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110 lines
2.9 KiB
110 lines
2.9 KiB
#!/bin/sh |
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# Generate test data repository using the given parameters. |
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# When omitted, we create "gen-many-files-d-w-f.git". |
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# |
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# Usage: [-r repo] [-d depth] [-w width] [-f files] |
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# |
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# -r repo: path to the new repo to be generated |
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# -d depth: the depth of sub-directories |
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# -w width: the number of sub-directories at each level |
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# -f files: the number of files created in each directory |
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# |
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# Note that all files will have the same SHA-1 and each |
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# directory at a level will have the same SHA-1, so we |
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# will potentially have a large index, but not a large |
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# ODB. |
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# |
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# Ballast will be created under "ballast/". |
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EMPTY_BLOB=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 |
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set -e |
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# (5, 10, 9) will create 999,999 ballast files. |
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# (4, 10, 9) will create 99,999 ballast files. |
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depth=5 |
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width=10 |
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files=9 |
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while test "$#" -ne 0 |
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do |
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case "$1" in |
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-r) |
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shift; |
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test "$#" -ne 0 || { echo 'error: -r requires an argument' >&2; exit 1; } |
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repo=$1; |
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shift ;; |
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-d) |
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shift; |
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test "$#" -ne 0 || { echo 'error: -d requires an argument' >&2; exit 1; } |
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depth=$1; |
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shift ;; |
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-w) |
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shift; |
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test "$#" -ne 0 || { echo 'error: -w requires an argument' >&2; exit 1; } |
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width=$1; |
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shift ;; |
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-f) |
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shift; |
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test "$#" -ne 0 || { echo 'error: -f requires an argument' >&2; exit 1; } |
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files=$1; |
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shift ;; |
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*) |
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echo "error: unknown option '$1'" >&2; exit 1 ;; |
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esac |
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done |
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# Inflate the index with thousands of empty files. |
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# usage: dir depth width files |
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fill_index() { |
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awk -v arg_dir=$1 -v arg_depth=$2 -v arg_width=$3 -v arg_files=$4 ' |
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function make_paths(dir, depth, width, files, f, w) { |
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for (f = 1; f <= files; f++) { |
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print dir "/file" f |
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} |
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if (depth > 0) { |
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for (w = 1; w <= width; w++) { |
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make_paths(dir "/dir" w, depth - 1, width, files) |
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} |
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} |
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} |
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END { make_paths(arg_dir, arg_depth, arg_width, arg_files) } |
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' </dev/null | |
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sed "s/^/100644 $EMPTY_BLOB /" | |
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git update-index --index-info |
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return 0 |
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} |
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[ -z "$repo" ] && repo=gen-many-files-$depth.$width.$files.git |
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mkdir $repo |
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cd $repo |
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git init . |
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# Create an initial commit just to define master. |
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touch many-files.empty |
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echo "$depth $width $files" >many-files.params |
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git add many-files.* |
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git commit -q -m params |
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# Create ballast for p0006 based upon the given params and |
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# inflate the index with thousands of empty files and commit. |
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git checkout -b p0006-ballast |
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fill_index "ballast" $depth $width $files |
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git commit -q -m "ballast" |
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nr_files=$(git ls-files | wc -l) |
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# Modify 1 file and commit. |
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echo "$depth $width $files" >>many-files.params |
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git add many-files.params |
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git commit -q -m "ballast plus 1" |
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# Checkout master to put repo in canonical state (because |
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# the perf test may need to clone and enable sparse-checkout |
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# before attempting to checkout a commit with the ballast |
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# (because it may contain 100K directories and 1M files)). |
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git checkout master |
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echo "Repository "$repo" ($depth, $width, $files) created. Ballast $nr_files." |
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exit 0
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