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-rw-r--r--utils/src/main/java/org/onap/policy/common/utils/properties/PropertyConfiguration.java498
1 files changed, 0 insertions, 498 deletions
diff --git a/utils/src/main/java/org/onap/policy/common/utils/properties/PropertyConfiguration.java b/utils/src/main/java/org/onap/policy/common/utils/properties/PropertyConfiguration.java
deleted file mode 100644
index b41f3bc0..00000000
--- a/utils/src/main/java/org/onap/policy/common/utils/properties/PropertyConfiguration.java
+++ /dev/null
@@ -1,498 +0,0 @@
-/*
- * ============LICENSE_START=======================================================
- * ONAP Policy Engine - Common Modules
- * ================================================================================
- * Copyright (C) 2018-2019 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.onap.policy.common.utils.properties;
-
-import java.lang.annotation.ElementType;
-import java.lang.annotation.Retention;
-import java.lang.annotation.RetentionPolicy;
-import java.lang.annotation.Target;
-import java.lang.reflect.Field;
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
-import java.lang.reflect.Modifier;
-import java.util.Properties;
-import org.apache.commons.lang3.StringUtils;
-import org.onap.policy.common.utils.properties.exception.PropertyAccessException;
-import org.onap.policy.common.utils.properties.exception.PropertyException;
-import org.onap.policy.common.utils.properties.exception.PropertyInvalidException;
-import org.onap.policy.common.utils.properties.exception.PropertyMissingException;
-
-/**
- * Configuration whose fields are initialized by reading from a set of {@link Properties},
- * as directed by the {@link Property} annotations that appear on fields within the
- * subclass. The values of the fields are set via <i>setXxx()</i> methods. As a result, if
- * a field is annotated and there is no corresponding <i>setXxx()</i> method, then an
- * exception will be thrown.
- *
- * <p>It is possible that an invalid <i>defaultValue</i> is specified via the
- * {@link Property} annotation. This could remain undetected until an optional property is
- * left out of the {@link Properties}. Consequently, this class will always validate a
- * {@link Property}'s default value, if the <i>defaultValue</i> is not empty or if
- * <i>accept</i> includes the "empty" option.
- */
-public class PropertyConfiguration {
-
- /**
- * The "empty" option that may appear within the {@link Property}'s <i>accept</i>
- * attribute.
- */
- public static final String ACCEPT_EMPTY = "empty";
-
- /**
- * Constructs a configuration, without populating any fields; fields should be
- * populated later by invoking {@link #setAllFields(Properties)}.
- */
- public PropertyConfiguration() {
- super();
- }
-
- /**
- * Initializes each "@Property" field with its value, as found in the properties.
- *
- * @param props properties from which to extract the values
- * @throws PropertyException if an error occurs
- */
- public PropertyConfiguration(Properties props) throws PropertyException {
- setAllFields(props);
- }
-
- /**
- * Walks the class hierarchy of "this" object, populating fields defined in each
- * class, using values extracted from the given property set.
- *
- * @param props properties from which to extract the values
- * @throws PropertyException if an error occurs
- */
- public void setAllFields(Properties props) throws PropertyException {
- Class<?> clazz = getClass();
-
- while (clazz != PropertyConfiguration.class) {
- for (Field field : clazz.getDeclaredFields()) {
- setValue(field, props);
- }
-
- clazz = clazz.getSuperclass();
- }
- }
-
- /**
- * Sets a field's value, within an object, based on what's in the properties.
- *
- * @param field field whose value is to be set
- * @param props properties from which to get the value
- * @return {@code true} if the property's value was set, {@code false} otherwise
- * @throws PropertyException if an error occurs
- */
- protected boolean setValue(Field field, Properties props) throws PropertyException {
- Property prop = field.getAnnotation(Property.class);
- if (prop == null) {
- return false;
- }
-
- checkModifiable(field, prop);
-
- Method setter = getSetter(field, prop);
- checkSetter(setter, prop);
-
- if (setValue(setter, field, props, prop)) {
- return true;
- }
-
- throw new PropertyAccessException(prop.name(), field.getName(), "unsupported field type");
- }
-
- /**
- * Sets a field's value from a particular property.
- *
- * @param setter method to be used to set the field's value
- * @param field field whose value is to be set
- * @param props properties from which to get the value
- * @param prop property of interest
- * @return {@code true} if the property's value was set, {@code false} otherwise
- * @throws PropertyException if an error occurs
- */
- protected boolean setValue(Method setter, Field field, Properties props, Property prop) throws PropertyException {
-
- try {
- Object val = getValue(field, props, prop);
- if (val == null) {
- return false;
-
- } else {
- setter.invoke(this, val);
- return true;
- }
-
- } catch (IllegalArgumentException e) {
- throw new PropertyInvalidException(prop.name(), field.getName(), e);
-
- } catch (IllegalAccessException | InvocationTargetException e) {
- throw new PropertyAccessException(prop.name(), setter.getName(), e);
- }
- }
-
- /**
- * Get the setter.
- *
- * @param field field whose value is to be set
- * @param prop property of interest
- * @return the method to be used to set the field's value
- * @throws PropertyAccessException if a "set" method cannot be identified
- */
- private Method getSetter(Field field, Property prop) throws PropertyAccessException {
- String nm = "set" + StringUtils.capitalize(field.getName());
-
- try {
- return this.getClass().getMethod(nm, field.getType());
-
- } catch (NoSuchMethodException | SecurityException e) {
- throw new PropertyAccessException(prop.name(), nm, e);
- }
- }
-
- /**
- * Gets a property value, coercing it to the field's type.
- *
- * @param field field whose value is to be set
- * @param props properties from which to get the value
- * @param prop property of interest
- * @return the value extracted from the property, or {@code null} if the field type is
- * not supported
- * @throws PropertyException if an error occurs
- */
- protected Object getValue(Field field, Properties props, Property prop) throws PropertyException {
-
- Class<?> clazz = field.getType();
- String fieldName = field.getName();
-
- // can still add support for short, float, double, enum
-
- if (clazz == String.class) {
- return getStringValue(fieldName, props, prop);
-
- } else if (clazz == Boolean.class || clazz == boolean.class) {
- return getBooleanValue(fieldName, props, prop);
-
- } else if (clazz == Integer.class || clazz == int.class) {
- return getIntegerValue(fieldName, props, prop);
-
- } else if (clazz == Long.class || clazz == long.class) {
- return getLongValue(fieldName, props, prop);
-
- } else {
- return null;
- }
- }
-
- /**
- * Verifies that the field can be modified, i.e., it's neither <i>static</i>, nor
- * <i>final</i>.
- *
- * @param field field whose value is to be set
- * @param prop property of interest
- * @throws PropertyAccessException if the field is not modifiable
- */
- protected void checkModifiable(Field field, Property prop) throws PropertyAccessException {
- int mod = field.getModifiers();
-
- if (Modifier.isStatic(mod)) {
- throw new PropertyAccessException(prop.name(), field.getName(), "'static' variable cannot be modified");
- }
-
- if (Modifier.isFinal(mod)) {
- throw new PropertyAccessException(prop.name(), field.getName(), "'final' variable cannot be modified");
- }
- }
-
- /**
- * Verifies that the setter method is not <i>static</i>.
- *
- * @param setter method to be checked
- * @param prop property of interest
- * @throws PropertyAccessException if the method is static
- */
- private void checkSetter(Method setter, Property prop) throws PropertyAccessException {
- int mod = setter.getModifiers();
-
- if (Modifier.isStatic(mod)) {
- throw new PropertyAccessException(prop.name(), setter.getName(), "method is 'static'");
- }
- }
-
- /**
- * Gets a property value, coercing it to a String.
- *
- * @param fieldName field whose value is to be set
- * @param props properties from which to get the value
- * @param prop property of interest
- * @return the value extracted from the property
- * @throws PropertyException if an error occurs
- */
- protected String getStringValue(String fieldName, Properties props, Property prop) throws PropertyException {
-
- /*
- * Note: the default value for a String type is always valid, thus no need to
- * check it.
- */
-
- return getPropValue(fieldName, props, prop);
- }
-
- /**
- * Gets a property value, coercing it to a Boolean.
- *
- * @param fieldName field whose value is to be set
- * @param props properties from which to get the value
- * @param prop property of interest
- * @return the value extracted from the property
- * @throws PropertyException if an error occurs
- */
- protected Boolean getBooleanValue(String fieldName, Properties props, Property prop) throws PropertyException {
- // validate the default value
- checkDefaultValue(fieldName, prop, xxx -> makeBoolean(fieldName, prop, prop.defaultValue()));
-
- return makeBoolean(fieldName, prop, getPropValue(fieldName, props, prop));
- }
-
- /**
- * Gets a property value, coercing it to an Integer.
- *
- * @param fieldName field whose value is to be set
- * @param props properties from which to get the value
- * @param prop property of interest
- * @return the value extracted from the property
- * @throws PropertyException if an error occurs
- */
- protected Integer getIntegerValue(String fieldName, Properties props, Property prop) throws PropertyException {
- // validate the default value
- checkDefaultValue(fieldName, prop, xxx -> makeInteger(fieldName, prop, prop.defaultValue()));
-
- return makeInteger(fieldName, prop, getPropValue(fieldName, props, prop));
- }
-
- /**
- * Gets a property value, coercing it to a Long.
- *
- * @param fieldName field whose value is to be set
- * @param props properties from which to get the value
- * @param prop property of interest
- * @return the value extracted from the property
- * @throws PropertyException if an error occurs
- */
- protected Long getLongValue(String fieldName, Properties props, Property prop) throws PropertyException {
- // validate the default value
- checkDefaultValue(fieldName, prop, xxx -> makeLong(fieldName, prop, prop.defaultValue()));
-
- return makeLong(fieldName, prop, getPropValue(fieldName, props, prop));
- }
-
- /**
- * Gets a value from the property set.
- *
- * @param fieldName field whose value is to be set
- * @param props properties from which to get the value
- * @param prop property of interest
- * @return the value extracted from the property, or the <i>defaultValue</i> if the
- * value does not exist
- * @throws PropertyMissingException if the property does not exist and the
- * <i>defaultValue</i> is empty and <i>emptyOk</i> is {@code false}
- */
- protected String getPropValue(String fieldName, Properties props, Property prop) throws PropertyMissingException {
- String propnm = prop.name();
-
- String val = getRawPropertyValue(props, propnm);
- if (val != null && isEmptyOk(prop, val)) {
- return val;
- }
-
- val = prop.defaultValue();
- if (val != null && isEmptyOk(prop, val)) {
- return val;
- }
-
- throw new PropertyMissingException(prop.name(), fieldName);
- }
-
- /**
- * Gets the property value, straight from the property set.
- *
- * @param props properties from which to get the value
- * @param propnm name of the property of interest
- * @return the raw property value
- */
- protected String getRawPropertyValue(Properties props, String propnm) {
- return props.getProperty(propnm);
- }
-
- /**
- * Coerces a String value into a Boolean.
- *
- * @param fieldName field whose value is to be set
- * @param prop property of interest
- * @param value value to be coerced
- * @return the Boolean value represented by the String value
- * @throws PropertyInvalidException if the value does not represent a valid Boolean
- */
- private Boolean makeBoolean(String fieldName, Property prop, String value) throws PropertyInvalidException {
- if ("true".equalsIgnoreCase(value)) {
- return Boolean.TRUE;
-
- } else if ("false".equalsIgnoreCase(value)) {
- return Boolean.FALSE;
-
- } else {
- throw new PropertyInvalidException(prop.name(), fieldName, "expecting 'true' or 'false'");
- }
- }
-
- /**
- * Coerces a String value into an Integer.
- *
- * @param fieldName field whose value is to be set
- * @param prop property of interest
- * @param value value to be coerced
- * @return the Integer value represented by the String value
- * @throws PropertyInvalidException if the value does not represent a valid Integer
- */
- private Integer makeInteger(String fieldName, Property prop, String value) throws PropertyInvalidException {
- try {
- return Integer.valueOf(value);
-
- } catch (NumberFormatException e) {
- throw new PropertyInvalidException(prop.name(), fieldName, e);
- }
- }
-
- /**
- * Coerces a String value into a Long.
- *
- * @param fieldName field whose value is to be set
- * @param prop property of interest
- * @param value value to be coerced
- * @return the Long value represented by the String value
- * @throws PropertyInvalidException if the value does not represent a valid Long
- */
- private Long makeLong(String fieldName, Property prop, String value) throws PropertyInvalidException {
- try {
- return Long.valueOf(value);
-
- } catch (NumberFormatException e) {
- throw new PropertyInvalidException(prop.name(), fieldName, e);
- }
- }
-
- /**
- * Applies a function to check a property's default value. If the function throws an
- * exception about an invalid property, then it's re-thrown as an exception about an
- * invalid <i>defaultValue</i>.
- *
- * @param fieldName name of the field being checked
- * @param prop property of interest
- * @param func function to invoke to check the default value
- */
- private void checkDefaultValue(String fieldName, Property prop, CheckDefaultValueFunction func)
- throws PropertyInvalidException {
-
- if (isEmptyOk(prop, prop.defaultValue())) {
- try {
- func.apply(null);
-
- } catch (PropertyInvalidException ex) {
- throw new PropertyInvalidException(ex.getPropertyName(), fieldName, "defaultValue is invalid", ex);
- }
- }
- }
-
- /**
- * Determines if a value is OK, even if it's empty.
- *
- * @param prop property specifying what's acceptable
- * @param value value to be checked
- * @return {@code true} if the value is not empty or empty is allowed, {@code false}
- * otherwise
- */
- protected boolean isEmptyOk(Property prop, String value) {
- return !value.isEmpty() || isEmptyOk(prop);
- }
-
- /**
- * Determines if a {@link Property}'s <i>accept</i> attribute includes the "empty"
- * option.
- *
- * @param prop property whose <i>accept</i> attribute is to be examined
- * @return {@code true} if the <i>accept</i> attribute includes "empty"
- */
- protected boolean isEmptyOk(Property prop) {
- for (String option : prop.accept().split(",")) {
- if (ACCEPT_EMPTY.equals(option)) {
- return true;
- }
- }
-
- return false;
- }
-
- /**
- * Functions to check a default value.
- */
- @FunctionalInterface
- private static interface CheckDefaultValueFunction {
-
- /**
- * Checks the default value.
- *
- * @param arg always {@code null}
- * @throws PropertyInvalidException if an error occurs
- */
- public void apply(Void arg) throws PropertyInvalidException;
- }
-
- /**
- * Annotation that declares a variable to be configured via {@link Properties}.
- */
- @Target(ElementType.FIELD)
- @Retention(RetentionPolicy.RUNTIME)
-
- protected static @interface Property {
-
- /**
- * Name of the property.
- *
- * @return the property name
- */
- public String name();
-
- /**
- * Default value, used when the property does not exist.
- *
- * @return the default value
- */
- public String defaultValue() default "";
-
- /**
- * Comma-separated options identifying what's acceptable. The word, "empty",
- * indicates that an empty string, "", is an acceptable value.
- *
- * @return options identifying what's acceptable
- */
- public String accept() default "";
- }
-}