mirror of
https://github.com/containers/podman
synced 2024-10-20 17:23:30 +00:00
355 lines
11 KiB
Perl
Executable file
355 lines
11 KiB
Perl
Executable file
#!/usr/bin/perl
|
|
#
|
|
# swagger-check - Look for inconsistencies between swagger and source code
|
|
#
|
|
package LibPod::SwaggerCheck;
|
|
|
|
use v5.14;
|
|
use strict;
|
|
use warnings;
|
|
|
|
use File::Find;
|
|
|
|
(our $ME = $0) =~ s|.*/||;
|
|
(our $VERSION = '$Revision: 1.7 $ ') =~ tr/[0-9].//cd;
|
|
|
|
# For debugging, show data structures using DumpTree($var)
|
|
#use Data::TreeDumper; $Data::TreeDumper::Displayaddress = 0;
|
|
|
|
###############################################################################
|
|
# BEGIN user-customizable section
|
|
|
|
our $Default_Dir = 'pkg/api/server';
|
|
|
|
# END user-customizable section
|
|
###############################################################################
|
|
|
|
###############################################################################
|
|
# BEGIN boilerplate args checking, usage messages
|
|
|
|
sub usage {
|
|
print <<"END_USAGE";
|
|
Usage: $ME [OPTIONS] DIRECTORY-TO-CHECK
|
|
|
|
$ME scans all .go files under the given DIRECTORY-TO-CHECK
|
|
(default: $Default_Dir), looking for lines of the form 'r.Handle(...)'
|
|
or 'r.HandleFunc(...)'. For each such line, we check for a preceding
|
|
swagger comment line and verify that the comment line matches the
|
|
declarations in the r.Handle() invocation.
|
|
|
|
For example, the following would be a correctly-matching pair of lines:
|
|
|
|
// swagger:operation GET /images/json compat getImages
|
|
r.Handle(VersionedPath("/images/json"), s.APIHandler(compat.GetImages)).Methods(http.MethodGet)
|
|
|
|
...because http.MethodGet matches GET in the comment, the endpoint
|
|
is /images/json in both cases, the APIHandler() says "compat" so
|
|
that's the swagger tag, and the swagger operation name is the
|
|
same as the APIHandler but with a lower-case first letter.
|
|
|
|
The following is an inconsistency as reported by this script:
|
|
|
|
pkg/api/server/register_info.go:
|
|
- // swagger:operation GET /info libpod libpodGetInfo
|
|
+ // ................. ... ..... compat
|
|
r.Handle(VersionedPath("/info"), s.APIHandler(compat.GetInfo)).Methods(http.MethodGet)
|
|
|
|
...because APIHandler() says 'compat' but the swagger comment
|
|
says 'libpod'.
|
|
|
|
OPTIONS:
|
|
|
|
-v, --verbose show verbose progress indicators
|
|
-n, --dry-run make no actual changes
|
|
|
|
--help display this message
|
|
--version display program name and version
|
|
END_USAGE
|
|
|
|
exit;
|
|
}
|
|
|
|
# Command-line options. Note that this operates directly on @ARGV !
|
|
our $debug = 0;
|
|
our $force = 0;
|
|
our $verbose = 0;
|
|
our $NOT = ''; # print "blahing the blah$NOT\n" if $debug
|
|
sub handle_opts {
|
|
use Getopt::Long;
|
|
GetOptions(
|
|
'debug!' => \$debug,
|
|
'dry-run|n!' => sub { $NOT = ' [NOT]' },
|
|
'force' => \$force,
|
|
'verbose|v' => \$verbose,
|
|
|
|
help => \&usage,
|
|
man => \&man,
|
|
version => sub { print "$ME version $VERSION\n"; exit 0 },
|
|
) or die "Try `$ME --help' for help\n";
|
|
}
|
|
|
|
# END boilerplate args checking, usage messages
|
|
###############################################################################
|
|
|
|
############################## CODE BEGINS HERE ###############################
|
|
|
|
my $exit_status = 0;
|
|
|
|
# The term is "modulino".
|
|
__PACKAGE__->main() unless caller();
|
|
|
|
# Main code.
|
|
sub main {
|
|
# Note that we operate directly on @ARGV, not on function parameters.
|
|
# This is deliberate: it's because Getopt::Long only operates on @ARGV
|
|
# and there's no clean way to make it use @_.
|
|
handle_opts(); # will set package globals
|
|
|
|
# Fetch command-line arguments. Barf if too many.
|
|
my $dir = shift(@ARGV) || $Default_Dir;
|
|
die "$ME: Too many arguments; try $ME --help\n" if @ARGV;
|
|
|
|
# Find and act upon all matching files
|
|
find { wanted => sub { finder(@_) }, no_chdir => 1 }, $dir;
|
|
|
|
exit $exit_status;
|
|
}
|
|
|
|
|
|
############
|
|
# finder # File::Find action - looks for 'r.Handle' or 'r.HandleFunc'
|
|
############
|
|
sub finder {
|
|
my $path = $File::Find::name;
|
|
return if $path =~ m|/\.|; # skip dotfiles
|
|
return unless $path =~ /\.go$/; # Only want .go files
|
|
|
|
print $path, "\n" if $debug;
|
|
|
|
# Read each .go file. Keep a running tally of all '// comment' lines;
|
|
# if we see a 'r.Handle()' or 'r.HandleFunc()' line, pass it + comments
|
|
# to analysis function.
|
|
open my $in, '<', $path
|
|
or die "$ME: Cannot read $path: $!\n";
|
|
my @comments;
|
|
while (my $line = <$in>) {
|
|
if ($line =~ m!^\s*//!) {
|
|
push @comments, $line;
|
|
}
|
|
else {
|
|
# Not a comment line. If it's an r.Handle*() one, process it.
|
|
if ($line =~ m!^\s*r\.Handle(Func)?\(!) {
|
|
handle_handle($path, $line, @comments)
|
|
or $exit_status = 1;
|
|
}
|
|
|
|
# Reset comments
|
|
@comments = ();
|
|
}
|
|
}
|
|
close $in;
|
|
}
|
|
|
|
|
|
###################
|
|
# handle_handle # Cross-check a 'r.Handle*' declaration against swagger
|
|
###################
|
|
#
|
|
# Returns false if swagger comment is inconsistent with function call,
|
|
# true if it matches or if there simply isn't a swagger comment.
|
|
#
|
|
sub handle_handle {
|
|
my $path = shift; # for error messages only
|
|
my $line = shift; # in: the r.Handle* line
|
|
my @comments = @_; # in: preceding comment lines
|
|
|
|
# Preserve the original line, so we can show it in comments
|
|
my $line_orig = $line;
|
|
|
|
# Strip off the 'r.Handle*(' and leading whitespace; preserve the latter
|
|
$line =~ s!^(\s*)r\.Handle(Func)?\(!!
|
|
or die "$ME: INTERNAL ERROR! Got '$line'!\n";
|
|
my $indent = $1;
|
|
|
|
# Some have VersionedPath, some don't. Doesn't seem to make a difference
|
|
# in terms of swagger, so let's just ignore it.
|
|
$line =~ s!^VersionedPath\(([^\)]+)\)!$1!;
|
|
$line =~ m!^"(/[^"]+)",!
|
|
or die "$ME: $path:$.: Cannot grok '$line'\n";
|
|
my $endpoint = $1;
|
|
|
|
# Some function declarations require an argument of the form '{name:.*}'
|
|
# but the swagger (which gets derived from the comments) should not
|
|
# include them. Normalize all such args to just '{name}'.
|
|
$endpoint =~ s/\{name:\.\*\}/\{name\}/;
|
|
|
|
# e.g. /auth, /containers/*/rename, /distribution, /monitor, /plugins
|
|
return 1 if $line =~ /\.UnsupportedHandler/;
|
|
|
|
#
|
|
# Determine the HTTP METHOD (GET, POST, DELETE, HEAD)
|
|
#
|
|
my $method;
|
|
if ($line =~ /generic.VersionHandler/) {
|
|
$method = 'GET';
|
|
}
|
|
elsif ($line =~ m!\.Methods\((.*)\)!) {
|
|
my $x = $1;
|
|
|
|
if ($x =~ /Method(Post|Get|Delete|Head)/) {
|
|
$method = uc $1;
|
|
}
|
|
elsif ($x =~ /\"(HEAD|GET|POST)"/) {
|
|
$method = $1;
|
|
}
|
|
else {
|
|
die "$ME: $path:$.: Cannot grok $x\n";
|
|
}
|
|
}
|
|
else {
|
|
warn "$ME: $path:$.: No Methods in '$line'\n";
|
|
return 1;
|
|
}
|
|
|
|
#
|
|
# Determine the SWAGGER TAG. Assume 'compat' unless we see libpod; but
|
|
# this can be overruled (see special case below)
|
|
#
|
|
my $tag = ($endpoint =~ /(libpod)/ ? $1 : 'compat');
|
|
|
|
#
|
|
# Determine the OPERATION. Done in a helper function because there
|
|
# are a lot of complicated special cases.
|
|
#
|
|
my $operation = operation_name($method, $endpoint);
|
|
|
|
# Special case: the following endpoints all get a custom tag
|
|
if ($endpoint =~ m!/(pods|manifests)/!) {
|
|
$tag = $1;
|
|
}
|
|
|
|
# Special case: anything related to 'events' gets a system tag
|
|
if ($endpoint =~ m!/events!) {
|
|
$tag = 'system';
|
|
}
|
|
|
|
state $previous_path; # Previous path name, to avoid dups
|
|
|
|
#
|
|
# Compare actual swagger comment to what we expect based on Handle call.
|
|
#
|
|
my $expect = " // swagger:operation $method $endpoint $tag $operation ";
|
|
my @actual = grep { /swagger:operation/ } @comments;
|
|
|
|
return 1 if !@actual; # No swagger comment in file; oh well
|
|
|
|
my $actual = $actual[0];
|
|
|
|
# (Ignore whitespace discrepancies)
|
|
(my $a_trimmed = $actual) =~ s/\s+/ /g;
|
|
|
|
return 1 if $a_trimmed eq $expect;
|
|
|
|
# Mismatch. Display it. Start with filename, if different from previous
|
|
print "\n";
|
|
if (!$previous_path || $previous_path ne $path) {
|
|
print $path, ":\n";
|
|
}
|
|
$previous_path = $path;
|
|
|
|
# Show the actual line, prefixed with '-' ...
|
|
print "- $actual[0]";
|
|
# ...then our generated ones, but use '...' as a way to ignore matches
|
|
print "+ $indent//";
|
|
my @actual_split = split ' ', $actual;
|
|
my @expect_split = split ' ', $expect;
|
|
for my $i (1 .. $#actual_split) {
|
|
print " ";
|
|
if ($actual_split[$i] eq ($expect_split[$i]||'')) {
|
|
print "." x length($actual_split[$i]);
|
|
}
|
|
else {
|
|
# Show the difference. Use terminal highlights if available.
|
|
print "\e[1;37m" if -t *STDOUT;
|
|
print $expect_split[$i];
|
|
print "\e[m" if -t *STDOUT;
|
|
}
|
|
}
|
|
print "\n";
|
|
|
|
# Show the r.Handle* code line itself
|
|
print " ", $line_orig;
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
####################
|
|
# operation_name # Given a method + endpoint, return the swagger operation
|
|
####################
|
|
sub operation_name {
|
|
my ($method, $endpoint) = @_;
|
|
|
|
# /libpod/foo/bar -> (libpod, foo, bar)
|
|
my @endpoints = grep { /\S/ } split '/', $endpoint;
|
|
|
|
# /libpod endpoints -> add 'Libpod' to end, e.g. PodStatsLibpod
|
|
my $Libpod = '';
|
|
my $main = shift(@endpoints);
|
|
if ($main eq 'libpod') {
|
|
$Libpod = ucfirst($main);
|
|
$main = shift(@endpoints);
|
|
}
|
|
$main =~ s/s$//; # e.g. Volumes -> Volume
|
|
|
|
# Next path component is an optional action:
|
|
# GET /containers/json -> ContainerList
|
|
# DELETE /libpod/containers/{name} -> ContainerDelete
|
|
# GET /libpod/containers/{name}/logs -> ContainerLogsLibpod
|
|
my $action = shift(@endpoints) || 'list';
|
|
$action = 'list' if $action eq 'json';
|
|
$action = 'delete' if $method eq 'DELETE';
|
|
|
|
# Anything with {id}, {name}, {name:..} may have a following component
|
|
if ($action =~ m!\{.*\}!) {
|
|
$action = shift(@endpoints) || 'inspect';
|
|
$action = 'inspect' if $action eq 'json';
|
|
}
|
|
|
|
# All sorts of special cases
|
|
if ($action eq 'df') {
|
|
$action = 'dataUsage';
|
|
}
|
|
# Grrrrrr, this one is annoying: some operations get an extra 'All'
|
|
elsif ($action =~ /^(delete|get|stats)$/ && $endpoint !~ /\{/) {
|
|
$action .= "All";
|
|
$main .= 's' if $main eq 'container';
|
|
}
|
|
# No real way to used MixedCase in an endpoint, so we have to hack it here
|
|
elsif ($action eq 'showmounted') {
|
|
$action = 'showMounted';
|
|
}
|
|
# Ping is a special endpoint, and even if /libpod/_ping, no 'Libpod'
|
|
elsif ($main eq '_ping') {
|
|
$main = 'system';
|
|
$action = 'ping';
|
|
$Libpod = '';
|
|
}
|
|
# Top-level compat endpoints
|
|
elsif ($main =~ /^(build|commit)$/) {
|
|
$main = 'image';
|
|
$action = $1;
|
|
}
|
|
# Top-level system endpoints
|
|
elsif ($main =~ /^(auth|event|info|version)$/) {
|
|
$main = 'system';
|
|
$action = $1;
|
|
$action .= 's' if $action eq 'event';
|
|
}
|
|
|
|
return "\u${main}\u${action}$Libpod";
|
|
}
|
|
|
|
|
|
1;
|