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picpac-explorer.cpp
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picpac-explorer.cpp
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#define BOOST_SPIRIT_NO_PREDEFINED_TERMINALS
#include <chrono>
#include <mutex>
#include <vector>
#include <unordered_map>
#include <boost/format.hpp>
#include <boost/program_options.hpp>
#include <magic.h>
#include <json11.hpp>
#include <server_http.hpp>
#include <server_extra.hpp>
#include <server_extra_zip.hpp>
#include "picpac-cv.h"
#include "picpac-overview.h"
#include "bfdfs/bfdfs.h"
using namespace std;
using namespace picpac;
char const *version = PP_VERSION "-" PP_BUILD_NUMBER "," PP_BUILD_ID "," PP_BUILD_TIME;
extern char _binary_html_static_start;
static vector<pair<string, string>> const EXT_MIME{
{".html", "text/html"},
{".css", "text/css"},
{".js", "application/javascript"},
};
static unsigned constexpr EXT_MIME_GZIP = 3;
static std::string const DEFAULT_MIME("application/octet-stream");
void banner () {
cout <<
" ____ _ ____ " << endl <<
" | _ \\(_) ___| _ \\ __ _ ___ " << endl <<
" | |_) | |/ __| |_) / _` |/ __|" << endl <<
" | __/| | (__| __/ (_| | (__ " << endl <<
" |_| |_|\\___|_| \\__,_|\\___|" << endl <<
" " << endl;
cout << "PicPac Explorer" << endl;
cout << "Version: " << version << endl;
cout << "https://github.com/aaalgo/picpac" << endl;
}
using namespace json11;
static size_t max_peak_mb = 1000;
static float max_peak_relax = 0.2;
typedef SimpleWeb::Server<SimpleWeb::HTTP> HttpServer;
using SimpleWeb::Response;
using SimpleWeb::Request;
void backtrace ();
class Service: public SimpleWeb::Multiplexer {
picpac::IndexedFileReader db;
bfdfs::Loader statics;
default_random_engine rng; // needs protection!!!TODO
string overview;
string collage;
vector<vector<string>> samples;
magic_t cookie;
#define HTTP_Q "(\\?.+)?$"
string http_query (string const &path) const {
auto p = path.find('?');
if (p == path.npos) return "";
return path.substr(p+1);
}
static string const &path2mime (string const &path, bool *gzip) {
do {
auto p = path.rfind('.');
if (p == path.npos) break;
string ext = path.substr(p);
*gzip = false;
unsigned i = 0;
for (auto const &v: EXT_MIME) {
if (v.first == ext) {
if (i < EXT_MIME_GZIP) {
*gzip = true;
}
return v.second;
}
++i;
}
} while (false);
return DEFAULT_MIME;
}
public:
Service (fs::path const &db_path, HttpServer *sv)
: Multiplexer(sv),
db(db_path),
statics(&_binary_html_static_start) {
cookie = magic_open(MAGIC_MIME_TYPE);
CHECK(cookie);
magic_load(cookie, "/usr/share/misc/magic:/usr/local/share/misc/magic");
Overview ov(db, max_peak_mb, max_peak_relax);
ov.toJson(&overview);
{
ImageEncoder encoder(".jpg");
encoder.encode(ov.collage(), &collage);
{
vector<vector<cv::Mat>> ss;
ov.stealSamples(&ss);
samples.resize(ss.size());
for (unsigned i = 0; i < ss.size(); ++i) {
auto &from = ss[i];
auto &to = samples[i];
to.resize(from.size());
for (unsigned j = 0; j < from.size(); ++j) {
encoder.encode(from[j], &to[j]);
}
}
}
}
add("^/api/overview" HTTP_Q, "GET", [this](Response &res, Request &req) {
/*
rfc3986::Form trans;
// transfer all applicable image parameters to trans
// so we can later use that for image display
#define PICPAC_CONFIG_UPDATE(C,P) \
{ auto it = query.find(#P); if (it != query.end()) trans.insert(*it);}
PICPAC_CONFIG_UPDATE_ALL(0);
#undef PICPAC_CONFIG_UPDATE
string ext = trans.encode(true);
*/
res.content = overview;
res.mime = "application/json";
});
add("^/api/collage.jpg" HTTP_Q, "GET", [this](Response &res, Request &req) {
/*
rfc3986::Form trans;
// transfer all applicable image parameters to trans
// so we can later use that for image display
#define PICPAC_CONFIG_UPDATE(C,P) \
{ auto it = query.find(#P); if (it != query.end()) trans.insert(*it);}
PICPAC_CONFIG_UPDATE_ALL(0);
#undef PICPAC_CONFIG_UPDATE
string ext = trans.encode(true);
*/
res.content = collage;
res.mime = "image/jpeg";
});
add("^/api/thumb" HTTP_Q, "GET", [this](Response &res, Request &req) {
int cls = req.GET.get<int>("class", 0);
int off = req.GET.get<int>("offset", 0);
if (cls >= samples.size()
|| off >= samples[cls].size()) {
res.status = 404;
res.status_string = "Not Found";
}
else {
res.mime = "image/jpeg";
res.content = samples[cls][off];
}
});
add("^/api/sample" HTTP_Q, "GET", [this](Response &res, Request &req) {
int count = req.GET.get<int>("count", 20);
//string anno = query.get<string>("anno", "");
vector<int> ids(count);
for (auto &id: ids) {
id = rand() % db.size();
}
Json json = Json::object {
{"samples", Json(ids)},
};
res.mime = "application/json";
res.content = json.dump();
});
add("^/api/file" HTTP_Q, "GET",
[this](Response &res, Request &req) {
int id = req.GET.get<int>("id", 0);
Record rec;
db.read(id, &rec);
string buf = rec.field_string(0);
res.mime = magic_buffer(cookie, &buf[0], buf.size());
res.content.swap(buf);
});
add("^/api/image" HTTP_Q, "GET",
[this](Response &res, Request &req) {
PICPAC_CONFIG conf;
conf.anno_color3 = 255;
conf.anno_copy = true;
conf.anno_thickness = 2;
conf.pert_color1 = 20;
conf.pert_color2 = 20;
conf.pert_color3 = 20;
conf.pert_angle = 20;
conf.pert_min_scale = 0.8;
conf.pert_max_scale = 1.2;
#define PICPAC_CONFIG_UPDATE(C,P) C.P = req.GET.get<decltype(C.P)>(#P, C.P)
PICPAC_CONFIG_UPDATE_ALL(conf);
#undef PICPAC_CONFIG_UPDATE
float anno_factor = req.GET.get<float>("anno_factor", 0);
LOG(INFO) << "ANNO: " << anno_factor;
bool do_norm = req.GET.get<int>("norm", 0);
ImageLoader loader(conf);
ImageLoader::PerturbVector pv;
int id = req.GET.get<int>("id", rng() % db.size());
ImageLoader::Value v;
loader.sample(rng, &pv);
loader.load([this, id](Record *r){db.read(id, r);}, pv, &v);
ImageEncoder encoder;
string buf;
cv::Mat image = v.image;
if (conf.annotate.size()) {
image = v.annotation;
if (anno_factor) {
image *= anno_factor;
}
}
if (do_norm) {
cv::Mat tmp;
cv::normalize(image, tmp, 0, 255, cv::NORM_MINMAX, CV_8U);
image = tmp;
}
encoder.encode(image, &buf);
res.mime = "image/jpeg";
res.content.swap(buf);
});
add_default("GET",
[this](Response &res, Request &req) {
string path = req.path;
auto it = statics.find(req.path);
if (it == statics.end()) {
path = "/index.html";
it = statics.find(path);
}
if (it != statics.end()) {
auto page = it->second;
auto it = req.header.find("If-None-Match");
do {
if (it != req.header.end()) {
string const &tag = it->second;
if (tag == page.checksum || (true
&& (tag.size() == (page.checksum.size() + 2))
&& (tag.find(page.checksum) == 1)
&& (tag.front() == '"')
&& (tag.back() == '"'))) {
res.status = 304;
res.status_string = "Not Modified";
res.content.clear();
break;
}
}
res.content = string(page.begin, page.end);
bool gz = false;
res.mime = path2mime(path, &gz);
res.header.insert(make_pair(string("ETag"), '"' + page.checksum +'"'));
if (gz) {
SimpleWeb::plugins::deflate(res, req);
}
} while (false);
}
else {
res.status = 404;
res.content.clear();
}
});
}
~Service () {
magic_close(cookie);
}
};
int main(int argc, char const* argv[]) {
banner();
//string address;
unsigned short port;
int threads;
fs::path db_path;
namespace po = boost::program_options;
po::options_description desc("Allowed options");
desc.add_options()
("help,h", "produce help message.")
//("address", po::value(&address)->default_value("0.0.0.0"), "")
("port", po::value(&port)->default_value(18888), "")
("db", po::value(&db_path), "")
("threads,t", po::value(&threads)->default_value(1), "")
("no-browser", "do not start browser")
("max-peek", po::value(&max_peak_mb)->default_value(1000), "read this number MB of data")
;
po::options_description desc_hidden("Expert options");
desc_hidden.add_options()
//("html_root", po::value(&html_root), "")
;
desc.add(desc_hidden);
po::positional_options_description p;
p.add("db", 1);
po::variables_map vm;
po::store(po::command_line_parser(argc, argv).
options(desc).positional(p).run(), vm);
po::notify(vm);
if (vm.count("help") || db_path.empty()) {
cout << "Usage:" << endl;
cout << "\tserver ... <db>" << endl;
cout << desc;
cout << endl;
return 0;
}
HttpServer server(port, threads);
Service service(db_path, &server);
thread th([&]() {
LOG(INFO) << "listening at port: " << port;
LOG(INFO) << "running server with " << threads << " threads.";
server.start();
});
do { // test and start web browser
if (vm.count("no-browser")) break;
char *display = getenv("DISPLAY");
if ((!display) || (strlen(display) == 0)) {
LOG(WARNING) << "No DISPLAY found, not starting browser.";
break;
}
boost::format cmd("xdg-open http://localhost:%1%");
system((cmd % port).str().c_str());
} while (false);
// GET /hello
th.join();
return 0;
}