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From merrimanr <...@git.apache.org>
Subject [GitHub] incubator-metron pull request #316: METRON-503: Metron REST API
Date Mon, 20 Feb 2017 18:57:51 GMT
Github user merrimanr commented on a diff in the pull request:

    https://github.com/apache/incubator-metron/pull/316#discussion_r102076697
  
    --- Diff: metron-interface/metron-rest/src/main/java/org/apache/metron/rest/controller/HdfsController.java
---
    @@ -0,0 +1,89 @@
    +/**
    + * 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.metron.rest.controller;
    +
    +import io.swagger.annotations.ApiOperation;
    +import io.swagger.annotations.ApiParam;
    +import io.swagger.annotations.ApiResponse;
    +import io.swagger.annotations.ApiResponses;
    +import org.apache.hadoop.fs.Path;
    +import org.apache.metron.rest.RestException;
    +import org.apache.metron.rest.service.HdfsService;
    +import org.springframework.beans.factory.annotation.Autowired;
    +import org.springframework.http.HttpStatus;
    +import org.springframework.http.ResponseEntity;
    +import org.springframework.web.bind.annotation.RequestBody;
    +import org.springframework.web.bind.annotation.RequestMapping;
    +import org.springframework.web.bind.annotation.RequestMethod;
    +import org.springframework.web.bind.annotation.RequestParam;
    +import org.springframework.web.bind.annotation.RestController;
    +
    +import java.util.List;
    +
    +import static java.nio.charset.StandardCharsets.UTF_8;
    +
    +@RestController
    +@RequestMapping("/api/v1/hdfs")
    +public class HdfsController {
    +
    +  @Autowired
    +  private HdfsService hdfsService;
    +
    +  @ApiOperation(value = "Reads a file from HDFS and returns the contents")
    +  @ApiResponse(message = "Returns file contents", code = 200)
    +  @RequestMapping(value = "/list", method = RequestMethod.GET)
    +  ResponseEntity<List<String>> list(@ApiParam(name = "path", value = "Path
to HDFS directory", required = true) @RequestParam String path) throws RestException {
    +    return new ResponseEntity<>(hdfsService.list(new Path(path)), HttpStatus.OK);
    +  }
    +
    +  @ApiOperation(value = "Reads a file from HDFS and returns the contents")
    +  @ApiResponse(message = "Returns file contents", code = 200)
    +  @RequestMapping(method = RequestMethod.GET)
    +  ResponseEntity<String> read(@ApiParam(name = "path", value = "Path to HDFS file",
required = true) @RequestParam String path) throws RestException {
    +    String contents = hdfsService.read(new Path(path));
    +    if (contents != null) {
    +      return new ResponseEntity<>(hdfsService.read(new Path(path)), HttpStatus.OK);
    +    } else {
    +      return new ResponseEntity<>(HttpStatus.NOT_FOUND);
    +    }
    +
    +  }
    +
    +  @ApiOperation(value = "Writes contents to an HDFS file")
    +  @ApiResponse(message = "Contents were written", code = 200)
    +  @RequestMapping(method = RequestMethod.POST)
    +  ResponseEntity<Void> write(@ApiParam(name="path", value="Path to HDFS file",
required=true) @RequestParam String path,
    --- End diff --
    
    Done


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