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ODP-993 - NIFI-12642|NIFI-12671 Implement AWS option for FileResource…
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...s-abstract-processors/src/main/java/org/apache/nifi/processors/aws/util/RegionUtilV1.java
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| /* | ||
| * 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.aws.util; | ||
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|
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| import com.amazonaws.regions.Region; | ||
| import com.amazonaws.regions.Regions; | ||
| import org.apache.commons.lang3.ArrayUtils; | ||
| import org.apache.nifi.components.AllowableValue; | ||
| import org.apache.nifi.components.PropertyDescriptor; | ||
| import org.apache.nifi.context.PropertyContext; | ||
| import org.apache.nifi.processor.exception.ProcessException; | ||
|
|
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| import java.util.ArrayList; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
|
|
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| /** | ||
| * Utility class for AWS region methods. This class uses AWS SDK v1. | ||
| * | ||
| */ | ||
| public final class RegionUtilV1 { | ||
|
|
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| private RegionUtilV1() { | ||
| } | ||
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| public static final String S3_REGION_ATTRIBUTE = "s3.region" ; | ||
| public static final AllowableValue ATTRIBUTE_DEFINED_REGION = new AllowableValue("attribute-defined-region", | ||
| "Use '" + S3_REGION_ATTRIBUTE + "' Attribute", | ||
| "Uses '" + S3_REGION_ATTRIBUTE + "' FlowFile attribute as region."); | ||
|
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| public static final PropertyDescriptor REGION = new PropertyDescriptor.Builder() | ||
| .name("Region") | ||
| .description("The AWS Region to connect to.") | ||
| .required(true) | ||
| .allowableValues(getAvailableRegions()) | ||
| .defaultValue(createAllowableValue(Regions.DEFAULT_REGION).getValue()) | ||
| .build(); | ||
|
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| public static final PropertyDescriptor S3_REGION = new PropertyDescriptor.Builder() | ||
| .fromPropertyDescriptor(REGION) | ||
| .allowableValues(getAvailableS3Regions()) | ||
| .build(); | ||
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| public static Region parseRegionValue(String regionValue) { | ||
| if (regionValue == null) { | ||
| throw new ProcessException(String.format("[%s] was selected as region source but [%s] attribute does not exist", ATTRIBUTE_DEFINED_REGION, S3_REGION_ATTRIBUTE)); | ||
| } | ||
|
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| try { | ||
| return Region.getRegion(Regions.fromName(regionValue)); | ||
| } catch (Exception e) { | ||
| throw new ProcessException(String.format("The [%s] attribute contains an invalid region value [%s]", S3_REGION_ATTRIBUTE, regionValue), e); | ||
| } | ||
| } | ||
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| public static Region resolveRegion(final PropertyContext context, final Map<String, String> attributes) { | ||
| String regionValue = context.getProperty(S3_REGION).getValue(); | ||
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| if (ATTRIBUTE_DEFINED_REGION.getValue().equals(regionValue)) { | ||
| regionValue = attributes.get(S3_REGION_ATTRIBUTE); | ||
| } | ||
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| return parseRegionValue(regionValue); | ||
| } | ||
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| public static AllowableValue[] getAvailableS3Regions() { | ||
| final AllowableValue[] availableRegions = getAvailableRegions(); | ||
| return ArrayUtils.addAll(availableRegions, ATTRIBUTE_DEFINED_REGION); | ||
| } | ||
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| public static AllowableValue createAllowableValue(final Regions region) { | ||
| return new AllowableValue(region.getName(), region.getDescription(), "AWS Region Code : " + region.getName()); | ||
| } | ||
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| public static AllowableValue[] getAvailableRegions() { | ||
| final List<AllowableValue> values = new ArrayList<>(); | ||
| for (final Regions region : Regions.values()) { | ||
| values.add(createAllowableValue(region)); | ||
| } | ||
| return values.toArray(new AllowableValue[0]); | ||
| } | ||
|
|
||
| } |
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