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package Frey::CouchAPI; |
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|
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use JSON; |
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use Data::Dump qw/dump/; |
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use URI::Escape; |
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use File::Path qw(make_path remove_tree); |
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use Storable; |
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|
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sub rewrite_urls { |
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my ( $self, $tx ) = @_; |
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if ( $tx->req->url->path =~ m{/_utils/} ) { |
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my $path = $tx->req->url->path; |
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$path =~ s{(/_utils)/?$}{$1/index.html}; # poor man's DirectoryIndex |
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$path =~ s{/_utils}{/static/futon}; |
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$tx->req->url->path( $path ); |
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my $url = $tx->req->url->to_string; |
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my $old = $url; |
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$url = $tx->req->url->to_string; |
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warn "# rewrite $old -> $url\n"; |
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} |
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} |
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|
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my $path = '/data/webpac2/var/row'; |
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my @all_dbs = map { |
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s{^\Q$path\E/*}{}; |
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$_; |
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} glob "$path/*/*"; |
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|
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my $regex_dbs = '[a-z][a-z0-9_\$\(\)\+\-/]+'; |
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|
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our $json = {}; |
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our $stauts = 500; |
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|
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sub ok { |
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$json = { ok => JSON::true }; |
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$status = 200; |
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} |
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|
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sub dispatch { |
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my ($self,$tx) = @_; |
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|
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my $url = $tx->req->url->to_string; |
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$url = uri_unescape( $url ); |
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my $method = $tx->req->method; |
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|
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warn "INFO: using Apache CouchDB emulation API\n"; |
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|
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if ( $url eq '/' ) { |
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$json = { |
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couchdb => "Welcome", |
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version => "0-Frey", |
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} |
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} elsif ( $url eq '/_all_dbs' ) { |
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$json = [ @all_dbs ]; |
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$status = 200; |
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} elsif ( $url =~ m{($regex_dbs)/$} ) { |
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|
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my $database = $1; |
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my $dir = "$path/$database"; |
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|
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if ( $method eq 'GET' ) { |
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$json = database_get( $database ); |
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} elsif ( $method eq 'DELETE' ) { |
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if ( ! -e $dir ) { |
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$status = 404; |
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} else { |
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remove_tree($dir) && ok || { $status = 501 }; |
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} |
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} elsif ( $method eq 'PUT' ) { |
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if ( ! -e $dir ) { |
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make_path($dir) && ok && warn "created $dir" || { $status = 501 }; |
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} else { |
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$status = 412; |
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} |
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} |
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|
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} elsif ( $url =~ m{($regex_dbs)/(.+)$} ) { |
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my ($database,$id) = ($1,$2); |
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|
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my $p = "$path/$database/$id"; |
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warn "## database: $database id: $id -> $p "; |
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|
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if ( $id eq '_all_docs' ) { |
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|
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my @docs = map { |
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s{^$path/$database/}{}; |
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$_; |
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} glob( "$path/$database/*" ); |
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|
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warn "## docs ", dump( @docs ); |
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|
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$json = { |
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total_rows => $#docs + 1, |
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offset => 0, |
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rows => [], |
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}; |
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|
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foreach my $id ( @docs ) { |
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warn "++ $id\n"; |
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my $p = "$path/$database/$id"; |
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my $data = Storable::retrieve( $p ); |
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push @{ $json->{rows} }, { |
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id => $id, |
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key => $id, |
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value => { |
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rev => (stat($p))[9], # mtime |
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} |
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}; |
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} |
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|
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} elsif ( $method eq 'PUT' ) { |
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|
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warn "## ",dump( $tx->req ); |
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|
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my $data = $tx->req->content->file->slurp; |
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|
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Storable::store( from_json($data), $p ); |
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warn "store $p ", -s $p, " bytes: $data\n"; |
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} elsif ( $method eq 'GET' ) { |
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warn "retrive $p ", -s $p, " bytes\n"; |
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$json = Storable::retrieve( $p ); |
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} else { |
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$status = 501; |
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} |
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|
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} |
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|
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if ( $status >= 400 && $status < 500 && ! defined $json) { |
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$json = { error => 'not_found', reason => 'Missing' }; |
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warn "fake $status"; |
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} |
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|
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$tx->res->code( $status ); |
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$tx->res->headers->content_type( 'text/json' ); |
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my $body = to_json $json; |
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$tx->res->body( $body ); |
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warn "CouchDB API: $method $url $status $body\n"; |
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return $tx; |
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|
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} |
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|
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sub database_get { |
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my ($db_name) = @_; |
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warn "# collecting docs from $path/$db_name/*\n"; |
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my @docs = glob "$path/$db_name/*"; |
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my $json = { |
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db_name => $db_name, |
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doc_count => $#docs + 1, |
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doc_del_count => 0, |
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update_seq => 0, |
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purge_seq => 0, |
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capacity_running => JSON::false, |
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disk_size => 0, |
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instance_start_time => time(), |
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}; |
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|
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warn "## calculating disk_size\n"; |
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$json->{disk_size} += -s "$path/$1/$_" foreach $docs; |
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$status = 200; |
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return $json; |
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} |
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|
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1; |
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