extractError: function extractError()

in lib/services/s3.js [709:764]
51 lines of code
25 McCabe index (conditional complexity)

  extractError: function extractError(resp) {
    var codes = {
      304: 'NotModified',
      403: 'Forbidden',
      400: 'BadRequest',
      404: 'NotFound'
    };

    var req = resp.request;
    var code = resp.httpResponse.statusCode;
    var body = resp.httpResponse.body || '';

    var headers = resp.httpResponse.headers || {};
    var region = headers['x-amz-bucket-region'] || null;
    var bucket = req.params.Bucket || null;
    var bucketRegionCache = req.service.bucketRegionCache;
    if (region && bucket && region !== bucketRegionCache[bucket]) {
      bucketRegionCache[bucket] = region;
    }

    var cachedRegion;
    if (codes[code] && body.length === 0) {
      if (bucket && !region) {
        cachedRegion = bucketRegionCache[bucket] || null;
        if (cachedRegion !== req.httpRequest.region) {
          region = cachedRegion;
        }
      }
      resp.error = AWS.util.error(new Error(), {
        code: codes[code],
        message: null,
        region: region
      });
    } else {
      var data = new AWS.XML.Parser().parse(body.toString());

      if (data.Region && !region) {
        region = data.Region;
        if (bucket && region !== bucketRegionCache[bucket]) {
          bucketRegionCache[bucket] = region;
        }
      } else if (bucket && !region && !data.Region) {
        cachedRegion = bucketRegionCache[bucket] || null;
        if (cachedRegion !== req.httpRequest.region) {
          region = cachedRegion;
        }
      }

      resp.error = AWS.util.error(new Error(), {
        code: data.Code || code,
        message: data.Message || null,
        region: region
      });
    }
    req.service.extractRequestIds(resp);
  },