diff options
Diffstat (limited to 'common-parameters/src/main/java')
6 files changed, 428 insertions, 0 deletions
diff --git a/common-parameters/src/main/java/org/onap/policy/common/parameters/AbstractParameters.java b/common-parameters/src/main/java/org/onap/policy/common/parameters/AbstractParameters.java new file mode 100644 index 00000000..5430dfeb --- /dev/null +++ b/common-parameters/src/main/java/org/onap/policy/common/parameters/AbstractParameters.java @@ -0,0 +1,47 @@ +package org.onap.policy.common.parameters; +/* + * ============LICENSE_START======================================================= + * Copyright (C) 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========================================================= + */ + +/** + * This class defines an abstract parameter interface that acts as a base interface for all parameters in the ONAP + * Policy Framework. All parameter POJOs are subclass of the abstract parameter class and can be used with the + * {@link ParameterService}. + * + * @author Liam Fallon (liam.fallon@ericsson.com) + */ +public interface AbstractParameters { + /** + * Gets the parameter class. + * + * @return the parameter class + */ + default Class<? extends AbstractParameters> getParameterClass() { + return this.getClass(); + } + + /** + * Gets the parameter class name. + * + * @return the parameter class name + */ + default String getParameterClassName() { + return this.getClass().getCanonicalName(); + } +} diff --git a/common-parameters/src/main/java/org/onap/policy/common/parameters/ParameterException.java b/common-parameters/src/main/java/org/onap/policy/common/parameters/ParameterException.java new file mode 100644 index 00000000..129d5390 --- /dev/null +++ b/common-parameters/src/main/java/org/onap/policy/common/parameters/ParameterException.java @@ -0,0 +1,112 @@ +/*- + * ============LICENSE_START======================================================= + * Copyright (C) 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.common.parameters; + +/** + * Exception thrown oon parameter reading, validation, and check errors. + * + * @author Liam Fallon (liam.fallon@ericsson.com) + */ +public class ParameterException extends Exception { + private static final long serialVersionUID = -8507246953751956974L; + + // The object on which the exception was thrown + private final transient Object object; + + /** + * Instantiates a new parameter exception. + * + * @param message the message on the exception + */ + public ParameterException(final String message) { + this(message, null); + } + + /** + * Instantiates a new parameter exception. + * + * @param message the message on the exception + * @param object the object that the exception was thrown on + */ + public ParameterException(final String message, final Object object) { + super(message); + this.object = object; + } + + /** + * Instantiates a new parameter exception. + * + * @param message the message on the exception + * @param e the exception that caused this parameter exception + */ + public ParameterException(final String message, final Exception e) { + this(message, e, null); + } + + /** + * Instantiates a new parameter exception. + * + * @param message the message on the exception + * @param e the exception that caused this parameter exception + * @param object the object that the exception was thrown on + */ + public ParameterException(final String message, final Exception e, final Object object) { + super(message, e); + this.object = object; + } + + /** + * Get the message from this exception and its causes. + * + * @return the cascaded messages from this exception and the exceptions that caused it + */ + public String getCascadedMessage() { + return buildCascadedMessage(this); + } + + /** + * Build a cascaded message from an exception and all its nested exceptions + * + * @param throwable the top level exception + * @return cascaded message string + */ + public static String buildCascadedMessage(Throwable throwable) { + final StringBuilder builder = new StringBuilder(); + builder.append(throwable.getMessage()); + + for (Throwable t = throwable; t != null; t = t.getCause()) { + builder.append("\ncaused by: "); + builder.append(t.getMessage()); + } + + return builder.toString(); + } + + /** + * + * Get the object on which the exception was thrown. + * + * @return The object on which the exception was thrown + */ + public Object getObject() { + return object; + } +} diff --git a/common-parameters/src/main/java/org/onap/policy/common/parameters/ParameterRuntimeException.java b/common-parameters/src/main/java/org/onap/policy/common/parameters/ParameterRuntimeException.java new file mode 100644 index 00000000..4b7d5874 --- /dev/null +++ b/common-parameters/src/main/java/org/onap/policy/common/parameters/ParameterRuntimeException.java @@ -0,0 +1,93 @@ +/*- + * ============LICENSE_START======================================================= + * Copyright (C) 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.common.parameters; + +/** + * A run time exception thrown on parameter validations. + * + * @author Liam Fallon (liam.fallon@ericsson.com) + */ +public class ParameterRuntimeException extends RuntimeException { + private static final long serialVersionUID = -8507246953751956974L; + + // The object on which the exception was thrown + private final transient Object object; + + /** + * Instantiates a new parameter runtime exception. + * + * @param message the message on the exception + */ + public ParameterRuntimeException(final String message) { + this(message, null); + } + + /** + * Instantiates a new parameter runtime exception. + * + * @param message the message on the exception + * @param object the object that the exception was thrown on + */ + public ParameterRuntimeException(final String message, final Object object) { + super(message); + this.object = object; + } + + /** + * Instantiates a new parameter runtime exception. + * + * @param message the message on the exception + * @param e the exception that caused this parameter exception + */ + public ParameterRuntimeException(final String message, final Exception e) { + this(message, e, null); + } + + /** + * Instantiates a new parameter runtime exception. + * + * @param message the message on the exception + * @param e the exception that caused this parameter exception + * @param object the object that the exception was thrown on + */ + public ParameterRuntimeException(final String message, final Exception e, final Object object) { + super(message, e); + this.object = object; + } + + /** + * Get the message from this exception and its causes. + * + * @return the message of this exception and all the exceptions that caused this exception + */ + public String getCascadedMessage() { + return ParameterException.buildCascadedMessage(this); + } + + /** + * Get the object on which the exception was thrown. + * + * @return The object + */ + public Object getObject() { + return object; + } +} diff --git a/common-parameters/src/main/java/org/onap/policy/common/parameters/ParameterService.java b/common-parameters/src/main/java/org/onap/policy/common/parameters/ParameterService.java new file mode 100644 index 00000000..f411937d --- /dev/null +++ b/common-parameters/src/main/java/org/onap/policy/common/parameters/ParameterService.java @@ -0,0 +1,114 @@ +package org.onap.policy.common.parameters; +/* + * ============LICENSE_START======================================================= + * Copyright (C) 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========================================================= + */ + +import java.util.Map; +import java.util.Map.Entry; +import java.util.Set; +import java.util.concurrent.ConcurrentHashMap; + +/** + * The parameter service makes ONAP PF parameters available to all classes in a JVM. + * + * The reason for having a parameter service is to avoid having to pass parameters down long call chains in modules such + * as PDPs and editors. The parameter service makes correct and verified parameters available statically. + * + * The parameter service must be used with care because changing a parameter set anywhere in a JVM will affect all users + * of those parameters anywhere in the JVM. + * + * @author Liam Fallon (liam.fallon@ericsson.com) + */ +public abstract class ParameterService { + // The map holding the parameters + private static Map<Class<? extends AbstractParameters>, AbstractParameters> parameterMap = new ConcurrentHashMap<>(); + + /** + * This class is an abstract static class that cannot be extended. + */ + private ParameterService() { + } + + /** + * Register parameters with the parameter service. + * + * @param <P> the generic type + * @param parametersClass the class of the parameter, used to index the parameter + * @param parameters the parameters + */ + public static <P extends AbstractParameters> void registerParameters(final P parameters) { + parameterMap.put(parameters.getClass(), parameters); + } + + /** + * Remove parameters from the parameter service. + * + * @param <P> the generic type + * @param parametersClass the class of the parameter, used to index the parameter + */ + public static <P extends AbstractParameters> void deregisterParameters(final Class<P> parametersClass) { + parameterMap.remove(parametersClass); + } + + /** + * Get parameters from the parameter service. + * + * @param <P> the generic type + * @param parametersClass the class of the parameter, used to index the parameter + * @return The parameter + */ + @SuppressWarnings("unchecked") + public static <P extends AbstractParameters> P getParameters(final Class<P> parametersClass) { + final P parameter = (P) parameterMap.get(parametersClass); + + if (parameter == null) { + throw new ParameterRuntimeException( + "Parameters for " + parametersClass.getCanonicalName() + " not found in parameter service"); + } + + return parameter; + } + + /** + * Check if parameters is defined on the parameter service. + * + * @param <P> the generic type + * @param parametersClass the class of the parameter, used to index the parameter + * @return true if the parameter is defined + */ + public static <P extends AbstractParameters> boolean existsParameters(final Class<P> parametersClass) { + return parameterMap.get(parametersClass) != null; + } + + /** + * Get all the entries in the parameters map. + * + * @return The entries + */ + public static Set<Entry<Class<? extends AbstractParameters>, AbstractParameters>> getAll() { + return parameterMap.entrySet(); + } + + /** + * Clear all parameters in the parameter service. + */ + public static void clear() { + parameterMap.clear(); + } +} diff --git a/common-parameters/src/main/java/org/onap/policy/common/parameters/ParameterValidator.java b/common-parameters/src/main/java/org/onap/policy/common/parameters/ParameterValidator.java new file mode 100644 index 00000000..0d718267 --- /dev/null +++ b/common-parameters/src/main/java/org/onap/policy/common/parameters/ParameterValidator.java @@ -0,0 +1,36 @@ +/*- + * ============LICENSE_START======================================================= + * Copyright (C) 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.common.parameters; + +/** + * This interface is implemented by ONAP PF parameter classes so that they can be validated. + * + * @author Liam Fallon (liam.fallon@ericsson.com) + */ +public interface ParameterValidator { + /** + * Validate a parameter java bean, if the parameter bean is valid, an empty string is returned, + * otherwise the string gives details of the invalid parameters. + * + * @return the string with validation errors + */ + String validate(); +} diff --git a/common-parameters/src/main/java/org/onap/policy/common/parameters/package-info.java b/common-parameters/src/main/java/org/onap/policy/common/parameters/package-info.java new file mode 100644 index 00000000..7ee1f833 --- /dev/null +++ b/common-parameters/src/main/java/org/onap/policy/common/parameters/package-info.java @@ -0,0 +1,26 @@ +/*- + * ============LICENSE_START======================================================= + * Copyright (C) 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========================================================= + */ + +/** + * Provides a common parameter service for the ONAP Policy Framework. + * + * @author Liam Fallon (liam.fallon@ericsson.com) + */ +package org.onap.policy.common.parameters; |