diff options
author | an4828 <nekrassov@att.com> | 2018-01-22 17:17:34 -0500 |
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committer | an4828 <nekrassov@att.com> | 2018-01-22 17:20:00 -0500 |
commit | c489a2eb22484e798c39a978bc8b61821b92322f (patch) | |
tree | 5aafe90efc15f8ced47e0d14c5f23a86a07f03e1 /dcae-analytics-common/src/main/java/org/onap/dcae/apod/analytics/common/service/filter/GenericJsonMessageFilter.java | |
parent | baaecfc19132034168beb64a0c1e7813c7c17c4a (diff) |
TCA: Replace any openecomp reference by onap
Change-Id: I7c6d812ab5c1d7b30c63653d1974b0b1abc099be
Signed-off-by: an4828 <nekrassov@att.com>
Issue-ID: DCAEGEN2-224
Signed-off-by: an4828 <nekrassov@att.com>
Diffstat (limited to 'dcae-analytics-common/src/main/java/org/onap/dcae/apod/analytics/common/service/filter/GenericJsonMessageFilter.java')
-rw-r--r-- | dcae-analytics-common/src/main/java/org/onap/dcae/apod/analytics/common/service/filter/GenericJsonMessageFilter.java | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/dcae-analytics-common/src/main/java/org/onap/dcae/apod/analytics/common/service/filter/GenericJsonMessageFilter.java b/dcae-analytics-common/src/main/java/org/onap/dcae/apod/analytics/common/service/filter/GenericJsonMessageFilter.java new file mode 100644 index 0000000..0bdae9e --- /dev/null +++ b/dcae-analytics-common/src/main/java/org/onap/dcae/apod/analytics/common/service/filter/GenericJsonMessageFilter.java @@ -0,0 +1,115 @@ +/* + * ===============================LICENSE_START====================================== + * dcae-analytics + * ================================================================================ + * Copyright © 2017 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.dcae.apod.analytics.common.service.filter; + +import com.google.common.collect.ImmutableSet; +import com.jayway.jsonpath.DocumentContext; +import com.jayway.jsonpath.JsonPath; +import com.jayway.jsonpath.PathNotFoundException; +import org.apache.commons.lang3.StringUtils; +import org.onap.dcae.apod.analytics.common.service.processor.AbstractMessageProcessor; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.util.List; +import java.util.Set; + +/** + * A Generic Json Message Filter which filter the json message based on given json Path and list of expected values + * for that json path. The {@link JsonMessageFilterProcessorContext#isMatched} flag will be changed as per table below: + * <pre> + * Incoming message is blank or invalid Json = null + * Incoming message path is matches expected values = true + * Incoming message does not match expected values or path does not exist = false + * </pre> + * <p> + * @author Rajiv Singla . Creation Date: 2/10/2017. + */ +public class GenericJsonMessageFilter extends AbstractMessageProcessor<JsonMessageFilterProcessorContext> { + + private static final Logger LOG = LoggerFactory.getLogger(GenericJsonMessageFilter.class); + private static final long serialVersionUID = 1L; + + private final String filterName; + private final String jsonPath; + private final Set<String> expectedValues; + + public GenericJsonMessageFilter(final String filterName, final String jsonPath, final Set<String> expectedValues) { + this.filterName = filterName; + this.jsonPath = jsonPath; + this.expectedValues = expectedValues; + } + + public GenericJsonMessageFilter(final String filterName, final String jsonPath, final String expectedValue) { + this(filterName, jsonPath, ImmutableSet.of(expectedValue)); + } + + @Override + public String getProcessorDescription() { + return filterName; + } + + @Override + public JsonMessageFilterProcessorContext processMessage(final JsonMessageFilterProcessorContext processorContext) { + + final String jsonMessage = processorContext.getMessage().trim(); + + if (StringUtils.isNotBlank(jsonMessage) && jsonMessage.startsWith("{") && jsonMessage.endsWith("}")) { + + // locate json path value + final DocumentContext documentContext = JsonPath.parse(jsonMessage); + String jsonPathValue = null; + try { + final List jsonPathValues = documentContext.read(jsonPath); + final Object pathValue = jsonPathValues.isEmpty() ? null : jsonPathValues.get(0); + jsonPathValue = pathValue instanceof Number ? pathValue.toString() : (String) pathValue; + } catch (PathNotFoundException ex) { + LOG.info("Unable to find json Path: {}. Exception: {}, Json Message: {}", jsonPath, ex, jsonMessage); + } + + LOG.debug("Value for jsonPath: {}, jsonPathValue: {}, expected Values: {}", + jsonPath, jsonPathValue, expectedValues); + + // if json path value is null or we json value is not present in expect values then terminate early + if (jsonPathValue == null || !expectedValues.contains(jsonPathValue)) { + final String terminatingMessage = String.format("Filter match unsuccessful. " + + "JsonPath: %s, Actual JsonPathValue: %s, Excepted Json Path Values: %s", + jsonPath, jsonPathValue, expectedValues); + processorContext.setMatched(false); + setTerminatingProcessingMessage(terminatingMessage, processorContext); + } else { + final String finishProcessingMessage = String.format("Filter match successful. " + + "JsonPath: %s, Actual JsonPathValue: %s, Excepted Json Path Values: %s", + jsonPath, jsonPathValue, expectedValues); + processorContext.setMatched(true); + setFinishedProcessingMessage(finishProcessingMessage, processorContext); + } + } else { + // if incoming message is blank of valid Json then matched flag will be null + final String terminatingMessage = "Incoming json message is blank or not json. " + + "Json filter cannot be applied"; + processorContext.setMatched(null); + setTerminatingProcessingMessage(terminatingMessage, processorContext); + } + + return processorContext; + } +} |