService.decreaseAdditionalContentUploadAmount();
     }
 
     /**
@@ -161,6 +181,37 @@ public void performLogsTransfer(String name, String message) throws RemoteExcept
         logger.info(String.format("Transferred logs(instance: %s): %s", name, message));
     }
 
+    /**
+     * @see IApiServerCommunicationService
+     */
+    @Override
+    public void performDownloadTelemetryIncrease() throws RemoteException {
+        telemetryService.increaseClusterDownloadAmount();
+    }
+
+    /**
+     * @see IApiServerCommunicationService
+     */
+    @Override
+    public void performDownloadTelemetryDecrease() throws RemoteException {
+        telemetryService.decreaseClusterDownloadAmount();
+    }
+
+    /**
+     * @see IApiServerCommunicationService
+     */
+    @Override
+    public void performLockClusterAllocation(String name) throws RemoteException {
+    }
+
+    /**
+     * @see IApiServerCommunicationService
+     */
+    @Override
+    public Boolean retrieveClusterAllocationLocked(String name) throws RemoteException {
+        return false;
+    }
+
     /**
      * @see IApiServerCommunicationService
      */

api-server/src/main/java/com/repoachiever/service/cluster/common/ClusterConfigurationHelper.java

@@ -8,7 +8,7 @@
  */
 public class ClusterConfigurationHelper {
     private final static ScheduledExecutorService scheduledExecutorService =
-            Executors.newScheduledThreadPool(2);
+            Executors.newScheduledThreadPool(0, Thread.ofVirtual().factory());
 
     /**
      * Composes name for RepoAchiever Cluster using pre-defined prefix and UUID.
@@ -31,7 +31,7 @@ public static String getName(String prefix) {
     public static Boolean waitForStart(Callable<Boolean> callback, Integer frequency, Integer timeout) {
         CountDownLatch waiter = new CountDownLatch(1);
 
-        ScheduledFuture<?> awaitTask = scheduledExecutorService.scheduleAtFixedRate(() -> {
+        ScheduledFuture<?> awaitTask = scheduledExecutorService.scheduleWithFixedDelay(() -> {
             try {
                 if (callback.call()) {
                     waiter.countDown();