Parse Tosca.meta file

Change-Id: I50521fb62999322c99b39024097ab5729f3c1580
Issue-ID: SDC-2151
Signed-off-by: kooper <sergey.sachkov@est.tech>

2 files changed, 148 insertions, 0 deletions

diff --git a/openecomp-be/lib/openecomp-tosca-lib/src/main/java/org/openecomp/sdc/tosca/csar/OnboardingToscaMetadata.java b/openecomp-be/lib/openecomp-tosca-lib/src/main/java/org/openecomp/sdc/tosca/csar/OnboardingToscaMetadata.java
new file mode 100644
index 0000000000..b4d7f84ca4
--- /dev/null
+++ b/openecomp-be/lib/openecomp-tosca-lib/src/main/java/org/openecomp/sdc/tosca/csar/OnboardingToscaMetadata.java
@@ -0,0 +1,102 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * Copyright (C) 2018 AT&T Intellectual Property. 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.tosca.csar;
+
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableMap;
+import org.openecomp.sdc.common.errors.Messages;
+import org.openecomp.sdc.datatypes.error.ErrorLevel;
+import org.openecomp.sdc.datatypes.error.ErrorMessage;
+import java.io.InputStream;
+import java.io.IOException;
+import org.apache.commons.io.IOUtils;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import static org.openecomp.core.validation.errors.ErrorMessagesFormatBuilder.getErrorWithParameters;
+import static org.openecomp.sdc.tosca.csar.CSARConstants.SEPERATOR_MF_ATTRIBUTE;
+import static org.openecomp.sdc.tosca.csar.CSARConstants.TOSCA_META_ENTRY_DEFINITIONS;
+
+public class OnboardingToscaMetadata implements ToscaMetadata{
+
+  private Map<String, String> metaEntries;
+  private List<ErrorMessage> errors;
+
+  private OnboardingToscaMetadata(){
+    metaEntries = new HashMap<>();
+    errors = new ArrayList<>();
+  }
+
+  /**
+   * Method parses input stream of meta file, only block_0 is parsed, the rest of metadata ignored
+   * @param st meta file input stream
+   * @return OnboardingToscaMetadata instance
+   * @throws IOException
+   */
+  public static ToscaMetadata parseToscaMetadataFile(InputStream st) throws IOException {
+    OnboardingToscaMetadata meta = new OnboardingToscaMetadata();
+    List<String> metadataLines = IOUtils.readLines(st, "utf-8");
+    for (String line : metadataLines) {
+      line = line.trim();
+      if (line.isEmpty()) {
+        return meta;
+      }
+      String[] entry = line.split(SEPERATOR_MF_ATTRIBUTE);
+      //No empty keys allowed, no empty values allowed
+      if (entry.length < 2 || entry[0].isEmpty()) {
+        meta.errors.add(new ErrorMessage(ErrorLevel.ERROR, getErrorWithParameters(
+                Messages.METADATA_INVALID_ENTRY_DEFINITIONS.getErrorMessage(), line)));
+        //want to get all error lines in meta file block_0, no breaking loop
+      } else {
+        meta.metaEntries.put(entry[0].trim(), entry[1].trim());
+      }
+    }
+
+    if (!meta.metaEntries.containsKey(TOSCA_META_ENTRY_DEFINITIONS)) {
+      meta.errors.add(new ErrorMessage(ErrorLevel.ERROR, getErrorWithParameters(
+              Messages.METADATA_NO_ENTRY_DEFINITIONS.getErrorMessage())));
+    }
+    return meta;
+  }
+
+  @Override  public boolean isValid(){
+    return errors.isEmpty();
+  }
+
+  @Override
+  public List<ErrorMessage> getErrors() {
+    return  ImmutableList.copyOf(errors);
+  }
+
+
+  @Override
+  public Map<String, String> getMetaEntries() {
+    if (!isValid()){
+      return Collections.emptyMap();
+    }
+    return ImmutableMap.copyOf(metaEntries);
+  }
+}
+
diff --git a/openecomp-be/lib/openecomp-tosca-lib/src/main/java/org/openecomp/sdc/tosca/csar/ToscaMetadata.java b/openecomp-be/lib/openecomp-tosca-lib/src/main/java/org/openecomp/sdc/tosca/csar/ToscaMetadata.java
new file mode 100644
index 0000000000..a26e5195a5
--- /dev/null
+++ b/openecomp-be/lib/openecomp-tosca-lib/src/main/java/org/openecomp/sdc/tosca/csar/ToscaMetadata.java
@@ -0,0 +1,46 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * Copyright (C) 2019, Nordix Foundation. 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.tosca.csar;
+
+import org.openecomp.sdc.datatypes.error.ErrorMessage;
+
+import java.util.List;
+import java.util.Map;
+
+public interface ToscaMetadata {
+    /**
+     * checks if metadata file is valid
+     * @return
+     */
+    boolean isValid();
+
+    /**
+     * List of errors occured during manifest parsing
+     * @return
+     */
+    List<ErrorMessage> getErrors();
+
+    /**
+     * Metadata entries of block_0
+     * @return
+     */
+    Map<String, String> getMetaEntries();
+}