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Diffstat (limited to 'src/main/java/org/onap/aai/validation/result/Violation.java')
| -rw-r--r-- | src/main/java/org/onap/aai/validation/result/Violation.java | 418 |
1 files changed, 418 insertions, 0 deletions
diff --git a/src/main/java/org/onap/aai/validation/result/Violation.java b/src/main/java/org/onap/aai/validation/result/Violation.java new file mode 100644 index 0000000..29baed3 --- /dev/null +++ b/src/main/java/org/onap/aai/validation/result/Violation.java @@ -0,0 +1,418 @@ +/* + * ============LICENSE_START=================================================== + * Copyright (c) 2018 Amdocs + * ============================================================================ + * 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.aai.validation.result; + +import com.google.gson.JsonElement; +import com.google.gson.JsonObject; +import com.google.gson.annotations.Expose; +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.io.ObjectOutputStream; +import java.security.MessageDigest; +import java.security.NoSuchAlgorithmException; +import java.util.Map; +import java.util.Objects; +import java.util.Optional; +import org.apache.commons.lang3.builder.EqualsBuilder; +import org.onap.aai.validation.exception.ValidationServiceError; +import org.onap.aai.validation.exception.ValidationServiceException; +import org.onap.aai.validation.reader.data.Entity; +import org.onap.aai.validation.reader.data.EntityId; +import org.onap.aai.validation.util.JsonUtil; + +/** + * A validation violation. + */ +public class Violation { + + public static final String ENTITY_TYPE_PROPERTY = "entityType"; + public static final String ENTITY_ID_PROPERTY = "entityId"; + public static final String ENTITY_MODELNAME_PROPERTY = "modelName"; + + @Expose + private final String violationId; + + @Expose + private String modelName; + + @Expose + private final String category; + + @Expose + private final String severity; + + @Expose + private final String violationType; + + /** + * The rule name (not applicable for model-driven) is not final as the value may be set to null via deserialisation + * and we will need to update the field. + */ + @Expose + private Optional<String> validationRule; + + @Expose + private final JsonElement violationDetails; + + @Expose + private String errorMessage; + + /** + * rule-based or model-driven? + */ + public enum ViolationType { + NONE, RULE, MODEL + } + + /** + * Builder for a Violation. + */ + public static class Builder { + + private final MessageDigest messageDigest; + private final JsonElement entityId; + private final String entityType; + private final String entityLink; + private final String resourceVersion; + private String category = null; + private String severity = null; + private String violationType = null; + private Optional<String> validationRule = Optional.empty(); + private JsonElement violationDetails = new JsonObject(); + private String errorMessage = null; + + /** + * Create a Violation Builder for the supplied entity. + * + * @param entity + * the entity + * @throws ValidationServiceException + * the validation service exception + */ + public Builder(Entity entity) throws ValidationServiceException { + this.entityId = new JsonObject(); + for (EntityId id : entity.getIds()) { + this.entityId.getAsJsonObject().addProperty(id.getPrimaryKey(), id.getValue()); + } + this.entityType = entity.getType(); + this.entityLink = entity.getEntityLink(); + this.resourceVersion = entity.getResourceVersion().orElse(null); + try { + messageDigest = MessageDigest.getInstance("SHA-256"); + } catch (NoSuchAlgorithmException e) { + throw new ValidationServiceException(ValidationServiceError.MESSAGE_DIGEST_ERROR, e); + } + } + + /** + * Category. + * + * @param val + * the val + * @return the builder + */ + public Builder category(String val) { + category = val; + return this; + } + + /** + * Severity. + * + * @param val + * the val + * @return the builder + */ + public Builder severity(String val) { + severity = val; + return this; + } + + /** + * Violation type. + * + * @param val + * the val + * @return the builder + */ + public Builder violationType(String val) { + violationType = val; + return this; + } + + /** + * Violation type. + * + * @param type + * the type + * @return the builder + */ + public Builder violationType(ViolationType type) { + String name = type.name(); + // Convert to Camel Case + return violationType(name.substring(0, 1).toUpperCase() + name.substring(1, name.length()).toLowerCase()); + } + + /** + * Validation rule. + * + * @param val + * the val + * @return the builder + */ + public Builder validationRule(String val) { + validationRule = Optional.ofNullable(val); + return this; + } + + /** + * Violation details. + * + * @param map + * the map + * @return the builder + */ + public Builder violationDetails(Map<String, Object> map) { + violationDetails = JsonUtil.toJsonElement(map); + return this; + } + + /** + * Error message. + * + * @param val + * the val + * @return the builder + */ + public Builder errorMessage(String val) { + errorMessage = val; + return this; + } + + /** + * Generate violation id. + * + * @return a deterministic identifier of the violation (from its details) which may be used to compare the + * equality of violations which are created at different times + * @throws ValidationServiceException + * the validation service exception + */ + public String generateViolationId() throws ValidationServiceException { + try (ByteArrayOutputStream baos = new ByteArrayOutputStream()) { + StringBuilder result = new StringBuilder(); + writeObjectToStream(baos); + messageDigest.reset(); // Not strictly needed as digest() will cause a reset + for (byte byt : messageDigest.digest(baos.toByteArray())) { + result.append(Integer.toString((byt & 0xff) + 0x100, 16).substring(1)); + } + return result.toString(); + } catch (IOException e) { + throw new ValidationServiceException(ValidationServiceError.JSON_READER_PARSE_ERROR, e); + } + } + + /** + * Builds the. + * + * @return a new Violation object + * @throws ValidationServiceException + * the validation service exception + */ + public Violation build() throws ValidationServiceException { + return new Violation(this); + } + + /* + * (non-Javadoc) + * + * @see java.lang.Object#toString() + */ + @Override + public String toString() { + return "Builder [entityId=" + entityId + ", entityType=" + entityType + ", entityLink=" + entityLink + ", resourceVersion=" + resourceVersion + + ", category=" + category + ", severity=" + severity + ", violationType=" + violationType + ", validationRule=" + validationRule + + ", violationDetails=" + violationDetails + ", errorMessage=" + errorMessage + "]"; + } + + /** + * Stream all fields that are required for generating a deterministic violation ID field. Note that + * resourceVersion is not included as this is allowed to vary + * + * @param baos + * the byte array output stream + * @throws IOException + * Signals that an I/O exception has occurred. + */ + private void writeObjectToStream(ByteArrayOutputStream baos) throws IOException { + ObjectOutputStream oos = new ObjectOutputStream(baos); + oos.writeObject(this.category); + oos.writeObject(this.entityId.toString()); + oos.writeObject(this.entityType); + oos.writeObject(this.entityLink); + oos.writeObject(this.severity); + oos.writeObject(this.validationRule.toString()); + oos.writeObject(this.violationDetails.toString()); + oos.writeObject(this.violationType); + oos.close(); + } + + } + + /** + * Instantiates a new Violation object via a builder. + * + * @param builder + * the builder storing the Violation values + * @throws ValidationServiceException + * the validation service exception + */ + private Violation(Builder builder) throws ValidationServiceException { + violationId = builder.generateViolationId(); + category = builder.category; + severity = builder.severity; + violationType = builder.violationType; + validationRule = builder.validationRule; + // Clone by serialising and deserialising! + violationDetails = JsonUtil.fromJson(JsonUtil.toJson(builder.violationDetails), JsonElement.class); + errorMessage = builder.errorMessage; + } + + /** + * Gets the violation id. + * + * @return the violation id + */ + public String getViolationId() { + return violationId; + } + + /** + * Gets the model name. + * + * @return the model name + */ + public String getModelName() { + return modelName; + } + + /** + * Sets the model name. + * + * @param modelName + * the new model name + */ + // Naughty and breaks the builder pattern but it saves a lot of faffing about. + public void setModelName(String modelName) { + this.modelName = modelName; + } + + /** + * Gets the category. + * + * @return the category + */ + public String getCategory() { + return category; + } + + /** + * Gets the severity. + * + * @return the severity + */ + public String getSeverity() { + return severity; + } + + /** + * Gets the violation type. + * + * @return the violation type + */ + public String getViolationType() { + return violationType; + } + + /** + * Gets the violation details. + * + * @return the violation details + */ + @SuppressWarnings("unchecked") + public Map<String, Object> getViolationDetails() { + return JsonUtil.toAnnotatedClassfromJson(violationDetails.getAsJsonObject().toString(), Map.class); + } + + /** + * Gets the error message. + * + * @return the error message + */ + public String getErrorMessage() { + return errorMessage; + } + + @Override + public int hashCode() { + return Objects.hash(this.modelName, this.category, this.errorMessage, this.severity, this.validationRule, this.violationDetails, this.violationId, this.violationType); + } + + /* + * A hand-crafted equivalence relation to compare two Violation objects. Note that the violationId is compared + * first, because this value is deterministically generated from the majority of the object's fields. + * + * @see java.lang.Object#equals(java.lang.Object) + */ + @Override + public boolean equals(Object obj) { + if (!(obj instanceof Violation)) { + return false; + } else if (obj == this) { + return true; + } + Violation rhs = (Violation) obj; + // @formatter:off + return new EqualsBuilder() + .append(modelName, rhs.modelName) + .append(category, rhs.category) + .append(errorMessage, rhs.errorMessage) + .append(severity, rhs.severity) + .append(validationRule, rhs.validationRule) + .append(violationDetails, rhs.violationDetails) + .append(violationId, rhs.violationId) + .append(violationType, rhs.violationType) + .isEquals(); + // @formatter:on + } + + @Override + public String toString() { + return JsonUtil.toJson(this); + } + + /** + * Ensure that any unset fields are properly initialised. This is particularly useful when the object has been + * deserialised from a JSON string, as any missing/undefined values will not be read by the deserialiser and thus + * the corresponding fields will not be set. + */ + public void initialiseValues() { + if (validationRule == null) { // NOSONAR + validationRule = Optional.empty(); + } + } +} |