migrate sdnr features to sulfur

fix sdnr code for sulfur

Issue-ID: CCSDK-3692
Signed-off-by: Michael Dürre <michael.duerre@highstreet-technologies.com>
Change-Id: I0a62ade424bb978222e7ce6450215fb327f957b7
Signed-off-by: Michael Dürre <michael.duerre@highstreet-technologies.com>

4 files changed, 388 insertions, 115 deletions

diff --git a/sdnr/wt/devicemanager-onap/onf14/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/onf14/dom/impl/dataprovider/Onf14DomToInternalDataModel.java b/sdnr/wt/devicemanager-onap/onf14/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/onf14/dom/impl/dataprovider/Onf14DomToInternalDataModel.java
index 8a75bbc11..2a931378f 100644
--- a/sdnr/wt/devicemanager-onap/onf14/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/onf14/dom/impl/dataprovider/Onf14DomToInternalDataModel.java
+++ b/sdnr/wt/devicemanager-onap/onf14/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/onf14/dom/impl/dataprovider/Onf14DomToInternalDataModel.java
@@ -2,8 +2,11 @@ package org.onap.ccsdk.features.sdnr.wt.devicemanager.onf14.dom.impl.dataprovide
 
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Objects;
+import java.util.Set;
+
 import org.onap.ccsdk.features.sdnr.wt.devicemanager.onf14.dom.impl.util.Onf14DMDOMUtility;
 import org.onap.ccsdk.features.sdnr.wt.devicemanager.onf14.dom.impl.util.Onf14DevicemanagerQNames;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.data.provider.rev201110.Inventory;
@@ -35,7 +38,7 @@ public class Onf14DomToInternalDataModel {
         inventoryBuilder.setUuid(Onf14DMDOMUtility.getUuidFromEquipment(currentEq));
         inventoryBuilder.setParentUuid(parentUuid);
 
-        List<String> containedHolderKeyList = new ArrayList<>();
+        Set<String> containedHolderKeyList = new HashSet<>();
         MapNode containedHolderMap = (MapNode) currentEq
                 .childByArg(new NodeIdentifier(Onf14DevicemanagerQNames.CORE_MODEL_CC_EQPT_CONTAINED_HOLDER));
         if (containedHolderMap != null) {
diff --git a/sdnr/wt/devicemanager-onap/onf14/provider/src/test/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/onf14/util/Onf14DomTestUtils.java b/sdnr/wt/devicemanager-onap/onf14/provider/src/test/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/onf14/util/Onf14DomTestUtils.java
index ad79a5c43..6dc9b50b5 100644
--- a/sdnr/wt/devicemanager-onap/onf14/provider/src/test/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/onf14/util/Onf14DomTestUtils.java
+++ b/sdnr/wt/devicemanager-onap/onf14/provider/src/test/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/onf14/util/Onf14DomTestUtils.java
@@ -82,7 +82,7 @@ public class Onf14DomTestUtils {
 
 
     public static NormalizedNode getNormalizedNodeFromJson() throws IOException, URISyntaxException {
-        schemaContext = TestYangParserUtil.parseYangResourceDirectory("/");
+        schemaContext = YangParserTestUtils.parseYangResourceDirectory("/");
         lhotkaCodecFactory = JSONCodecFactorySupplier.DRAFT_LHOTKA_NETMOD_YANG_JSON_02.getShared(schemaContext);
         streamAsString =
                 loadTextFile(new File(Onf14DomTestUtils.class.getResource("/ControlConstruct-data-test.json").toURI()));
@@ -105,7 +105,7 @@ public class Onf14DomTestUtils {
 
     public static NormalizedNode getNormalizedNodeFromXML()
             throws XMLStreamException, URISyntaxException, IOException, SAXException {
-        schemaContext = TestYangParserUtil.parseYangResourceDirectory("/");
+        schemaContext = YangParserTestUtils.parseYangResourceDirectory("/");
         hwContainerSchema = Inference.ofDataTreePath(schemaContext, CORE_MODEL_CONTROL_CONSTRUCT_CONTAINER);
         final InputStream resourceAsStream =
                 Onf14DomTestUtils.class.getResourceAsStream("/ControlConstruct-data-test.xml");
diff --git a/sdnr/wt/devicemanager-onap/onf14/provider/src/test/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/onf14/util/TestYangParserUtil.java b/sdnr/wt/devicemanager-onap/onf14/provider/src/test/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/onf14/util/TestYangParserUtil.java
deleted file mode 100644
index a0cfa6760..000000000
--- a/sdnr/wt/devicemanager-onap/onf14/provider/src/test/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/onf14/util/TestYangParserUtil.java
+++ /dev/null
@@ -1,112 +0,0 @@
-/*
- * ============LICENSE_START=======================================================
- * ONAP : ccsdk features
- * ================================================================================
- * Copyright (C) 2022 highstreet technologies GmbH 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.onap.ccsdk.features.sdnr.wt.devicemanager.onf14.util;
-
-import java.io.File;
-import java.io.FileFilter;
-import java.io.IOException;
-import java.net.URI;
-import java.net.URISyntaxException;
-import java.util.Arrays;
-import java.util.Collection;
-import java.util.Iterator;
-import java.util.ServiceLoader;
-import java.util.Set;
-import java.util.stream.Collectors;
-
-import org.eclipse.jdt.annotation.NonNull;
-import org.opendaylight.yangtools.yang.common.QName;
-import org.opendaylight.yangtools.yang.common.YangConstants;
-import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
-import org.opendaylight.yangtools.yang.model.repo.api.SchemaSourceRepresentation;
-import org.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource;
-import org.opendaylight.yangtools.yang.parser.api.YangParser;
-import org.opendaylight.yangtools.yang.parser.api.YangParserConfiguration;
-import org.opendaylight.yangtools.yang.parser.api.YangParserException;
-import org.opendaylight.yangtools.yang.parser.api.YangParserFactory;
-import org.opendaylight.yangtools.yang.parser.api.YangSyntaxErrorException;
-
-public final class TestYangParserUtil {
-
-	private static final FileFilter YANG_FILE_FILTER = file -> {
-		final String name = file.getName();
-		return name.endsWith(YangConstants.RFC6020_YANG_FILE_EXTENSION) && file.isFile();
-	};
-
-	private static final @NonNull YangParserFactory PARSER_FACTORY;
-
-	static {
-		final Iterator<@NonNull YangParserFactory> it = ServiceLoader.load(YangParserFactory.class).iterator();
-		if (!it.hasNext()) {
-			throw new IllegalStateException("No YangParserFactory found");
-		}
-		PARSER_FACTORY = it.next();
-	}
-
-	public static EffectiveModelContext parseYangFiles(final YangParserConfiguration config, final File... files) {
-		return parseYangFiles(config, Arrays.asList(files));
-	}
-
-	public static EffectiveModelContext parseYangFiles(final YangParserConfiguration config,
-			final Collection<File> files) {
-		return parseSources(config, files.stream().map(YangTextSchemaSource::forFile).collect(Collectors.toList()));
-	}
-
-	public static EffectiveModelContext parseYangResourceDirectory(final String resourcePath) {
-		return parseYangResourceDirectory(resourcePath, YangParserConfiguration.DEFAULT);
-	}
-
-	public static EffectiveModelContext parseYangResourceDirectory(final String resourcePath,
-			final YangParserConfiguration config) {
-		final URI directoryPath;
-		try {
-			directoryPath = TestYangParserUtil.class.getResource(resourcePath).toURI();
-		} catch (URISyntaxException e) {
-			throw new IllegalArgumentException("Failed to open resource " + resourcePath, e);
-		}
-		return parseYangFiles(config, new File(directoryPath).listFiles(YANG_FILE_FILTER));
-	}
-
-	public static EffectiveModelContext parseYangSources(final YangParserConfiguration config,
-			final Set<QName> supportedFeatures, final YangTextSchemaSource... sources) {
-		return parseSources(config, Arrays.asList(sources));
-	}
-
-	public static EffectiveModelContext parseSources(final YangParserConfiguration config,
-			final Collection<? extends SchemaSourceRepresentation> sources) {
-		final YangParser parser = PARSER_FACTORY.createParser(config);
-
-		try {
-			parser.addSources(sources);
-		} catch (YangSyntaxErrorException e) {
-			throw new IllegalArgumentException("Malformed source", e);
-		} catch (IOException e) {
-			throw new IllegalArgumentException("Failed to read a source", e);
-		}
-
-		try {
-			return parser.buildEffectiveModel();
-		} catch (YangParserException e) {
-			throw new IllegalStateException("Failed to assemble SchemaContext", e);
-		}
-	}
-}
diff --git a/sdnr/wt/devicemanager-onap/onf14/provider/src/test/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/onf14/util/YangParserTestUtils.java b/sdnr/wt/devicemanager-onap/onf14/provider/src/test/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/onf14/util/YangParserTestUtils.java
new file mode 100644
index 000000000..ee20dccae
--- /dev/null
+++ b/sdnr/wt/devicemanager-onap/onf14/provider/src/test/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/onf14/util/YangParserTestUtils.java
@@ -0,0 +1,382 @@
+/*
+ * Copyright (c) 2016 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.onap.ccsdk.features.sdnr.wt.devicemanager.onf14.util;
+
+import com.google.common.annotations.Beta;
+import java.io.File;
+import java.io.FileFilter;
+import java.io.IOException;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Locale;
+import java.util.ServiceLoader;
+import java.util.Set;
+import java.util.stream.Collectors;
+import org.eclipse.jdt.annotation.NonNull;
+import org.opendaylight.yangtools.yang.common.QName;
+import org.opendaylight.yangtools.yang.common.YangConstants;
+import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
+import org.opendaylight.yangtools.yang.parser.api.YangParser;
+import org.opendaylight.yangtools.yang.parser.api.YangParserConfiguration;
+import org.opendaylight.yangtools.yang.parser.api.YangParserException;
+import org.opendaylight.yangtools.yang.parser.api.YangParserFactory;
+import org.opendaylight.yangtools.yang.parser.api.YangSyntaxErrorException;
+import org.opendaylight.yangtools.yang.model.repo.api.SchemaSourceRepresentation;
+import org.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource;
+import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
+
+/**
+ * Utility class which provides convenience methods for producing effective schema context based on the supplied
+ * yang/yin sources or paths to these sources.
+ */
+@Beta
+public final class YangParserTestUtils {
+
+    private static final FileFilter YANG_FILE_FILTER = file -> {
+        // Locale keeps SpotBugs happy. It should not matter that much anyway.
+        final String name = file.getName().toLowerCase(Locale.ENGLISH);
+        return name.endsWith(YangConstants.RFC6020_YANG_FILE_EXTENSION) && file.isFile();
+    };
+
+    private static final @NonNull YangParserFactory PARSER_FACTORY;
+
+    static {
+        final Iterator<@NonNull YangParserFactory> it = ServiceLoader.load(YangParserFactory.class).iterator();
+        if (!it.hasNext()) {
+            throw new IllegalStateException("No YangParserFactory found");
+        }
+        PARSER_FACTORY = it.next();
+    }
+
+    private YangParserTestUtils() {
+        // Hidden on purpose
+    }
+
+    /**
+     * Creates a new effective schema context containing the specified YANG source. Statement parser mode is set to
+     * default mode and all YANG features are supported.
+     *
+     * @param resource relative path to the YANG file to be parsed
+     *
+     * @return effective schema context
+     */
+    public static EffectiveModelContext parseYangResource(final String resource) {
+        return parseYangResource(resource, YangParserConfiguration.DEFAULT);
+    }
+
+    /**
+     * Creates a new effective schema context containing the specified YANG source. All YANG features are supported.
+     *
+     * @param resource relative path to the YANG file to be parsed
+     * @param parserMode mode of statement parser
+     * @return effective schema context
+     */
+    public static EffectiveModelContext parseYangResource(final String resource, final YangParserConfiguration config) {
+        return parseYangResource(resource, config, null);
+    }
+
+    /**
+     * Creates a new effective schema context containing the specified YANG source. Statement parser mode is set to
+     * default mode.
+     *
+     * @param resource relative path to the YANG file to be parsed
+     * @param supportedFeatures set of supported features based on which all if-feature statements in the parsed YANG
+     *                          model are resolved
+     * @return effective schema context
+     */
+    public static EffectiveModelContext parseYangResource(final String resource, final Set<QName> supportedFeatures) {
+        return parseYangResource(resource, YangParserConfiguration.DEFAULT, supportedFeatures);
+    }
+
+    /**
+     * Creates a new effective schema context containing the specified YANG source.
+     *
+     * @param resource relative path to the YANG file to be parsed
+     * @param supportedFeatures set of supported features based on which all if-feature statements in the parsed YANG
+     *                          model are resolved
+     * @param parserMode mode of statement parser
+     * @return effective schema context
+     */
+    public static EffectiveModelContext parseYangResource(final String resource, final YangParserConfiguration config,
+            final Set<QName> supportedFeatures) {
+        final YangTextSchemaSource source = YangTextSchemaSource.forResource(YangParserTestUtils.class, resource);
+        return parseYangSources(config, supportedFeatures, source);
+    }
+
+    /**
+     * Creates a new effective schema context containing the specified YANG sources. Statement parser mode is set to
+     * default mode and all YANG features are supported.
+     *
+     * @param files YANG files to be parsed
+     * @return effective schema context
+     */
+    public static EffectiveModelContext parseYangFiles(final File... files) {
+        return parseYangFiles(Arrays.asList(files));
+    }
+
+    /**
+     * Creates a new effective schema context containing the specified YANG sources. Statement parser mode is set to
+     * default mode and all YANG features are supported.
+     *
+     * @param files collection of YANG files to be parsed
+     * @return effective schema context
+     */
+    public static EffectiveModelContext parseYangFiles(final Collection<File> files) {
+        return parseYangFiles(YangParserConfiguration.DEFAULT, files);
+    }
+
+    /**
+     * Creates a new effective schema context containing the specified YANG sources. Statement parser mode is set to
+     * default mode.
+     *
+     * @param supportedFeatures set of supported features based on which all if-feature statements in the parsed YANG
+     *                          models are resolved
+     * @param files YANG files to be parsed
+     * @return effective schema context
+     */
+    public static EffectiveModelContext parseYangFiles(final Set<QName> supportedFeatures, final File... files) {
+        return parseYangFiles(supportedFeatures, Arrays.asList(files));
+    }
+
+    public static EffectiveModelContext parseYangFiles(final Set<QName> supportedFeatures,
+            final Collection<File> files) {
+        return parseYangFiles(supportedFeatures, YangParserConfiguration.DEFAULT, files.stream().map(e->e.toPath()).collect(Collectors.toList()));
+    }
+
+    /**
+     * Creates a new effective schema context containing the specified YANG sources. All YANG features are supported.
+     *
+     * @param parserMode mode of statement parser
+     * @param files YANG files to be parsed
+     * @return effective schema context
+     */
+    public static EffectiveModelContext parseYangFiles(final YangParserConfiguration config, final File... files) {
+        return parseYangFiles(config, Arrays.asList(files));
+    }
+
+    /**
+     * Creates a new effective schema context containing the specified YANG sources. All YANG features are supported.
+     *
+     * @param parserMode mode of statement parser
+     * @param files collection of YANG files to be parsed
+     * @return effective schema context
+     */
+    public static EffectiveModelContext parseYangFiles(final YangParserConfiguration config,
+            final Collection<File> files) {
+        return parseYangFiles(null, config, files.stream().map(e->e.toPath()).collect(Collectors.toList()));
+    }
+
+    /**
+     * Creates a new effective schema context containing the specified YANG sources.
+     *
+     * @param supportedFeatures set of supported features based on which all if-feature statements in the parsed YANG
+     *                          models are resolved
+     * @param parserMode mode of statement parser
+     * @param files YANG files to be parsed
+     * @return effective schema context
+     */
+    public static EffectiveModelContext parseYangFiles(final Set<QName> supportedFeatures,
+    		final YangParserConfiguration config, final Path... files) {
+        return parseYangFiles(supportedFeatures, config, Arrays.asList(files));
+    }
+
+    /**
+     * Creates a new effective schema context containing the specified YANG sources.
+     *
+     * @param supportedFeatures set of supported features based on which all if-feature statements in the parsed YANG
+     *                          models are resolved
+     * @param parserMode mode of statement parser
+     * @param files YANG files to be parsed
+     * @return effective schema context
+     */
+    public static EffectiveModelContext parseYangFiles(final Set<QName> supportedFeatures,
+    		final YangParserConfiguration config, final Collection<Path> files) {
+        return parseSources(config, supportedFeatures,
+            files.stream().map(YangTextSchemaSource::forPath).collect(Collectors.toList()));
+    }
+
+    /**
+     * Creates a new effective schema context containing the specified YANG sources. Statement parser mode is set to
+     * default mode and all YANG features are supported.
+     *
+     * @param resourcePath relative path to the directory with YANG files to be parsed
+     * @return effective schema context
+     */
+    public static EffectiveModelContext parseYangResourceDirectory(final String resourcePath) {
+        return parseYangResourceDirectory(resourcePath, YangParserConfiguration.DEFAULT);
+    }
+
+    /**
+     * Creates a new effective schema context containing the specified YANG sources. All YANG features are supported.
+     *
+     * @param resourcePath relative path to the directory with YANG files to be parsed
+     * @param parserMode mode of statement parser
+     * @return effective schema context
+     */
+    public static EffectiveModelContext parseYangResourceDirectory(final String resourcePath,
+    		final YangParserConfiguration config) {
+        return parseYangResourceDirectory(resourcePath, null, config);
+    }
+
+    /**
+     * Creates a new effective schema context containing the specified YANG sources. Statement parser mode is set to
+     * default mode.
+     *
+     * @param resourcePath relative path to the directory with YANG files to be parsed
+     * @param supportedFeatures set of supported features based on which all if-feature statements in the parsed YANG
+     *                          models are resolved
+     * @return effective schema context
+     */
+    public static EffectiveModelContext parseYangResourceDirectory(final String resourcePath,
+            final Set<QName> supportedFeatures) {
+        return parseYangResourceDirectory(resourcePath, supportedFeatures, YangParserConfiguration.DEFAULT);
+    }
+
+    /**
+     * Creates a new effective schema context containing the specified YANG sources.
+     *
+     * @param resourcePath relative path to the directory with YANG files to be parsed
+     * @param supportedFeatures set of supported features based on which all if-feature statements in the parsed YANG
+     *                          models are resolved
+     * @param parserMode mode of statement parser
+     * @return effective schema context
+     */
+    @SuppressFBWarnings(value = "NP_NULL_ON_SOME_PATH_FROM_RETURN_VALUE", justification = "Wrong inferent on listFiles")
+    public static EffectiveModelContext parseYangResourceDirectory(final String resourcePath,
+            final Set<QName> supportedFeatures, final YangParserConfiguration config) {
+        final URI directoryPath;
+        try {
+            directoryPath = YangParserTestUtils.class.getResource(resourcePath).toURI();
+        } catch (URISyntaxException e) {
+            throw new IllegalArgumentException("Failed to open resource " + resourcePath, e);
+        }
+        File[] files = new File(directoryPath).listFiles(YANG_FILE_FILTER);
+        return parseYangFiles(supportedFeatures, config, Arrays.asList(files).stream().map(e->e.toPath()).collect(Collectors.toList()));
+    }
+
+    /**
+     * Creates a new effective schema context containing the specified YANG sources. Statement parser mode is set to
+     * default mode and all YANG features are supported.
+     *
+     * @param clazz Resource lookup base
+     * @param resources Resource names to be looked up
+     * @return effective schema context
+     */
+    public static EffectiveModelContext parseYangResources(final Class<?> clazz, final String... resources) {
+        return parseYangResources(clazz, Arrays.asList(resources));
+    }
+
+    public static EffectiveModelContext parseYangResources(final Class<?> clazz, final Collection<String> resources) {
+        final List<YangTextSchemaSource> sources = new ArrayList<>(resources.size());
+        for (final String r : resources) {
+            sources.add(YangTextSchemaSource.forResource(clazz, r));
+        }
+        return parseSources(YangParserConfiguration.DEFAULT, null, sources);
+    }
+
+    /**
+     * Creates a new effective schema context containing the specified YANG sources. Statement parser mode is set to
+     * default mode.
+     *
+     * @param yangDirs relative paths to the directories containing YANG files to be parsed
+     * @param yangFiles relative paths to the YANG files to be parsed
+     * @param supportedFeatures set of supported features based on which all if-feature statements in the parsed YANG
+     *                          models are resolved
+     * @return effective schema context
+     */
+    public static EffectiveModelContext parseYangResources(final List<String> yangDirs, final List<String> yangFiles,
+            final Set<QName> supportedFeatures) {
+        return parseYangResources(yangDirs, yangFiles, supportedFeatures, YangParserConfiguration.DEFAULT);
+    }
+
+    /**
+     * Creates a new effective schema context containing the specified YANG sources. All YANG features are supported.
+     *
+     * @param yangResourceDirs relative paths to the directories containing YANG files to be parsed
+     * @param yangResources relative paths to the YANG files to be parsed
+     * @param statementParserMode mode of statement parser
+     * @return effective schema context
+     */
+    public static EffectiveModelContext parseYangResources(final List<String> yangResourceDirs,
+            final List<String> yangResources, final YangParserConfiguration config) {
+        return parseYangResources(yangResourceDirs, yangResources, null, config);
+    }
+
+    /**
+     * Creates a new effective schema context containing the specified YANG sources.
+     *
+     * @param yangResourceDirs relative paths to the directories containing YANG files to be parsed
+     * @param yangResources relative paths to the YANG files to be parsed
+     * @param supportedFeatures set of supported features based on which all if-feature statements in the parsed YANG
+     *                          models are resolved
+     * @param statementParserMode mode of statement parser
+     * @return effective schema context
+     */
+    public static EffectiveModelContext parseYangResources(final List<String> yangResourceDirs,
+            final List<String> yangResources, final Set<QName> supportedFeatures,
+            final YangParserConfiguration config) {
+        final List<File> allYangFiles = new ArrayList<>();
+        for (final String yangDir : yangResourceDirs) {
+            allYangFiles.addAll(getYangFiles(yangDir));
+        }
+
+        for (final String yangFile : yangResources) {
+            try {
+                allYangFiles.add(new File(YangParserTestUtils.class.getResource(yangFile).toURI()));
+            } catch (URISyntaxException e) {
+                throw new IllegalArgumentException("Invalid resource " + yangFile, e);
+            }
+        }
+
+        return parseYangFiles(supportedFeatures, config, allYangFiles.stream().map(e->e.toPath()).collect(Collectors.toList()));
+    }
+
+    public static EffectiveModelContext parseYangSources(final YangParserConfiguration config,
+            final Set<QName> supportedFeatures, final YangTextSchemaSource... sources) {
+        return parseSources(config, supportedFeatures, Arrays.asList(sources));
+    }
+
+    public static EffectiveModelContext parseSources(final YangParserConfiguration config,
+            final Set<QName> supportedFeatures, final Collection<? extends SchemaSourceRepresentation> sources) {
+        final YangParser parser = PARSER_FACTORY.createParser(config);
+        if (supportedFeatures != null) {
+            parser.setSupportedFeatures(supportedFeatures);
+        }
+
+        try {
+            parser.addSources(sources);
+        } catch (YangSyntaxErrorException e) {
+            throw new IllegalArgumentException("Malformed source", e);
+        } catch (IOException e) {
+            throw new IllegalArgumentException("Failed to read a source", e);
+        }
+
+        try {
+            return parser.buildEffectiveModel();
+        } catch (YangParserException e) {
+            throw new IllegalStateException("Failed to assemble SchemaContext", e);
+        }
+    }
+
+    @SuppressFBWarnings(value = "NP_NULL_ON_SOME_PATH_FROM_RETURN_VALUE", justification = "Wrong inferent on listFiles")
+    private static Collection<File> getYangFiles(final String resourcePath) {
+        final URI directoryPath;
+        try {
+            directoryPath = YangParserTestUtils.class.getResource(resourcePath).toURI();
+        } catch (URISyntaxException e) {
+            throw new IllegalArgumentException("Failed to open resource directory " + resourcePath, e);
+        }
+        return Arrays.asList(new File(directoryPath).listFiles(YANG_FILE_FILTER));
+    }
+}