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WIP: Clear the output directory based on a placeholder file #2998

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WIP: Clear the output directory based on a placeholder file #2998

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13 changes: 11 additions & 2 deletions base/cvd/cuttlefish/package/rules.bzl
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Original file line number Diff line number Diff line change
Expand Up @@ -56,6 +56,15 @@ def _package_files_impl(ctx):

path_to_declared_file = dict()

placeholder_clear_dir = ctx.actions.declare_file(ctx.attr.base_dir + ".placeholder")
full_base_dir = placeholder_clear_dir.dirname + "/" + ctx.attr.base_dir
ctx.actions.run_shell(
mnemonic = "ClearOutputDirectory",
command = "rm -r " + full_base_dir + " && touch " + placeholder_clear_dir.path,
inputs = [_file_from_label(src) for src in ctx.attr.package_file_to_src.values()],
outputs = [placeholder_clear_dir],
)

for (dst, src) in ctx.attr.package_file_to_src.items():
out_file = ctx.actions.declare_file(ctx.attr.base_dir + '/' + dst)

Expand All @@ -69,7 +78,7 @@ def _package_files_impl(ctx):
ctx.actions.run_shell(
mnemonic = "MakeOutputDir",
outputs = [out_file],
inputs = [input_file],
inputs = [placeholder_clear_dir, input_file],
command = "mkdir -p " + out_file.dirname + " && cp " + input_file.path + " " + out_file.path,
)

Expand All @@ -90,7 +99,7 @@ def _package_files_impl(ctx):
ctx.actions.run_shell(
mnemonic = "MakeOutputDir",
outputs = [dst_file],
inputs = [src_file],
inputs = [placeholder_clear_dir, src_file],
command = "mkdir -p " + dst_file.dirname + " && ln -s " + relative_target + " " + dst_file.path,
)

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