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Add support for API keys to access Elasticsearch (elastic#38291)
X-Pack security supports built-in authentication service `token-service` that allows access tokens to be used to access Elasticsearch without using Basic authentication. The tokens are generated by `token-service` based on OAuth2 spec. The access token is a short-lived token (defaults to 20m) and refresh token with a lifetime of 24 hours, making them unsuitable for long-lived or recurring tasks where the system might go offline thereby failing refresh of tokens. This commit introduces a built-in authentication service `api-key-service` that adds support for long-lived tokens aka API keys to access Elasticsearch. The `api-key-service` is consulted after `token-service` in the authentication chain. By default, if TLS is enabled then `api-key-service` is also enabled. The service can be disabled using the configuration setting. The API keys:- - by default do not have an expiration but expiration can be configured where the API keys need to be expired after a certain amount of time. - when generated will keep authentication information of the user that generated them. - can be defined with a role describing the privileges for accessing Elasticsearch and will be limited by the role of the user that generated them - can be invalidated via invalidation API - information can be retrieved via a get API - that have been expired or invalidated will be retained for 1 week before being deleted. The expired API keys remover task handles this. Following are the API key management APIs:- 1. Create API Key - `PUT/POST /_security/api_key` 2. Get API key(s) - `GET /_security/api_key` 3. Invalidate API Key(s) `DELETE /_security/api_key` The API keys can be used to access Elasticsearch using `Authorization` header, where the auth scheme is `ApiKey` and the credentials, is the base64 encoding of API key Id and API key separated by a colon. Example:- ``` curl -H "Authorization: ApiKey YXBpLWtleS1pZDphcGkta2V5" http://localhost:9200/_cluster/health ``` Closes elastic#34383
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.../rest-high-level/src/main/java/org/elasticsearch/client/security/CreateApiKeyRequest.java
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| /* | ||
| * Licensed to Elasticsearch under one or more contributor | ||
| * license agreements. See the NOTICE file distributed with | ||
| * this work for additional information regarding copyright | ||
| * ownership. Elasticsearch 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. | ||
| */ | ||
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| package org.elasticsearch.client.security; | ||
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| import org.elasticsearch.client.Validatable; | ||
| import org.elasticsearch.client.security.user.privileges.Role; | ||
| import org.elasticsearch.common.Nullable; | ||
| import org.elasticsearch.common.Strings; | ||
| import org.elasticsearch.common.unit.TimeValue; | ||
| import org.elasticsearch.common.xcontent.ToXContentObject; | ||
| import org.elasticsearch.common.xcontent.XContentBuilder; | ||
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| import java.io.IOException; | ||
| import java.util.List; | ||
| import java.util.Objects; | ||
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| /** | ||
| * Request to create API key | ||
| */ | ||
| public final class CreateApiKeyRequest implements Validatable, ToXContentObject { | ||
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| private final String name; | ||
| private final TimeValue expiration; | ||
| private final List<Role> roles; | ||
| private final RefreshPolicy refreshPolicy; | ||
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| /** | ||
| * Create API Key request constructor | ||
| * @param name name for the API key | ||
| * @param roles list of {@link Role}s | ||
| * @param expiration to specify expiration for the API key | ||
| */ | ||
| public CreateApiKeyRequest(String name, List<Role> roles, @Nullable TimeValue expiration, @Nullable final RefreshPolicy refreshPolicy) { | ||
| if (Strings.hasText(name)) { | ||
| this.name = name; | ||
| } else { | ||
| throw new IllegalArgumentException("name must not be null or empty"); | ||
| } | ||
| this.roles = Objects.requireNonNull(roles, "roles may not be null"); | ||
| this.expiration = expiration; | ||
| this.refreshPolicy = (refreshPolicy == null) ? RefreshPolicy.getDefault() : refreshPolicy; | ||
| } | ||
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| public String getName() { | ||
| return name; | ||
| } | ||
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| public TimeValue getExpiration() { | ||
| return expiration; | ||
| } | ||
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| public List<Role> getRoles() { | ||
| return roles; | ||
| } | ||
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| public RefreshPolicy getRefreshPolicy() { | ||
| return refreshPolicy; | ||
| } | ||
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| @Override | ||
| public int hashCode() { | ||
| return Objects.hash(name, refreshPolicy, roles, expiration); | ||
| } | ||
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| @Override | ||
| public boolean equals(Object o) { | ||
| if (this == o) { | ||
| return true; | ||
| } | ||
| if (o == null || getClass() != o.getClass()) { | ||
| return false; | ||
| } | ||
| final CreateApiKeyRequest that = (CreateApiKeyRequest) o; | ||
| return Objects.equals(name, that.name) && Objects.equals(refreshPolicy, that.refreshPolicy) && Objects.equals(roles, that.roles) | ||
| && Objects.equals(expiration, that.expiration); | ||
| } | ||
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| @Override | ||
| public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException { | ||
| builder.startObject().field("name", name); | ||
| if (expiration != null) { | ||
| builder.field("expiration", expiration.getStringRep()); | ||
| } | ||
| builder.startObject("role_descriptors"); | ||
| for (Role role : roles) { | ||
| builder.startObject(role.getName()); | ||
| if (role.getApplicationPrivileges() != null) { | ||
| builder.field(Role.APPLICATIONS.getPreferredName(), role.getApplicationPrivileges()); | ||
| } | ||
| if (role.getClusterPrivileges() != null) { | ||
| builder.field(Role.CLUSTER.getPreferredName(), role.getClusterPrivileges()); | ||
| } | ||
| if (role.getGlobalPrivileges() != null) { | ||
| builder.field(Role.GLOBAL.getPreferredName(), role.getGlobalPrivileges()); | ||
| } | ||
| if (role.getIndicesPrivileges() != null) { | ||
| builder.field(Role.INDICES.getPreferredName(), role.getIndicesPrivileges()); | ||
| } | ||
| if (role.getMetadata() != null) { | ||
| builder.field(Role.METADATA.getPreferredName(), role.getMetadata()); | ||
| } | ||
| if (role.getRunAsPrivilege() != null) { | ||
| builder.field(Role.RUN_AS.getPreferredName(), role.getRunAsPrivilege()); | ||
| } | ||
| builder.endObject(); | ||
| } | ||
| builder.endObject(); | ||
| return builder.endObject(); | ||
| } | ||
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| } |
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