1 files changed, 80 insertions, 0 deletions
diff --git a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/event/impl/filecarrierplugin/consumer/TextBlockReaderFactory.java b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/event/impl/filecarrierplugin/consumer/TextBlockReaderFactory.java
new file mode 100644
index 000000000..e48266634
--- /dev/null
+++ b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/event/impl/filecarrierplugin/consumer/TextBlockReaderFactory.java
@@ -0,0 +1,80 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * 
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.apex.service.engine.event.impl.filecarrierplugin.consumer;
+
+import java.io.InputStream;
+
+import org.onap.policy.apex.service.engine.event.ApexEventException;
+import org.onap.policy.apex.service.parameters.eventprotocol.EventProtocolParameters;
+import org.onap.policy.apex.service.parameters.eventprotocol.EventProtocolTextCharDelimitedParameters;
+import org.onap.policy.apex.service.parameters.eventprotocol.EventProtocolTextTokenDelimitedParameters;
+import org.slf4j.ext.XLogger;
+import org.slf4j.ext.XLoggerFactory;
+
+/**
+ * This factory creates text block readers for breaking character streams into blocks of text.
+ *
+ * @author Liam Fallon (liam.fallon@ericsson.com)
+ */
+public class TextBlockReaderFactory {
+    // The logger for this class
+    private static final XLogger LOGGER = XLoggerFactory.getXLogger(TextBlockReaderFactory.class);
+
+    /**
+     * Get a text block reader for the given event protocol.
+     *
+     * @param inputStream the input stream that will be used for reading
+     * @param eventProtocolParameters the parameters that have been specified for event protocols
+     * @return the tagged reader
+     * @throws ApexEventException On an unsupported event protocol
+     */
+    public TextBlockReader getTaggedReader(final InputStream inputStream,
+            final EventProtocolParameters eventProtocolParameters) throws ApexEventException {
+        // Check the type of event protocol we have
+        if (eventProtocolParameters instanceof EventProtocolTextCharDelimitedParameters) {
+            // We have character delimited textual input
+            final EventProtocolTextCharDelimitedParameters charDelimitedParameters =
+                    (EventProtocolTextCharDelimitedParameters) eventProtocolParameters;
+
+            // Create the text block reader
+            final TextBlockReader characterDelimitedTextBlockReader =
+                    new CharacterDelimitedTextBlockReader(charDelimitedParameters);
+            characterDelimitedTextBlockReader.init(inputStream);
+            return characterDelimitedTextBlockReader;
+        } else if (eventProtocolParameters instanceof EventProtocolTextTokenDelimitedParameters) {
+            // We have token delimited textual input
+            final EventProtocolTextTokenDelimitedParameters tokenDelimitedParameters =
+                    (EventProtocolTextTokenDelimitedParameters) eventProtocolParameters;
+
+            // Create the text block reader
+            final HeaderDelimitedTextBlockReader headerDelimitedTextBlockReader =
+                    new HeaderDelimitedTextBlockReader(tokenDelimitedParameters);
+            headerDelimitedTextBlockReader.init(inputStream);
+            return headerDelimitedTextBlockReader;
+        } else {
+            final String errorMessage =
+                    "could not create text block reader for a textual event protocol, the required type "
+                            + eventProtocolParameters.getLabel() + " is not supported";
+            LOGGER.error(errorMessage);
+            throw new ApexEventException(errorMessage);
+        }
+    }
+}