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Posted to issues@nifi.apache.org by GitBox <gi...@apache.org> on 2022/09/21 11:07:54 UTC
[GitHub] [nifi] arpadboda commented on a diff in pull request #6411: NIFI-14060 GetZendesk processor
arpadboda commented on code in PR #6411:
URL: https://github.com/apache/nifi/pull/6411#discussion_r976361586
##########
nifi-nar-bundles/nifi-zendesk-bundle/nifi-zendesk-processors/src/main/java/org/apache/nifi/processors/zendesk/GetZendesk.java:
##########
@@ -0,0 +1,375 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+package org.apache.nifi.processors.zendesk;
+
+import static com.fasterxml.jackson.core.JsonEncoding.UTF8;
+import static com.fasterxml.jackson.core.JsonToken.FIELD_NAME;
+import static com.fasterxml.jackson.core.JsonToken.VALUE_NULL;
+import static java.lang.String.format;
+import static java.nio.charset.StandardCharsets.UTF_8;
+import static java.util.Arrays.asList;
+import static java.util.Base64.getEncoder;
+import static java.util.Collections.singleton;
+import static java.util.Collections.singletonMap;
+import static java.util.Collections.unmodifiableList;
+import static org.apache.nifi.annotation.behavior.InputRequirement.Requirement.INPUT_FORBIDDEN;
+import static org.apache.nifi.components.state.Scope.CLUSTER;
+import static org.apache.nifi.expression.ExpressionLanguageScope.FLOWFILE_ATTRIBUTES;
+import static org.apache.nifi.processor.util.StandardValidators.NON_BLANK_VALIDATOR;
+import static org.apache.nifi.processor.util.StandardValidators.NON_EMPTY_VALIDATOR;
+import static org.apache.nifi.processor.util.StandardValidators.POSITIVE_LONG_VALIDATOR;
+import static org.apache.nifi.processors.zendesk.GetZendesk.RECORD_COUNT_ATTRIBUTE_NAME;
+import static org.apache.nifi.util.StringUtils.isNotBlank;
+import static org.apache.nifi.web.client.api.HttpResponseStatus.OK;
+
+import com.fasterxml.jackson.core.JsonFactory;
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import java.io.IOException;
+import java.io.UncheckedIOException;
+import java.net.URI;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.Set;
+import java.util.concurrent.atomic.AtomicInteger;
+import org.apache.commons.io.IOUtils;
+import org.apache.nifi.annotation.behavior.InputRequirement;
+import org.apache.nifi.annotation.behavior.PrimaryNodeOnly;
+import org.apache.nifi.annotation.behavior.Stateful;
+import org.apache.nifi.annotation.behavior.TriggerSerially;
+import org.apache.nifi.annotation.behavior.WritesAttribute;
+import org.apache.nifi.annotation.behavior.WritesAttributes;
+import org.apache.nifi.annotation.configuration.DefaultSettings;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.annotation.lifecycle.OnScheduled;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.components.ValidationContext;
+import org.apache.nifi.components.ValidationResult;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.processor.AbstractProcessor;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.io.OutputStreamCallback;
+import org.apache.nifi.web.client.api.HttpResponseEntity;
+import org.apache.nifi.web.client.api.HttpUriBuilder;
+import org.apache.nifi.web.client.provider.api.WebClientServiceProvider;
+
+@PrimaryNodeOnly
+@TriggerSerially
+@InputRequirement(INPUT_FORBIDDEN)
+@DefaultSettings(yieldDuration = "20 sec")
+@Tags({"zendesk"})
+@CapabilityDescription("Incrementally fetches data from Zendesk API")
+@Stateful(scopes = CLUSTER, description = "Paging cursor for Zendesk API is stored. Cursor is updated after each successful request.")
+@WritesAttributes({
+ @WritesAttribute(attribute = RECORD_COUNT_ATTRIBUTE_NAME, description = "The number of records fetched by the processor")})
+public class GetZendesk extends AbstractProcessor {
+
+ static final int HTTP_TOO_MANY_REQUESTS = 429;
+ static final String RECORD_COUNT_ATTRIBUTE_NAME = "record.count";
+
+ static final String REL_SUCCESS_NAME = "success";
+ static final String WEB_CLIENT_SERVICE_PROVIDER_NAME = "web-client-service-provider";
+ static final String ZENDESK_SUBDOMAIN_NAME = "zendesk-subdomain";
+ static final String ZENDESK_USER_NAME = "zendesk-user";
+ static final String ZENDESK_PASSWORD_NAME = "zendesk-password";
+ static final String ZENDESK_TOKEN_NAME = "zendesk-token";
+ static final String ZENDESK_EXPORT_METHOD_NAME = "zendesk-export-method";
+ static final String ZENDESK_RESOURCE_NAME = "zendesk-resource";
+ static final String ZENDESK_QUERY_START_TIMESTAMP_NAME = "zendesk-query-start-timestamp";
+
+ private static final String HTTPS = "https";
+ private static final String AUTHORIZATION_HEADER_NAME = "Authorization";
+ private static final String BASIC_AUTH_PREFIX = "Basic ";
+ private static final String ZENDESK_HOST_TEMPLATE = "%s.zendesk.com";
+ private static final String ZENDESK_USERNAME_WITH_TOKEN_TEMPLATE = "%s/token";
+
+ private static final Relationship REL_SUCCESS = new Relationship.Builder()
+ .name(REL_SUCCESS_NAME)
+ .description("For FlowFiles created as a result of a successful HTTP request.")
+ .build();
+
+ private static final Set<Relationship> RELATIONSHIPS = singleton(REL_SUCCESS);
+
+ private static final PropertyDescriptor WEB_CLIENT_SERVICE_PROVIDER = new PropertyDescriptor.Builder()
+ .name(WEB_CLIENT_SERVICE_PROVIDER_NAME)
+ .displayName("Web Client Service Provider")
+ .description("Controller service for HTTP client operations")
+ .identifiesControllerService(WebClientServiceProvider.class)
+ .required(true)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_SUBDOMAIN = new PropertyDescriptor.Builder()
+ .name(ZENDESK_SUBDOMAIN_NAME)
+ .displayName("Zendesk Subdomain Name")
+ .description("Name of the Zendesk subdomain")
+ .expressionLanguageSupported(FLOWFILE_ATTRIBUTES)
+ .required(true)
+ .addValidator(NON_BLANK_VALIDATOR)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_USER = new PropertyDescriptor.Builder()
+ .name(ZENDESK_USER_NAME)
+ .displayName("Zendesk User Name")
+ .description("Login user to Zendesk subdomain")
+ .expressionLanguageSupported(FLOWFILE_ATTRIBUTES)
+ .required(true)
+ .addValidator(NON_BLANK_VALIDATOR)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_PASSWORD = new PropertyDescriptor.Builder()
+ .name(ZENDESK_PASSWORD_NAME)
+ .displayName("Zendesk Password")
+ .description("Password of Zendesk login user. Leave empty if token is provided.")
+ .expressionLanguageSupported(FLOWFILE_ATTRIBUTES)
+ .sensitive(true)
+ .required(false)
+ .addValidator(NON_EMPTY_VALIDATOR)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_TOKEN = new PropertyDescriptor.Builder()
+ .name(ZENDESK_TOKEN_NAME)
+ .displayName("Zendesk Token")
+ .description("Auth token for Zendesk login user. Leave empty if password is provided.")
+ .expressionLanguageSupported(FLOWFILE_ATTRIBUTES)
+ .sensitive(true)
+ .required(false)
+ .addValidator(NON_EMPTY_VALIDATOR)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_EXPORT_METHOD = new PropertyDescriptor.Builder()
+ .name(ZENDESK_EXPORT_METHOD_NAME)
+ .displayName("Zendesk Export Method")
+ .description("Method for incremental export.")
+ .required(true)
+ .allowableValues(ZendeskExportMethod.class)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_RESOURCE = new PropertyDescriptor.Builder()
+ .name(ZENDESK_RESOURCE_NAME)
+ .displayName("Zendesk Resource")
+ .description("The particular Zendesk resource which is meant to be exported")
+ .required(true)
+ .allowableValues(ZendeskResource.class)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_QUERY_START_TIMESTAMP = new PropertyDescriptor.Builder()
+ .name(ZENDESK_QUERY_START_TIMESTAMP_NAME)
+ .displayName("Zendesk Query Start Timestamp")
+ .description("Initial timestamp to query Zendesk API from in Unix timestamp seconds format")
+ .addValidator(POSITIVE_LONG_VALIDATOR)
+ .expressionLanguageSupported(FLOWFILE_ATTRIBUTES)
+ .required(true)
+ .build();
+
+ private static final List<PropertyDescriptor> DESCRIPTORS = unmodifiableList(asList(
+ WEB_CLIENT_SERVICE_PROVIDER,
+ ZENDESK_SUBDOMAIN,
+ ZENDESK_USER,
+ ZENDESK_PASSWORD,
+ ZENDESK_TOKEN,
+ ZENDESK_EXPORT_METHOD,
+ ZENDESK_RESOURCE,
+ ZENDESK_QUERY_START_TIMESTAMP
+ ));
+
+ private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
+ private static final JsonFactory JSON_FACTORY = OBJECT_MAPPER.getFactory();
+
+ private volatile WebClientServiceProvider webClientServiceProvider;
+
+ @Override
+ public Set<Relationship> getRelationships() {
+ return RELATIONSHIPS;
+ }
+
+ @Override
+ public List<PropertyDescriptor> getSupportedPropertyDescriptors() {
+ return DESCRIPTORS;
+ }
+
+ @Override
+ protected Collection<ValidationResult> customValidate(ValidationContext validationContext) {
+ List<ValidationResult> results = new ArrayList<>(2);
+
+ String password = validationContext.getProperty(ZENDESK_PASSWORD).evaluateAttributeExpressions().getValue();
+ String token = validationContext.getProperty(ZENDESK_TOKEN).evaluateAttributeExpressions().getValue();
+ if (isNotBlank(password) && isNotBlank(token)) {
Review Comment:
Do we actually need this? I would expect the non-empty validator to do the job
##########
nifi-nar-bundles/nifi-zendesk-bundle/nifi-zendesk-processors/src/main/java/org/apache/nifi/processors/zendesk/GetZendesk.java:
##########
@@ -0,0 +1,375 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+package org.apache.nifi.processors.zendesk;
+
+import static com.fasterxml.jackson.core.JsonEncoding.UTF8;
+import static com.fasterxml.jackson.core.JsonToken.FIELD_NAME;
+import static com.fasterxml.jackson.core.JsonToken.VALUE_NULL;
+import static java.lang.String.format;
+import static java.nio.charset.StandardCharsets.UTF_8;
+import static java.util.Arrays.asList;
+import static java.util.Base64.getEncoder;
+import static java.util.Collections.singleton;
+import static java.util.Collections.singletonMap;
+import static java.util.Collections.unmodifiableList;
+import static org.apache.nifi.annotation.behavior.InputRequirement.Requirement.INPUT_FORBIDDEN;
+import static org.apache.nifi.components.state.Scope.CLUSTER;
+import static org.apache.nifi.expression.ExpressionLanguageScope.FLOWFILE_ATTRIBUTES;
+import static org.apache.nifi.processor.util.StandardValidators.NON_BLANK_VALIDATOR;
+import static org.apache.nifi.processor.util.StandardValidators.NON_EMPTY_VALIDATOR;
+import static org.apache.nifi.processor.util.StandardValidators.POSITIVE_LONG_VALIDATOR;
+import static org.apache.nifi.processors.zendesk.GetZendesk.RECORD_COUNT_ATTRIBUTE_NAME;
+import static org.apache.nifi.util.StringUtils.isNotBlank;
+import static org.apache.nifi.web.client.api.HttpResponseStatus.OK;
+
+import com.fasterxml.jackson.core.JsonFactory;
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import java.io.IOException;
+import java.io.UncheckedIOException;
+import java.net.URI;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.Set;
+import java.util.concurrent.atomic.AtomicInteger;
+import org.apache.commons.io.IOUtils;
+import org.apache.nifi.annotation.behavior.InputRequirement;
+import org.apache.nifi.annotation.behavior.PrimaryNodeOnly;
+import org.apache.nifi.annotation.behavior.Stateful;
+import org.apache.nifi.annotation.behavior.TriggerSerially;
+import org.apache.nifi.annotation.behavior.WritesAttribute;
+import org.apache.nifi.annotation.behavior.WritesAttributes;
+import org.apache.nifi.annotation.configuration.DefaultSettings;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.annotation.lifecycle.OnScheduled;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.components.ValidationContext;
+import org.apache.nifi.components.ValidationResult;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.processor.AbstractProcessor;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.io.OutputStreamCallback;
+import org.apache.nifi.web.client.api.HttpResponseEntity;
+import org.apache.nifi.web.client.api.HttpUriBuilder;
+import org.apache.nifi.web.client.provider.api.WebClientServiceProvider;
+
+@PrimaryNodeOnly
+@TriggerSerially
+@InputRequirement(INPUT_FORBIDDEN)
+@DefaultSettings(yieldDuration = "20 sec")
+@Tags({"zendesk"})
+@CapabilityDescription("Incrementally fetches data from Zendesk API")
+@Stateful(scopes = CLUSTER, description = "Paging cursor for Zendesk API is stored. Cursor is updated after each successful request.")
+@WritesAttributes({
+ @WritesAttribute(attribute = RECORD_COUNT_ATTRIBUTE_NAME, description = "The number of records fetched by the processor")})
+public class GetZendesk extends AbstractProcessor {
+
+ static final int HTTP_TOO_MANY_REQUESTS = 429;
+ static final String RECORD_COUNT_ATTRIBUTE_NAME = "record.count";
+
+ static final String REL_SUCCESS_NAME = "success";
+ static final String WEB_CLIENT_SERVICE_PROVIDER_NAME = "web-client-service-provider";
+ static final String ZENDESK_SUBDOMAIN_NAME = "zendesk-subdomain";
+ static final String ZENDESK_USER_NAME = "zendesk-user";
+ static final String ZENDESK_PASSWORD_NAME = "zendesk-password";
+ static final String ZENDESK_TOKEN_NAME = "zendesk-token";
+ static final String ZENDESK_EXPORT_METHOD_NAME = "zendesk-export-method";
+ static final String ZENDESK_RESOURCE_NAME = "zendesk-resource";
+ static final String ZENDESK_QUERY_START_TIMESTAMP_NAME = "zendesk-query-start-timestamp";
+
+ private static final String HTTPS = "https";
+ private static final String AUTHORIZATION_HEADER_NAME = "Authorization";
+ private static final String BASIC_AUTH_PREFIX = "Basic ";
+ private static final String ZENDESK_HOST_TEMPLATE = "%s.zendesk.com";
+ private static final String ZENDESK_USERNAME_WITH_TOKEN_TEMPLATE = "%s/token";
+
+ private static final Relationship REL_SUCCESS = new Relationship.Builder()
+ .name(REL_SUCCESS_NAME)
+ .description("For FlowFiles created as a result of a successful HTTP request.")
+ .build();
+
+ private static final Set<Relationship> RELATIONSHIPS = singleton(REL_SUCCESS);
+
+ private static final PropertyDescriptor WEB_CLIENT_SERVICE_PROVIDER = new PropertyDescriptor.Builder()
+ .name(WEB_CLIENT_SERVICE_PROVIDER_NAME)
+ .displayName("Web Client Service Provider")
+ .description("Controller service for HTTP client operations")
+ .identifiesControllerService(WebClientServiceProvider.class)
+ .required(true)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_SUBDOMAIN = new PropertyDescriptor.Builder()
+ .name(ZENDESK_SUBDOMAIN_NAME)
+ .displayName("Zendesk Subdomain Name")
+ .description("Name of the Zendesk subdomain")
+ .expressionLanguageSupported(FLOWFILE_ATTRIBUTES)
+ .required(true)
+ .addValidator(NON_BLANK_VALIDATOR)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_USER = new PropertyDescriptor.Builder()
+ .name(ZENDESK_USER_NAME)
+ .displayName("Zendesk User Name")
+ .description("Login user to Zendesk subdomain")
+ .expressionLanguageSupported(FLOWFILE_ATTRIBUTES)
+ .required(true)
+ .addValidator(NON_BLANK_VALIDATOR)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_PASSWORD = new PropertyDescriptor.Builder()
+ .name(ZENDESK_PASSWORD_NAME)
+ .displayName("Zendesk Password")
+ .description("Password of Zendesk login user. Leave empty if token is provided.")
+ .expressionLanguageSupported(FLOWFILE_ATTRIBUTES)
+ .sensitive(true)
+ .required(false)
+ .addValidator(NON_EMPTY_VALIDATOR)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_TOKEN = new PropertyDescriptor.Builder()
+ .name(ZENDESK_TOKEN_NAME)
+ .displayName("Zendesk Token")
+ .description("Auth token for Zendesk login user. Leave empty if password is provided.")
+ .expressionLanguageSupported(FLOWFILE_ATTRIBUTES)
+ .sensitive(true)
+ .required(false)
+ .addValidator(NON_EMPTY_VALIDATOR)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_EXPORT_METHOD = new PropertyDescriptor.Builder()
+ .name(ZENDESK_EXPORT_METHOD_NAME)
+ .displayName("Zendesk Export Method")
+ .description("Method for incremental export.")
+ .required(true)
+ .allowableValues(ZendeskExportMethod.class)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_RESOURCE = new PropertyDescriptor.Builder()
+ .name(ZENDESK_RESOURCE_NAME)
+ .displayName("Zendesk Resource")
+ .description("The particular Zendesk resource which is meant to be exported")
+ .required(true)
+ .allowableValues(ZendeskResource.class)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_QUERY_START_TIMESTAMP = new PropertyDescriptor.Builder()
+ .name(ZENDESK_QUERY_START_TIMESTAMP_NAME)
+ .displayName("Zendesk Query Start Timestamp")
+ .description("Initial timestamp to query Zendesk API from in Unix timestamp seconds format")
+ .addValidator(POSITIVE_LONG_VALIDATOR)
+ .expressionLanguageSupported(FLOWFILE_ATTRIBUTES)
+ .required(true)
+ .build();
+
+ private static final List<PropertyDescriptor> DESCRIPTORS = unmodifiableList(asList(
+ WEB_CLIENT_SERVICE_PROVIDER,
+ ZENDESK_SUBDOMAIN,
+ ZENDESK_USER,
+ ZENDESK_PASSWORD,
+ ZENDESK_TOKEN,
+ ZENDESK_EXPORT_METHOD,
+ ZENDESK_RESOURCE,
+ ZENDESK_QUERY_START_TIMESTAMP
+ ));
+
+ private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
+ private static final JsonFactory JSON_FACTORY = OBJECT_MAPPER.getFactory();
+
+ private volatile WebClientServiceProvider webClientServiceProvider;
+
+ @Override
+ public Set<Relationship> getRelationships() {
+ return RELATIONSHIPS;
+ }
+
+ @Override
+ public List<PropertyDescriptor> getSupportedPropertyDescriptors() {
+ return DESCRIPTORS;
+ }
+
+ @Override
+ protected Collection<ValidationResult> customValidate(ValidationContext validationContext) {
+ List<ValidationResult> results = new ArrayList<>(2);
+
+ String password = validationContext.getProperty(ZENDESK_PASSWORD).evaluateAttributeExpressions().getValue();
+ String token = validationContext.getProperty(ZENDESK_TOKEN).evaluateAttributeExpressions().getValue();
+ if (isNotBlank(password) && isNotBlank(token)) {
+ results.add(new ValidationResult.Builder()
+ .subject(ZENDESK_PASSWORD_NAME)
+ .valid(false)
+ .explanation("Either password or token should be set.")
+ .build());
+ }
+
+ ZendeskExportMethod exportMethod = ZendeskExportMethod.forName(validationContext.getProperty(ZENDESK_EXPORT_METHOD).getValue());
+ ZendeskResource zendeskResource = ZendeskResource.forName(validationContext.getProperty(ZENDESK_RESOURCE).getValue());
+ if (!zendeskResource.supportsExportMethod(exportMethod)) {
+ results.add(new ValidationResult.Builder()
+ .subject(ZENDESK_EXPORT_METHOD_NAME)
+ .valid(false)
+ .explanation("Not supported export method for resource.")
+ .build());
+ }
+
+ return results;
+ }
+
+ @OnScheduled
+ public void onScheduled(ProcessContext context) {
+ webClientServiceProvider = context.getProperty(WEB_CLIENT_SERVICE_PROVIDER).asControllerService(WebClientServiceProvider.class);
+ }
+
+ @Override
+ public void onTrigger(ProcessContext context, ProcessSession session) {
+ ZendeskResource zendeskResource = ZendeskResource.forName(context.getProperty(ZENDESK_RESOURCE).getValue());
+ ZendeskExportMethod exportMethod = ZendeskExportMethod.forName(context.getProperty(ZENDESK_EXPORT_METHOD).getValue());
+
+ URI uri = createUri(context, zendeskResource, exportMethod);
+ HttpResponseEntity response = performQuery(context, uri);
+
+ if (response.statusCode() == OK.getCode()) {
+ AtomicInteger resultCount = new AtomicInteger(0);
+ FlowFile createdFlowFile = session.write(
+ session.create(),
+ httpResponseParser(context, response, zendeskResource, exportMethod, resultCount));
+ int recordCount = resultCount.get();
+ if (recordCount > 0) {
+ FlowFile updatedFlowFile = session.putAttribute(createdFlowFile, RECORD_COUNT_ATTRIBUTE_NAME, Integer.toString(recordCount));
+ session.getProvenanceReporter().receive(updatedFlowFile, uri.toString());
+ session.transfer(updatedFlowFile, REL_SUCCESS);
+ } else {
+ session.remove(createdFlowFile);
+ }
+ } else if (response.statusCode() == HTTP_TOO_MANY_REQUESTS) {
+ context.yield();
+ throw new ProcessException(format("Rate limit exceeded, yielding before retrying request."));
Review Comment:
What's the goal of throwing here?
ProcessSession is going to catch this exception, roll back the session and make the processor yield anyway. But there is no flowfile related operation in this scenario to roll back, so other than logging, nothing is going to happen here.
##########
nifi-nar-bundles/nifi-zendesk-bundle/nifi-zendesk-processors/src/main/java/org/apache/nifi/processors/zendesk/GetZendesk.java:
##########
@@ -0,0 +1,375 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+package org.apache.nifi.processors.zendesk;
+
+import static com.fasterxml.jackson.core.JsonEncoding.UTF8;
+import static com.fasterxml.jackson.core.JsonToken.FIELD_NAME;
+import static com.fasterxml.jackson.core.JsonToken.VALUE_NULL;
+import static java.lang.String.format;
+import static java.nio.charset.StandardCharsets.UTF_8;
+import static java.util.Arrays.asList;
+import static java.util.Base64.getEncoder;
+import static java.util.Collections.singleton;
+import static java.util.Collections.singletonMap;
+import static java.util.Collections.unmodifiableList;
+import static org.apache.nifi.annotation.behavior.InputRequirement.Requirement.INPUT_FORBIDDEN;
+import static org.apache.nifi.components.state.Scope.CLUSTER;
+import static org.apache.nifi.expression.ExpressionLanguageScope.FLOWFILE_ATTRIBUTES;
+import static org.apache.nifi.processor.util.StandardValidators.NON_BLANK_VALIDATOR;
+import static org.apache.nifi.processor.util.StandardValidators.NON_EMPTY_VALIDATOR;
+import static org.apache.nifi.processor.util.StandardValidators.POSITIVE_LONG_VALIDATOR;
+import static org.apache.nifi.processors.zendesk.GetZendesk.RECORD_COUNT_ATTRIBUTE_NAME;
+import static org.apache.nifi.util.StringUtils.isNotBlank;
+import static org.apache.nifi.web.client.api.HttpResponseStatus.OK;
+
+import com.fasterxml.jackson.core.JsonFactory;
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import java.io.IOException;
+import java.io.UncheckedIOException;
+import java.net.URI;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.Set;
+import java.util.concurrent.atomic.AtomicInteger;
+import org.apache.commons.io.IOUtils;
+import org.apache.nifi.annotation.behavior.InputRequirement;
+import org.apache.nifi.annotation.behavior.PrimaryNodeOnly;
+import org.apache.nifi.annotation.behavior.Stateful;
+import org.apache.nifi.annotation.behavior.TriggerSerially;
+import org.apache.nifi.annotation.behavior.WritesAttribute;
+import org.apache.nifi.annotation.behavior.WritesAttributes;
+import org.apache.nifi.annotation.configuration.DefaultSettings;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.annotation.lifecycle.OnScheduled;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.components.ValidationContext;
+import org.apache.nifi.components.ValidationResult;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.processor.AbstractProcessor;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.io.OutputStreamCallback;
+import org.apache.nifi.web.client.api.HttpResponseEntity;
+import org.apache.nifi.web.client.api.HttpUriBuilder;
+import org.apache.nifi.web.client.provider.api.WebClientServiceProvider;
+
+@PrimaryNodeOnly
+@TriggerSerially
+@InputRequirement(INPUT_FORBIDDEN)
+@DefaultSettings(yieldDuration = "20 sec")
+@Tags({"zendesk"})
+@CapabilityDescription("Incrementally fetches data from Zendesk API")
+@Stateful(scopes = CLUSTER, description = "Paging cursor for Zendesk API is stored. Cursor is updated after each successful request.")
+@WritesAttributes({
+ @WritesAttribute(attribute = RECORD_COUNT_ATTRIBUTE_NAME, description = "The number of records fetched by the processor")})
+public class GetZendesk extends AbstractProcessor {
+
+ static final int HTTP_TOO_MANY_REQUESTS = 429;
+ static final String RECORD_COUNT_ATTRIBUTE_NAME = "record.count";
+
+ static final String REL_SUCCESS_NAME = "success";
+ static final String WEB_CLIENT_SERVICE_PROVIDER_NAME = "web-client-service-provider";
+ static final String ZENDESK_SUBDOMAIN_NAME = "zendesk-subdomain";
+ static final String ZENDESK_USER_NAME = "zendesk-user";
+ static final String ZENDESK_PASSWORD_NAME = "zendesk-password";
+ static final String ZENDESK_TOKEN_NAME = "zendesk-token";
+ static final String ZENDESK_EXPORT_METHOD_NAME = "zendesk-export-method";
+ static final String ZENDESK_RESOURCE_NAME = "zendesk-resource";
+ static final String ZENDESK_QUERY_START_TIMESTAMP_NAME = "zendesk-query-start-timestamp";
+
+ private static final String HTTPS = "https";
+ private static final String AUTHORIZATION_HEADER_NAME = "Authorization";
+ private static final String BASIC_AUTH_PREFIX = "Basic ";
+ private static final String ZENDESK_HOST_TEMPLATE = "%s.zendesk.com";
+ private static final String ZENDESK_USERNAME_WITH_TOKEN_TEMPLATE = "%s/token";
+
+ private static final Relationship REL_SUCCESS = new Relationship.Builder()
+ .name(REL_SUCCESS_NAME)
+ .description("For FlowFiles created as a result of a successful HTTP request.")
+ .build();
+
+ private static final Set<Relationship> RELATIONSHIPS = singleton(REL_SUCCESS);
+
+ private static final PropertyDescriptor WEB_CLIENT_SERVICE_PROVIDER = new PropertyDescriptor.Builder()
+ .name(WEB_CLIENT_SERVICE_PROVIDER_NAME)
+ .displayName("Web Client Service Provider")
+ .description("Controller service for HTTP client operations")
+ .identifiesControllerService(WebClientServiceProvider.class)
+ .required(true)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_SUBDOMAIN = new PropertyDescriptor.Builder()
+ .name(ZENDESK_SUBDOMAIN_NAME)
+ .displayName("Zendesk Subdomain Name")
+ .description("Name of the Zendesk subdomain")
+ .expressionLanguageSupported(FLOWFILE_ATTRIBUTES)
+ .required(true)
+ .addValidator(NON_BLANK_VALIDATOR)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_USER = new PropertyDescriptor.Builder()
+ .name(ZENDESK_USER_NAME)
+ .displayName("Zendesk User Name")
+ .description("Login user to Zendesk subdomain")
+ .expressionLanguageSupported(FLOWFILE_ATTRIBUTES)
+ .required(true)
+ .addValidator(NON_BLANK_VALIDATOR)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_PASSWORD = new PropertyDescriptor.Builder()
+ .name(ZENDESK_PASSWORD_NAME)
+ .displayName("Zendesk Password")
+ .description("Password of Zendesk login user. Leave empty if token is provided.")
+ .expressionLanguageSupported(FLOWFILE_ATTRIBUTES)
+ .sensitive(true)
+ .required(false)
+ .addValidator(NON_EMPTY_VALIDATOR)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_TOKEN = new PropertyDescriptor.Builder()
+ .name(ZENDESK_TOKEN_NAME)
+ .displayName("Zendesk Token")
+ .description("Auth token for Zendesk login user. Leave empty if password is provided.")
+ .expressionLanguageSupported(FLOWFILE_ATTRIBUTES)
+ .sensitive(true)
+ .required(false)
+ .addValidator(NON_EMPTY_VALIDATOR)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_EXPORT_METHOD = new PropertyDescriptor.Builder()
+ .name(ZENDESK_EXPORT_METHOD_NAME)
+ .displayName("Zendesk Export Method")
+ .description("Method for incremental export.")
+ .required(true)
+ .allowableValues(ZendeskExportMethod.class)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_RESOURCE = new PropertyDescriptor.Builder()
+ .name(ZENDESK_RESOURCE_NAME)
+ .displayName("Zendesk Resource")
+ .description("The particular Zendesk resource which is meant to be exported")
+ .required(true)
+ .allowableValues(ZendeskResource.class)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_QUERY_START_TIMESTAMP = new PropertyDescriptor.Builder()
+ .name(ZENDESK_QUERY_START_TIMESTAMP_NAME)
+ .displayName("Zendesk Query Start Timestamp")
+ .description("Initial timestamp to query Zendesk API from in Unix timestamp seconds format")
+ .addValidator(POSITIVE_LONG_VALIDATOR)
+ .expressionLanguageSupported(FLOWFILE_ATTRIBUTES)
+ .required(true)
+ .build();
+
+ private static final List<PropertyDescriptor> DESCRIPTORS = unmodifiableList(asList(
+ WEB_CLIENT_SERVICE_PROVIDER,
+ ZENDESK_SUBDOMAIN,
+ ZENDESK_USER,
+ ZENDESK_PASSWORD,
+ ZENDESK_TOKEN,
+ ZENDESK_EXPORT_METHOD,
+ ZENDESK_RESOURCE,
+ ZENDESK_QUERY_START_TIMESTAMP
+ ));
+
+ private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
+ private static final JsonFactory JSON_FACTORY = OBJECT_MAPPER.getFactory();
+
+ private volatile WebClientServiceProvider webClientServiceProvider;
+
+ @Override
+ public Set<Relationship> getRelationships() {
+ return RELATIONSHIPS;
+ }
+
+ @Override
+ public List<PropertyDescriptor> getSupportedPropertyDescriptors() {
+ return DESCRIPTORS;
+ }
+
+ @Override
+ protected Collection<ValidationResult> customValidate(ValidationContext validationContext) {
+ List<ValidationResult> results = new ArrayList<>(2);
+
+ String password = validationContext.getProperty(ZENDESK_PASSWORD).evaluateAttributeExpressions().getValue();
+ String token = validationContext.getProperty(ZENDESK_TOKEN).evaluateAttributeExpressions().getValue();
+ if (isNotBlank(password) && isNotBlank(token)) {
+ results.add(new ValidationResult.Builder()
+ .subject(ZENDESK_PASSWORD_NAME)
+ .valid(false)
+ .explanation("Either password or token should be set.")
+ .build());
+ }
+
+ ZendeskExportMethod exportMethod = ZendeskExportMethod.forName(validationContext.getProperty(ZENDESK_EXPORT_METHOD).getValue());
+ ZendeskResource zendeskResource = ZendeskResource.forName(validationContext.getProperty(ZENDESK_RESOURCE).getValue());
+ if (!zendeskResource.supportsExportMethod(exportMethod)) {
+ results.add(new ValidationResult.Builder()
+ .subject(ZENDESK_EXPORT_METHOD_NAME)
+ .valid(false)
+ .explanation("Not supported export method for resource.")
+ .build());
+ }
+
+ return results;
+ }
+
+ @OnScheduled
+ public void onScheduled(ProcessContext context) {
+ webClientServiceProvider = context.getProperty(WEB_CLIENT_SERVICE_PROVIDER).asControllerService(WebClientServiceProvider.class);
+ }
+
+ @Override
+ public void onTrigger(ProcessContext context, ProcessSession session) {
+ ZendeskResource zendeskResource = ZendeskResource.forName(context.getProperty(ZENDESK_RESOURCE).getValue());
+ ZendeskExportMethod exportMethod = ZendeskExportMethod.forName(context.getProperty(ZENDESK_EXPORT_METHOD).getValue());
+
+ URI uri = createUri(context, zendeskResource, exportMethod);
+ HttpResponseEntity response = performQuery(context, uri);
+
+ if (response.statusCode() == OK.getCode()) {
+ AtomicInteger resultCount = new AtomicInteger(0);
+ FlowFile createdFlowFile = session.write(
+ session.create(),
+ httpResponseParser(context, response, zendeskResource, exportMethod, resultCount));
+ int recordCount = resultCount.get();
+ if (recordCount > 0) {
+ FlowFile updatedFlowFile = session.putAttribute(createdFlowFile, RECORD_COUNT_ATTRIBUTE_NAME, Integer.toString(recordCount));
+ session.getProvenanceReporter().receive(updatedFlowFile, uri.toString());
+ session.transfer(updatedFlowFile, REL_SUCCESS);
+ } else {
+ session.remove(createdFlowFile);
+ }
+ } else if (response.statusCode() == HTTP_TOO_MANY_REQUESTS) {
+ context.yield();
+ throw new ProcessException(format("Rate limit exceeded, yielding before retrying request."));
+ } else {
+ getLogger().error("HTTP {} error for uri={} with response={}", response.statusCode(), uri, responseBodyToString(context, response));
Review Comment:
In my opinion we should yield in this case as well.
Or do you think it makes sense to continue querying with high frequency in case we received a http error? (like 503)
##########
nifi-nar-bundles/nifi-zendesk-bundle/nifi-zendesk-processors/src/main/java/org/apache/nifi/processors/zendesk/GetZendesk.java:
##########
@@ -0,0 +1,375 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+package org.apache.nifi.processors.zendesk;
+
+import static com.fasterxml.jackson.core.JsonEncoding.UTF8;
+import static com.fasterxml.jackson.core.JsonToken.FIELD_NAME;
+import static com.fasterxml.jackson.core.JsonToken.VALUE_NULL;
+import static java.lang.String.format;
+import static java.nio.charset.StandardCharsets.UTF_8;
+import static java.util.Arrays.asList;
+import static java.util.Base64.getEncoder;
+import static java.util.Collections.singleton;
+import static java.util.Collections.singletonMap;
+import static java.util.Collections.unmodifiableList;
+import static org.apache.nifi.annotation.behavior.InputRequirement.Requirement.INPUT_FORBIDDEN;
+import static org.apache.nifi.components.state.Scope.CLUSTER;
+import static org.apache.nifi.expression.ExpressionLanguageScope.FLOWFILE_ATTRIBUTES;
+import static org.apache.nifi.processor.util.StandardValidators.NON_BLANK_VALIDATOR;
+import static org.apache.nifi.processor.util.StandardValidators.NON_EMPTY_VALIDATOR;
+import static org.apache.nifi.processor.util.StandardValidators.POSITIVE_LONG_VALIDATOR;
+import static org.apache.nifi.processors.zendesk.GetZendesk.RECORD_COUNT_ATTRIBUTE_NAME;
+import static org.apache.nifi.util.StringUtils.isNotBlank;
+import static org.apache.nifi.web.client.api.HttpResponseStatus.OK;
+
+import com.fasterxml.jackson.core.JsonFactory;
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import java.io.IOException;
+import java.io.UncheckedIOException;
+import java.net.URI;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.Set;
+import java.util.concurrent.atomic.AtomicInteger;
+import org.apache.commons.io.IOUtils;
+import org.apache.nifi.annotation.behavior.InputRequirement;
+import org.apache.nifi.annotation.behavior.PrimaryNodeOnly;
+import org.apache.nifi.annotation.behavior.Stateful;
+import org.apache.nifi.annotation.behavior.TriggerSerially;
+import org.apache.nifi.annotation.behavior.WritesAttribute;
+import org.apache.nifi.annotation.behavior.WritesAttributes;
+import org.apache.nifi.annotation.configuration.DefaultSettings;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.annotation.lifecycle.OnScheduled;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.components.ValidationContext;
+import org.apache.nifi.components.ValidationResult;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.processor.AbstractProcessor;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.io.OutputStreamCallback;
+import org.apache.nifi.web.client.api.HttpResponseEntity;
+import org.apache.nifi.web.client.api.HttpUriBuilder;
+import org.apache.nifi.web.client.provider.api.WebClientServiceProvider;
+
+@PrimaryNodeOnly
+@TriggerSerially
+@InputRequirement(INPUT_FORBIDDEN)
+@DefaultSettings(yieldDuration = "20 sec")
+@Tags({"zendesk"})
+@CapabilityDescription("Incrementally fetches data from Zendesk API")
+@Stateful(scopes = CLUSTER, description = "Paging cursor for Zendesk API is stored. Cursor is updated after each successful request.")
+@WritesAttributes({
+ @WritesAttribute(attribute = RECORD_COUNT_ATTRIBUTE_NAME, description = "The number of records fetched by the processor")})
+public class GetZendesk extends AbstractProcessor {
+
+ static final int HTTP_TOO_MANY_REQUESTS = 429;
+ static final String RECORD_COUNT_ATTRIBUTE_NAME = "record.count";
+
+ static final String REL_SUCCESS_NAME = "success";
+ static final String WEB_CLIENT_SERVICE_PROVIDER_NAME = "web-client-service-provider";
+ static final String ZENDESK_SUBDOMAIN_NAME = "zendesk-subdomain";
+ static final String ZENDESK_USER_NAME = "zendesk-user";
+ static final String ZENDESK_PASSWORD_NAME = "zendesk-password";
+ static final String ZENDESK_TOKEN_NAME = "zendesk-token";
+ static final String ZENDESK_EXPORT_METHOD_NAME = "zendesk-export-method";
+ static final String ZENDESK_RESOURCE_NAME = "zendesk-resource";
+ static final String ZENDESK_QUERY_START_TIMESTAMP_NAME = "zendesk-query-start-timestamp";
+
+ private static final String HTTPS = "https";
+ private static final String AUTHORIZATION_HEADER_NAME = "Authorization";
+ private static final String BASIC_AUTH_PREFIX = "Basic ";
+ private static final String ZENDESK_HOST_TEMPLATE = "%s.zendesk.com";
+ private static final String ZENDESK_USERNAME_WITH_TOKEN_TEMPLATE = "%s/token";
+
+ private static final Relationship REL_SUCCESS = new Relationship.Builder()
+ .name(REL_SUCCESS_NAME)
+ .description("For FlowFiles created as a result of a successful HTTP request.")
+ .build();
+
+ private static final Set<Relationship> RELATIONSHIPS = singleton(REL_SUCCESS);
+
+ private static final PropertyDescriptor WEB_CLIENT_SERVICE_PROVIDER = new PropertyDescriptor.Builder()
+ .name(WEB_CLIENT_SERVICE_PROVIDER_NAME)
+ .displayName("Web Client Service Provider")
+ .description("Controller service for HTTP client operations")
+ .identifiesControllerService(WebClientServiceProvider.class)
+ .required(true)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_SUBDOMAIN = new PropertyDescriptor.Builder()
+ .name(ZENDESK_SUBDOMAIN_NAME)
+ .displayName("Zendesk Subdomain Name")
+ .description("Name of the Zendesk subdomain")
+ .expressionLanguageSupported(FLOWFILE_ATTRIBUTES)
+ .required(true)
+ .addValidator(NON_BLANK_VALIDATOR)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_USER = new PropertyDescriptor.Builder()
+ .name(ZENDESK_USER_NAME)
+ .displayName("Zendesk User Name")
+ .description("Login user to Zendesk subdomain")
+ .expressionLanguageSupported(FLOWFILE_ATTRIBUTES)
+ .required(true)
+ .addValidator(NON_BLANK_VALIDATOR)
+ .build();
+
+ private static final PropertyDescriptor ZENDESK_PASSWORD = new PropertyDescriptor.Builder()
+ .name(ZENDESK_PASSWORD_NAME)
+ .displayName("Zendesk Password")
+ .description("Password of Zendesk login user. Leave empty if token is provided.")
Review Comment:
Some property descriptions have '.' at the end of the sentence while others don't. Please check another processor for reference and either put it everywhere or nowhere!
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