summaryrefslogtreecommitdiff
path: root/t/t7519
diff options
context:
space:
mode:
Diffstat (limited to 't/t7519')
-rwxr-xr-xt/t7519/fsmonitor-all24
-rwxr-xr-xt/t7519/fsmonitor-none22
-rwxr-xr-xt/t7519/fsmonitor-watchman133
3 files changed, 179 insertions, 0 deletions
diff --git a/t/t7519/fsmonitor-all b/t/t7519/fsmonitor-all
new file mode 100755
index 0000000000..691bc94dc2
--- /dev/null
+++ b/t/t7519/fsmonitor-all
@@ -0,0 +1,24 @@
+#!/bin/sh
+#
+# An test hook script to integrate with git to test fsmonitor.
+#
+# The hook is passed a version (currently 1) and a time in nanoseconds
+# formatted as a string and outputs to stdout all files that have been
+# modified since the given time. Paths must be relative to the root of
+# the working tree and separated by a single NUL.
+#
+#echo "$0 $*" >&2
+
+if test "$#" -ne 2
+then
+ echo "$0: exactly 2 arguments expected" >&2
+ exit 2
+fi
+
+if test "$1" != 1
+then
+ echo "Unsupported core.fsmonitor hook version." >&2
+ exit 1
+fi
+
+echo "/"
diff --git a/t/t7519/fsmonitor-none b/t/t7519/fsmonitor-none
new file mode 100755
index 0000000000..ed9cf5a6a9
--- /dev/null
+++ b/t/t7519/fsmonitor-none
@@ -0,0 +1,22 @@
+#!/bin/sh
+#
+# An test hook script to integrate with git to test fsmonitor.
+#
+# The hook is passed a version (currently 1) and a time in nanoseconds
+# formatted as a string and outputs to stdout all files that have been
+# modified since the given time. Paths must be relative to the root of
+# the working tree and separated by a single NUL.
+#
+#echo "$0 $*" >&2
+
+if test "$#" -ne 2
+then
+ echo "$0: exactly 2 arguments expected" >&2
+ exit 2
+fi
+
+if test "$1" != 1
+then
+ echo "Unsupported core.fsmonitor hook version." >&2
+ exit 1
+fi
diff --git a/t/t7519/fsmonitor-watchman b/t/t7519/fsmonitor-watchman
new file mode 100755
index 0000000000..5514edcf68
--- /dev/null
+++ b/t/t7519/fsmonitor-watchman
@@ -0,0 +1,133 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+use IPC::Open2;
+
+# An example hook script to integrate Watchman
+# (https://facebook.github.io/watchman/) with git to speed up detecting
+# new and modified files.
+#
+# The hook is passed a version (currently 1) and a time in nanoseconds
+# formatted as a string and outputs to stdout all files that have been
+# modified since the given time. Paths must be relative to the root of
+# the working tree and separated by a single NUL.
+#
+# To enable this hook, rename this file to "query-watchman" and set
+# 'git config core.fsmonitor .git/hooks/query-watchman'
+#
+my ($version, $time) = @ARGV;
+#print STDERR "$0 $version $time\n";
+
+# Check the hook interface version
+
+if ($version == 1) {
+ # convert nanoseconds to seconds
+ $time = int $time / 1000000000;
+} else {
+ die "Unsupported query-fsmonitor hook version '$version'.\n" .
+ "Falling back to scanning...\n";
+}
+
+my $git_work_tree;
+if ($^O =~ 'msys' || $^O =~ 'cygwin') {
+ $git_work_tree = Win32::GetCwd();
+ $git_work_tree =~ tr/\\/\//;
+} else {
+ require Cwd;
+ $git_work_tree = Cwd::cwd();
+}
+
+my $retry = 1;
+
+launch_watchman();
+
+sub launch_watchman {
+
+ my $pid = open2(\*CHLD_OUT, \*CHLD_IN, 'watchman -j')
+ or die "open2() failed: $!\n" .
+ "Falling back to scanning...\n";
+
+ # In the query expression below we're asking for names of files that
+ # changed since $time but were not transient (ie created after
+ # $time but no longer exist).
+ #
+ # To accomplish this, we're using the "since" generator to use the
+ # recency index to select candidate nodes and "fields" to limit the
+ # output to file names only. Then we're using the "expression" term to
+ # further constrain the results.
+ #
+ # The category of transient files that we want to ignore will have a
+ # creation clock (cclock) newer than $time_t value and will also not
+ # currently exist.
+
+ my $query = <<" END";
+ ["query", "$git_work_tree", {
+ "since": $time,
+ "fields": ["name"],
+ "expression": ["not", ["allof", ["since", $time, "cclock"], ["not", "exists"]]]
+ }]
+ END
+
+ open (my $fh, ">", ".git/watchman-query.json");
+ print $fh $query;
+ close $fh;
+
+ print CHLD_IN $query;
+ close CHLD_IN;
+ my $response = do {local $/; <CHLD_OUT>};
+
+ open ($fh, ">", ".git/watchman-response.json");
+ print $fh $response;
+ close $fh;
+
+ die "Watchman: command returned no output.\n" .
+ "Falling back to scanning...\n" if $response eq "";
+ die "Watchman: command returned invalid output: $response\n" .
+ "Falling back to scanning...\n" unless $response =~ /^\{/;
+
+ my $json_pkg;
+ eval {
+ require JSON::XS;
+ $json_pkg = "JSON::XS";
+ 1;
+ } or do {
+ require JSON::PP;
+ $json_pkg = "JSON::PP";
+ };
+
+ my $o = $json_pkg->new->utf8->decode($response);
+
+ if ($retry > 0 and $o->{error} and $o->{error} =~ m/unable to resolve root .* directory (.*) is not watched/) {
+ print STDERR "Adding '$git_work_tree' to watchman's watch list.\n";
+ $retry--;
+ qx/watchman watch "$git_work_tree"/;
+ die "Failed to make watchman watch '$git_work_tree'.\n" .
+ "Falling back to scanning...\n" if $? != 0;
+
+ # Watchman will always return all files on the first query so
+ # return the fast "everything is dirty" flag to git and do the
+ # Watchman query just to get it over with now so we won't pay
+ # the cost in git to look up each individual file.
+
+ open ($fh, ">", ".git/watchman-output.out");
+ print "/\0";
+ close $fh;
+
+ print "/\0";
+ eval { launch_watchman() };
+ exit 0;
+ }
+
+ die "Watchman: $o->{error}.\n" .
+ "Falling back to scanning...\n" if $o->{error};
+
+ open ($fh, ">", ".git/watchman-output.out");
+ binmode $fh, ":utf8";
+ print $fh @{$o->{files}};
+ close $fh;
+
+ binmode STDOUT, ":utf8";
+ local $, = "\0";
+ print @{$o->{files}};
+}