HDFS-8678. Bring back the feature to view chunks of files in the HDFS file browser. Contributed by Ivo Udelsmann.
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@ -57,8 +57,17 @@
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<h4 class="modal-title" id="file-info-title">File information</h4>
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</div>
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<div class="modal-body" id="file-info-body">
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<a id="file-info-download">Download</a>
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<!--<a id="file-info-preview" style="cursor:pointer">Tail the file (last 32K)</a>-->
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<div class=row>
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<span class="col-xs-4">
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<a id="file-info-download">Download</a>
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</span>
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<span class="col-xs-4">
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<a id="file-info-preview-head" style="cursor:pointer">Head the file (first 32K)</a>
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</span>
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<span class="col-xs-4">
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<a id="file-info-preview-tail" style="cursor:pointer">Tail the file (last 32K)</a>
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</span>
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</div>
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<hr />
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<div class="panel panel-success" id="file-info-blockinfo-panel">
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<div class="panel-heading">
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@ -192,13 +192,40 @@
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var download_url = '/webhdfs/v1' + abs_path + '?op=OPEN';
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$('#file-info-download').attr('href', download_url);
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$('#file-info-preview').click(function() {
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var processPreview = function(url) {
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url += "&noredirect=true";
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$.ajax({
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type: 'GET',
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url: url,
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processData: false,
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crossDomain: true
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}).done(function(data) {
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url = data.Location;
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$.ajax({
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type: 'GET',
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url: url,
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processData: false,
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crossDomain: true
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}).complete(function(data) {
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$('#file-info-preview-body').val(data.responseText);
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$('#file-info-tail').show();
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}).error(function(jqXHR, textStatus, errorThrown) {
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show_err_msg("Couldn't preview the file. " + errorThrown);
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});
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}).error(function(jqXHR, textStatus, errorThrown) {
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show_err_msg("Couldn't find datanode to read file from. " + errorThrown);
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});
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}
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$('#file-info-preview-tail').click(function() {
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var offset = d.fileLength - TAIL_CHUNK_SIZE;
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var url = offset > 0 ? download_url + '&offset=' + offset : download_url;
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$.get(url, function(t) {
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$('#file-info-preview-body').val(t);
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$('#file-info-tail').show();
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}, "text").error(network_error_handler(url));
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processPreview(url);
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});
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$('#file-info-preview-head').click(function() {
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var url = d.fileLength > TAIL_CHUNK_SIZE ? download_url + '&length=' + TAIL_CHUNK_SIZE : download_url;
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processPreview(url);
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});
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if (d.fileLength > 0) {
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