fsmonitor: add fsmonitor hook scripts for version 2
Version 2 of the fsmonitor hooks is passed the version and an update token and must pass back a last update token to use for subsequent calls to the hook. Signed-off-by: Kevin Willford <Kevin.Willford@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Kevin Willford
Junio C Hamano
parent
8da2c57629
commit
e4e1e8342a
21
t/t7519/fsmonitor-all-v2
Executable file
21
t/t7519/fsmonitor-all-v2
Executable file
@ -0,0 +1,21 @@
|
||||
#!/usr/bin/perl
|
||||
|
||||
use strict;
|
||||
use warnings;
|
||||
#
|
||||
# An test hook script to integrate with git to test fsmonitor.
|
||||
#
|
||||
# The hook is passed a version (currently 2) and since token
|
||||
# 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 $*" >&2
|
||||
my ($version, $last_update_token) = @ARGV;
|
||||
|
||||
if ($version ne 2) {
|
||||
print "Unsupported query-fsmonitor hook version '$version'.\n";
|
||||
exit 1;
|
||||
}
|
||||
|
||||
print "last_update_token\0/\0"
|
||||
173
t/t7519/fsmonitor-watchman-v2
Executable file
173
t/t7519/fsmonitor-watchman-v2
Executable file
@ -0,0 +1,173 @@
|
||||
#!/usr/bin/perl
|
||||
|
||||
use strict;
|
||||
use warnings;
|
||||
use IPC::Open2;
|
||||
|
||||
# An example hook script to integrate Watchman
|
||||
# (https://facebook.github.io/watchman/) with git to speed up detecting
|
||||
# new and modified files.
|
||||
#
|
||||
# The hook is passed a version (currently 2) and last update token
|
||||
# formatted as a string and outputs to stdout a new update token and
|
||||
# all files that have been modified since the update token. Paths must
|
||||
# be relative to the root of the working tree and separated by a single NUL.
|
||||
#
|
||||
# To enable this hook, rename this file to "query-watchman" and set
|
||||
# 'git config core.fsmonitor .git/hooks/query-watchman'
|
||||
#
|
||||
my ($version, $last_update_token) = @ARGV;
|
||||
|
||||
# Uncomment for debugging
|
||||
# print STDERR "$0 $version $last_update_token\n";
|
||||
|
||||
# Check the hook interface version
|
||||
if ($version ne 2) {
|
||||
die "Unsupported query-fsmonitor hook version '$version'.\n" .
|
||||
"Falling back to scanning...\n";
|
||||
}
|
||||
|
||||
my $git_work_tree = get_working_dir();
|
||||
|
||||
my $retry = 1;
|
||||
|
||||
my $json_pkg;
|
||||
eval {
|
||||
require JSON::XS;
|
||||
$json_pkg = "JSON::XS";
|
||||
1;
|
||||
} or do {
|
||||
require JSON::PP;
|
||||
$json_pkg = "JSON::PP";
|
||||
};
|
||||
|
||||
launch_watchman();
|
||||
|
||||
sub launch_watchman {
|
||||
my $o = watchman_query();
|
||||
if (is_work_tree_watched($o)) {
|
||||
output_result($o->{clock}, @{$o->{files}});
|
||||
}
|
||||
}
|
||||
|
||||
sub output_result {
|
||||
my ($clockid, @files) = @_;
|
||||
|
||||
# Uncomment for debugging watchman output
|
||||
# open (my $fh, ">", ".git/watchman-output.out");
|
||||
# binmode $fh, ":utf8";
|
||||
# print $fh "$clockid\n@files\n";
|
||||
# close $fh;
|
||||
|
||||
binmode STDOUT, ":utf8";
|
||||
print $clockid;
|
||||
print "\0";
|
||||
local $, = "\0";
|
||||
print @files;
|
||||
}
|
||||
|
||||
sub watchman_clock {
|
||||
my $response = qx/watchman clock "$git_work_tree"/;
|
||||
die "Failed to get clock id on '$git_work_tree'.\n" .
|
||||
"Falling back to scanning...\n" if $? != 0;
|
||||
|
||||
return $json_pkg->new->utf8->decode($response);
|
||||
}
|
||||
|
||||
sub watchman_query {
|
||||
my $pid = open2(\*CHLD_OUT, \*CHLD_IN, 'watchman -j --no-pretty')
|
||||
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 $last_update_token but not from the .git folder.
|
||||
#
|
||||
# To accomplish this, we're using the "since" generator to use the
|
||||
# recency index to select candidate nodes and "fields" to limit the
|
||||
# output to file names only. Then we're using the "expression" term to
|
||||
# further constrain the results.
|
||||
if (substr($last_update_token, 0, 1) eq "c") {
|
||||
$last_update_token = "\"$last_update_token\"";
|
||||
}
|
||||
my $query = <<" END";
|
||||
["query", "$git_work_tree", {
|
||||
"since": $last_update_token,
|
||||
"fields": ["name"],
|
||||
"expression": ["not", ["dirname", ".git"]]
|
||||
}]
|
||||
END
|
||||
|
||||
# Uncomment for debugging the watchman query
|
||||
# open (my $fh, ">", ".git/watchman-query.json");
|
||||
# print $fh $query;
|
||||
# close $fh;
|
||||
|
||||
print CHLD_IN $query;
|
||||
close CHLD_IN;
|
||||
my $response = do {local $/; <CHLD_OUT>};
|
||||
|
||||
# Uncomment for debugging the watch response
|
||||
# open ($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 =~ /^\{/;
|
||||
|
||||
return $json_pkg->new->utf8->decode($response);
|
||||
}
|
||||
|
||||
sub is_work_tree_watched {
|
||||
my ($output) = @_;
|
||||
my $error = $output->{error};
|
||||
if ($retry > 0 and $error and $error =~ m/unable to resolve root .* directory (.*) is not watched/) {
|
||||
$retry--;
|
||||
my $response = qx/watchman watch "$git_work_tree"/;
|
||||
die "Failed to make watchman watch '$git_work_tree'.\n" .
|
||||
"Falling back to scanning...\n" if $? != 0;
|
||||
$output = $json_pkg->new->utf8->decode($response);
|
||||
$error = $output->{error};
|
||||
die "Watchman: $error.\n" .
|
||||
"Falling back to scanning...\n" if $error;
|
||||
|
||||
# Uncomment for debugging watchman output
|
||||
# open (my $fh, ">", ".git/watchman-output.out");
|
||||
# close $fh;
|
||||
|
||||
# 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.
|
||||
my $o = watchman_clock();
|
||||
$error = $output->{error};
|
||||
|
||||
die "Watchman: $error.\n" .
|
||||
"Falling back to scanning...\n" if $error;
|
||||
|
||||
output_result($o->{clock}, ("/"));
|
||||
$last_update_token = $o->{clock};
|
||||
|
||||
eval { launch_watchman() };
|
||||
return 0;
|
||||
}
|
||||
|
||||
die "Watchman: $error.\n" .
|
||||
"Falling back to scanning...\n" if $error;
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
sub get_working_dir {
|
||||
my $working_dir;
|
||||
if ($^O =~ 'msys' || $^O =~ 'cygwin') {
|
||||
$working_dir = Win32::GetCwd();
|
||||
$working_dir =~ tr/\\/\//;
|
||||
} else {
|
||||
require Cwd;
|
||||
$working_dir = Cwd::cwd();
|
||||
}
|
||||
|
||||
return $working_dir;
|
||||
}
|
||||
@ -8,102 +8,166 @@ use IPC::Open2;
|
||||
# (https://facebook.github.io/watchman/) with git to speed up detecting
|
||||
# new and modified files.
|
||||
#
|
||||
# The hook is passed a version (currently 1) and a time in nanoseconds
|
||||
# formatted as a string and outputs to stdout all files that have been
|
||||
# modified since the given time. Paths must be relative to the root of
|
||||
# the working tree and separated by a single NUL.
|
||||
# The hook is passed a version (currently 2) and last update token
|
||||
# formatted as a string and outputs to stdout a new update token and
|
||||
# all files that have been modified since the update token. Paths must
|
||||
# be relative to the root of the working tree and separated by a single NUL.
|
||||
#
|
||||
# To enable this hook, rename this file to "query-watchman" and set
|
||||
# 'git config core.fsmonitor .git/hooks/query-watchman'
|
||||
#
|
||||
my ($version, $time) = @ARGV;
|
||||
my ($version, $last_update_token) = @ARGV;
|
||||
|
||||
# Uncomment for debugging
|
||||
# print STDERR "$0 $version $last_update_token\n";
|
||||
|
||||
# Check the hook interface version
|
||||
|
||||
if ($version == 1) {
|
||||
# convert nanoseconds to seconds
|
||||
# subtract one second to make sure watchman will return all changes
|
||||
$time = int ($time / 1000000000) - 1;
|
||||
} else {
|
||||
if ($version ne 2) {
|
||||
die "Unsupported query-fsmonitor hook version '$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 $git_work_tree = get_working_dir();
|
||||
|
||||
my $retry = 1;
|
||||
|
||||
my $json_pkg;
|
||||
eval {
|
||||
require JSON::XS;
|
||||
$json_pkg = "JSON::XS";
|
||||
1;
|
||||
} or do {
|
||||
require JSON::PP;
|
||||
$json_pkg = "JSON::PP";
|
||||
};
|
||||
|
||||
launch_watchman();
|
||||
|
||||
sub launch_watchman {
|
||||
my $o = watchman_query();
|
||||
if (is_work_tree_watched($o)) {
|
||||
output_result($o->{clock}, @{$o->{files}});
|
||||
}
|
||||
}
|
||||
|
||||
sub output_result {
|
||||
my ($clockid, @files) = @_;
|
||||
|
||||
# Uncomment for debugging watchman output
|
||||
# open (my $fh, ">", ".git/watchman-output.out");
|
||||
# binmode $fh, ":utf8";
|
||||
# print $fh "$clockid\n@files\n";
|
||||
# close $fh;
|
||||
|
||||
binmode STDOUT, ":utf8";
|
||||
print $clockid;
|
||||
print "\0";
|
||||
local $, = "\0";
|
||||
print @files;
|
||||
}
|
||||
|
||||
sub watchman_clock {
|
||||
my $response = qx/watchman clock "$git_work_tree"/;
|
||||
die "Failed to get clock id on '$git_work_tree'.\n" .
|
||||
"Falling back to scanning...\n" if $? != 0;
|
||||
|
||||
return $json_pkg->new->utf8->decode($response);
|
||||
}
|
||||
|
||||
sub watchman_query {
|
||||
my $pid = open2(\*CHLD_OUT, \*CHLD_IN, 'watchman -j --no-pretty')
|
||||
or die "open2() failed: $!\n" .
|
||||
"Falling back to scanning...\n";
|
||||
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).
|
||||
# changed since $last_update_token but not from the .git folder.
|
||||
#
|
||||
# To accomplish this, we're using the "since" generator to use the
|
||||
# recency index to select candidate nodes and "fields" to limit the
|
||||
# output to file names only.
|
||||
|
||||
# output to file names only. Then we're using the "expression" term to
|
||||
# further constrain the results.
|
||||
if (substr($last_update_token, 0, 1) eq "c") {
|
||||
$last_update_token = "\"$last_update_token\"";
|
||||
}
|
||||
my $query = <<" END";
|
||||
["query", "$git_work_tree", {
|
||||
"since": $time,
|
||||
"fields": ["name"]
|
||||
"since": $last_update_token,
|
||||
"fields": ["name"],
|
||||
"expression": ["not", ["dirname", ".git"]]
|
||||
}]
|
||||
END
|
||||
|
||||
# Uncomment for debugging the watchman query
|
||||
# open (my $fh, ">", ".git/watchman-query.json");
|
||||
# print $fh $query;
|
||||
# close $fh;
|
||||
|
||||
print CHLD_IN $query;
|
||||
close CHLD_IN;
|
||||
my $response = do {local $/; <CHLD_OUT>};
|
||||
|
||||
# Uncomment for debugging the watch response
|
||||
# open ($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 "";
|
||||
"Falling back to scanning...\n" if $response eq "";
|
||||
die "Watchman: command returned invalid output: $response\n" .
|
||||
"Falling back to scanning...\n" unless $response =~ /^\{/;
|
||||
"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";
|
||||
};
|
||||
return $json_pkg->new->utf8->decode($response);
|
||||
}
|
||||
|
||||
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";
|
||||
sub is_work_tree_watched {
|
||||
my ($output) = @_;
|
||||
my $error = $output->{error};
|
||||
if ($retry > 0 and $error and $error =~ m/unable to resolve root .* directory (.*) is not watched/) {
|
||||
$retry--;
|
||||
qx/watchman watch "$git_work_tree"/;
|
||||
my $response = qx/watchman watch "$git_work_tree"/;
|
||||
die "Failed to make watchman watch '$git_work_tree'.\n" .
|
||||
"Falling back to scanning...\n" if $? != 0;
|
||||
$output = $json_pkg->new->utf8->decode($response);
|
||||
$error = $output->{error};
|
||||
die "Watchman: $error.\n" .
|
||||
"Falling back to scanning...\n" if $error;
|
||||
|
||||
# Uncomment for debugging watchman output
|
||||
# open (my $fh, ">", ".git/watchman-output.out");
|
||||
# close $fh;
|
||||
|
||||
# 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.
|
||||
print "/\0";
|
||||
my $o = watchman_clock();
|
||||
$error = $output->{error};
|
||||
|
||||
die "Watchman: $error.\n" .
|
||||
"Falling back to scanning...\n" if $error;
|
||||
|
||||
output_result($o->{clock}, ("/"));
|
||||
$last_update_token = $o->{clock};
|
||||
|
||||
eval { launch_watchman() };
|
||||
exit 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
die "Watchman: $o->{error}.\n" .
|
||||
"Falling back to scanning...\n" if $o->{error};
|
||||
die "Watchman: $error.\n" .
|
||||
"Falling back to scanning...\n" if $error;
|
||||
|
||||
binmode STDOUT, ":utf8";
|
||||
local $, = "\0";
|
||||
print @{$o->{files}};
|
||||
return 1;
|
||||
}
|
||||
|
||||
sub get_working_dir {
|
||||
my $working_dir;
|
||||
if ($^O =~ 'msys' || $^O =~ 'cygwin') {
|
||||
$working_dir = Win32::GetCwd();
|
||||
$working_dir =~ tr/\\/\//;
|
||||
} else {
|
||||
require Cwd;
|
||||
$working_dir = Cwd::cwd();
|
||||
}
|
||||
|
||||
return $working_dir;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user