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https://issues.apache.org/jira/browse/DRILL-7437?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17060330#comment-17060330
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ASF GitHub Bot commented on DRILL-7437:
---------------------------------------
cgivre commented on pull request #1892: DRILL-7437: Storage Plugin for Generic
HTTP REST API
URL: https://github.com/apache/drill/pull/1892#discussion_r393133803
##########
File path:
contrib/storage-http/src/main/java/org/apache/drill/exec/store/http/HttpStoragePluginConfig.java
##########
@@ -0,0 +1,90 @@
+/*
+ * 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.drill.exec.store.http;
+
+import org.apache.drill.common.map.CaseInsensitiveMap;
+import org.apache.drill.common.logical.StoragePluginConfigBase;
+import org.apache.drill.shaded.guava.com.google.common.base.Objects;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Optional;
+
+
+@JsonTypeName(HttpStoragePluginConfig.NAME)
+public class HttpStoragePluginConfig extends StoragePluginConfigBase {
+ private static final Logger logger =
LoggerFactory.getLogger(HttpStoragePluginConfig.class);
+
+ public static final String NAME = "http";
+
+ public final Map<String, HttpAPIConfig> connections;
+
+ public final boolean cacheResults;
Review comment:
The OkHTTP library has a caching mechanism [1] which caches HTTP and HTTPS
responses to the filesystem so they may be reused, saving time and bandwidth.
These results are stored to the Drill temp directory.
I saw this feature in OkHTTP and it seemed like a good idea at the time to
allow the user to enable/disable it if it makes sense. The use case I had in
mind was querying some relatively unchanging reference data via API. I was
thinking that it would make sense to minimize the number of HTTP calls and
cache the data locally for a period of time. Again, the library handles the
caching logic, so in theory we don't have to worry about that.
[1] https://square.github.io/okhttp/4.x/okhttp/okhttp3/-cache/
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> Storage Plugin for Generic HTTP REST API
> ----------------------------------------
>
> Key: DRILL-7437
> URL: https://issues.apache.org/jira/browse/DRILL-7437
> Project: Apache Drill
> Issue Type: New Feature
> Reporter: Charles Givre
> Assignee: Charles Givre
> Priority: Minor
> Fix For: Future
>
>
> In many data analytic situations there is a need to obtain reference data
> which is volatile or hosted on a service with a REST API.
> For instance, consider the case of a financial dataset which you want to run
> a currency conversion. Or in the security arena, an organization might have
> a service that returns network information about an IT asset. The goal being
> to enable Drill to quickly incorporate external data that is only accessible
> via REST API.
> This plugin is not intended to be a substitute for dedicated storage plugins
> with systems that use a REST API, such as Apache Solr or ElasticSearch.
> This plugin is based on several projects that were posted on github but never
> completed or submitted to Drill. Posted here for attribution:
> * [https://github.com/kevinlynx/drill-storage-http]
> * [https://github.com/mayunSaicmotor/drill-storage-http]
>
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