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authorwasala <przemyslaw.wasala@nokia.com>2018-07-09 14:30:01 +0200
committerwasala <przemyslaw.wasala@nokia.com>2018-08-07 09:58:22 +0200
commit01578219e470c4cd9b6181c0615759a7118c0abb (patch)
treef0dd62d9d4fb96c688ef4e0985b5f5a8f4e21f65 /prh-app-server/src/main/java
parente74228673c9c5241a9e901726716f77aacb2711f (diff)
Refactor jsonParsing to reactive
Already forwarded responsibility of creation Mono stream in function in DmaapConsumerJsonParser Change-Id: Ia03695c7e22575d078e169eeaa45ca1416c558a8 Issue-ID: DCAEGEN2-563 Signed-off-by: wasala <przemyslaw.wasala@nokia.com>
Diffstat (limited to 'prh-app-server/src/main/java')
-rw-r--r--prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/service/DmaapConsumerJsonParser.java93
1 files changed, 49 insertions, 44 deletions
diff --git a/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/service/DmaapConsumerJsonParser.java b/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/service/DmaapConsumerJsonParser.java
index 7516853e..255a7eb1 100644
--- a/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/service/DmaapConsumerJsonParser.java
+++ b/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/service/DmaapConsumerJsonParser.java
@@ -17,6 +17,7 @@
* limitations under the License.
* ============LICENSE_END=========================================================
*/
+
package org.onap.dcaegen2.services.prh.service;
import com.google.gson.JsonElement;
@@ -28,8 +29,6 @@ import org.onap.dcaegen2.services.prh.exceptions.DmaapEmptyResponseException;
import org.onap.dcaegen2.services.prh.exceptions.DmaapNotFoundException;
import org.onap.dcaegen2.services.prh.model.ConsumerDmaapModel;
import org.onap.dcaegen2.services.prh.model.ImmutableConsumerDmaapModel;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
import org.springframework.util.StringUtils;
import reactor.core.publisher.Mono;
@@ -38,7 +37,6 @@ import reactor.core.publisher.Mono;
*/
public class DmaapConsumerJsonParser {
- private final Logger logger = LoggerFactory.getLogger(this.getClass());
private static final String EVENT = "event";
private static final String OTHER_FIELDS = "otherFields";
private static final String PNF_OAM_IPV_4_ADDRESS = "pnfOamIpv4Address";
@@ -46,73 +44,80 @@ public class DmaapConsumerJsonParser {
private static final String PNF_VENDOR_NAME = "pnfVendorName";
private static final String PNF_SERIAL_NUMBER = "pnfSerialNumber";
-
public Mono<ConsumerDmaapModel> getJsonObject(Mono<String> monoMessage) {
return monoMessage
- .flatMap(message -> (StringUtils.isEmpty(message) ? Mono.error(new DmaapEmptyResponseException())
- : convertJsonToConsumerDmaapModel(message)));
+ .flatMap(this::getJsonParserMessage)
+ .flatMap(this::createJsonConsumerModel);
+ }
+
+ private Mono<JsonElement> getJsonParserMessage(String message) {
+ return StringUtils.isEmpty(message) ? Mono.error(new DmaapEmptyResponseException())
+ : Mono.fromSupplier(() -> new JsonParser().parse(message));
}
- private Mono<? extends ConsumerDmaapModel> convertJsonToConsumerDmaapModel(String message) {
- try {
- JsonElement jsonElement = new JsonParser().parse(message);
- ConsumerDmaapModel consumerDmaapModel = jsonElement.isJsonObject() ?
- create(jsonElement.getAsJsonObject()) :
- getConsumerDmaapModelFromJsonArray(jsonElement);
- logger.info("Parsed model from DmaaP after getting it: {}", consumerDmaapModel);
- return Mono.just(consumerDmaapModel);
- } catch (DmaapNotFoundException | DmaapEmptyResponseException e) {
- return Mono.error(e);
- }
+ private Mono<ConsumerDmaapModel> createJsonConsumerModel(JsonElement jsonElement) {
+ return jsonElement.isJsonObject()
+ ? create(Mono.fromSupplier(jsonElement::getAsJsonObject))
+ : getConsumerDmaapModelFromJsonArray(jsonElement);
}
- private ConsumerDmaapModel getConsumerDmaapModelFromJsonArray(JsonElement jsonElement)
- throws DmaapNotFoundException, DmaapEmptyResponseException {
+ private Mono<ConsumerDmaapModel> getConsumerDmaapModelFromJsonArray(JsonElement jsonElement) {
return create(
- StreamSupport.stream(jsonElement.getAsJsonArray().spliterator(), false).findFirst()
+ Mono.fromCallable(() -> StreamSupport.stream(jsonElement.getAsJsonArray().spliterator(), false).findFirst()
.flatMap(this::getJsonObjectFromAnArray)
- .orElseThrow(DmaapEmptyResponseException::new));
+ .orElseThrow(DmaapEmptyResponseException::new)));
}
public Optional<JsonObject> getJsonObjectFromAnArray(JsonElement element) {
return Optional.of(new JsonParser().parse(element.getAsString()).getAsJsonObject());
}
- private ConsumerDmaapModel create(JsonObject jsonObject) throws DmaapNotFoundException {
- if (containsHeader(jsonObject)) {
- jsonObject = jsonObject.getAsJsonObject(EVENT).getAsJsonObject(OTHER_FIELDS);
- String pnfVendorName = getValueFromJson(jsonObject, PNF_VENDOR_NAME);
- String pnfSerialNumber = getValueFromJson(jsonObject, PNF_SERIAL_NUMBER);
- String pnfOamIpv4Address = getValueFromJson(jsonObject, PNF_OAM_IPV_4_ADDRESS);
- String pnfOamIpv6Address = getValueFromJson(jsonObject, PNF_OAM_IPV_6_ADDRESS);
- if (isVendorAndSerialNotEmpty(pnfSerialNumber, pnfVendorName) && isIpPropertiesNotEmpty(pnfOamIpv4Address,
- pnfOamIpv6Address)) {
- String correlationID = pnfVendorName.substring(0, Math.min(pnfVendorName.length(), 3)).toUpperCase()
- .concat(pnfSerialNumber);
- return ImmutableConsumerDmaapModel.builder().pnfName(correlationID).ipv4(pnfOamIpv4Address)
- .ipv6(pnfOamIpv6Address).build();
- }
- throw new DmaapNotFoundException("IPV4 and IPV6 are empty");
- }
- throw new DmaapNotFoundException("Incorrect JsonObject - missing header");
+ private Mono<ConsumerDmaapModel> create(Mono<JsonObject> jsonObject) {
+ return jsonObject.flatMap(monoJsonP ->
+ !containsHeader(monoJsonP) ? Mono.error(new DmaapNotFoundException("Incorrect JsonObject - missing header"))
+ : transform(monoJsonP));
+ }
+
+ private Mono<ConsumerDmaapModel> transform(JsonObject monoJsonP) {
+ monoJsonP = monoJsonP.getAsJsonObject(EVENT).getAsJsonObject(OTHER_FIELDS);
+ String pnfVendorName = getValueFromJson(monoJsonP, PNF_VENDOR_NAME);
+ String pnfSerialNumber = getValueFromJson(monoJsonP, PNF_SERIAL_NUMBER);
+ String pnfOamIpv4Address = getValueFromJson(monoJsonP, PNF_OAM_IPV_4_ADDRESS);
+ String pnfOamIpv6Address = getValueFromJson(monoJsonP, PNF_OAM_IPV_6_ADDRESS);
+ return
+ (!vendorAndSerialNotEmpty(pnfSerialNumber, pnfVendorName) || !ipPropertiesNotEmpty(pnfOamIpv4Address,
+ pnfOamIpv6Address))
+ ? Mono.error(new DmaapNotFoundException("Incorrect json, consumerDmaapModel can not be created: "
+ + printMessage(pnfVendorName, pnfSerialNumber, pnfOamIpv4Address, pnfOamIpv6Address))) :
+ Mono.just(ImmutableConsumerDmaapModel.builder()
+ .pnfName(pnfVendorName.substring(0, Math.min(pnfVendorName.length(), 3)).toUpperCase()
+ .concat(pnfSerialNumber)).ipv4(pnfOamIpv4Address)
+ .ipv6(pnfOamIpv6Address).build());
}
private String getValueFromJson(JsonObject jsonObject, String jsonKey) {
return jsonObject.has(jsonKey) ? jsonObject.get(jsonKey).getAsString() : "";
}
- private boolean isVendorAndSerialNotEmpty(String pnfSerialNumber, String pnfVendorName) {
- return ((pnfSerialNumber != null && !pnfSerialNumber.isEmpty()) && (pnfVendorName != null && !pnfVendorName
- .isEmpty()));
+ private boolean vendorAndSerialNotEmpty(String pnfSerialNumber, String pnfVendorName) {
+ return (!StringUtils.isEmpty(pnfSerialNumber) && !StringUtils.isEmpty(pnfVendorName));
}
- private boolean isIpPropertiesNotEmpty(String ipv4, String ipv6) {
- return (ipv4 != null && !ipv4.isEmpty()) || (ipv6 != null
- && !ipv6.isEmpty());
+ private boolean ipPropertiesNotEmpty(String ipv4, String ipv6) {
+ return (!StringUtils.isEmpty(ipv4)) || !(StringUtils.isEmpty(ipv6));
}
private boolean containsHeader(JsonObject jsonObject) {
return jsonObject.has(EVENT) && jsonObject.getAsJsonObject(EVENT).has(OTHER_FIELDS);
}
+ private String printMessage(String pnfVendorName, String pnfSerialNumber, String pnfOamIpv4Address,
+ String pnfOamIpv6Address) {
+ return String.format("\n{"
+ + "\"pnfVendorName\" : \"%s\","
+ + "\"pnfSerialNumber\": \"%s\","
+ + "\"pnfOamIpv4Address\": \"%s\","
+ + "\"pnfOamIpv6Address\": \"%s\""
+ + "\n}", pnfVendorName, pnfSerialNumber, pnfOamIpv4Address, pnfOamIpv6Address);
+ }
}