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#pragma once
#include <pistache/description.h>
#include <pistache/endpoint.h>
#include <pistache/http.h>
#include <pistache/serializer/rapidjson.h>
#include "imagealgos.h"
using namespace Pistache;
extern uint8_t pgm_image[64 + img_width * img_height * sizeof(uint16_t)];
extern size_t pgm_image_size;
extern std::mutex pgm_image_mtx;
class HttpService
{
public:
HttpService(Address addr)
: httpEndpoint(std::make_shared<Http::Endpoint>(addr))
, desc("Banking API", "0.1")
{ }
void init(size_t thr = 2)
{
auto opts = Http::Endpoint::options()
.threads(static_cast<int>(thr));
httpEndpoint->init(opts);
createDescription();
}
void start()
{
router.initFromDescription(desc);
Rest::Swagger swagger(desc);
swagger
.uiPath("/doc")
.uiDirectory("/home/user/swagger-ui/dist")
.apiPath("/banker-api.json")
.serializer(&Rest::Serializer::rapidJson)
.install(router);
httpEndpoint->setHandler(router.handler());
httpEndpoint->serve();
}
private:
void createDescription()
{
desc
.info()
.license("Apache", "http://www.apache.org/licenses/LICENSE-2.0");
auto backendErrorResponse = desc.response(Http::Code::Internal_Server_Error, "An error occured with the backend");
desc
.schemes(Rest::Scheme::Http)
.basePath("/v1")
.produces(MIME(Application, Json))
.consumes(MIME(Application, Json));
// desc
// .route(desc.get("/ready"))
// .bind(&Generic::handleReady)
// .response(Http::Code::Ok, "Response to the /ready call")
// .hide();
auto versionPath = desc.path("/v1");
auto sensorPath = versionPath.path("/sensor");
sensorPath
.route(desc.get("/image"))
.bind(&HttpService::image, this)
.produces(MIME(Image, Png))
.response(Http::Code::Ok, "Image from sensor");
// tmp
sensorPath
.route(desc.get("/image2"))
.bind(&HttpService::image, this)
.produces(MIME(Image, Png))
.response(Http::Code::Ok, "Image from sensor");
sensorPath
.route(desc.get("/params"), "Retrive sensor parameters")
.bind(&HttpService::get_sensorParams, this)
.produces(MIME(Application, Plain))
.response(Http::Code::Ok, "Parameter value")
.response(backendErrorResponse);;
sensorPath
.route(desc.get("/:param"), "Retrive sensor parameter")
.bind(&HttpService::get_sensorParam, this)
.produces(MIME(Application, Json))
.parameter<Rest::Type::String>("param", "The name of the parameter to retrieve")
.response(Http::Code::Ok, "Parameter value")
.response(backendErrorResponse);;
sensorPath
.route(desc.post("/:param"), "Set sensor parameter")
.bind(&HttpService::set_sensorParam, this)
.produces(MIME(Application, Plain))
.consumes(MIME(Application, Plain))
.response(Http::Code::Ok, "Setting parameter result");
auto accountsPath = versionPath.path("/accounts");
accountsPath
.route(desc.get("/all"))
.bind(&HttpService::retrieveAllAccounts, this)
.produces(MIME(Application, Json), MIME(Application, Xml))
.response(Http::Code::Ok, "The list of all account");
accountsPath
.route(desc.get("/:name"), "Retrieve an account")
.bind(&HttpService::retrieveAccount, this)
.produces(MIME(Application, Json))
.parameter<Rest::Type::String>("name", "The name of the account to retrieve")
.response(Http::Code::Ok, "The requested account")
.response(backendErrorResponse);
accountsPath
.route(desc.post("/:name"), "Create an account")
.bind(&HttpService::createAccount, this)
.produces(MIME(Application, Json))
.consumes(MIME(Application, Json))
.parameter<Rest::Type::String>("name", "The name of the account to create")
.response(Http::Code::Ok, "The initial state of the account")
.response(backendErrorResponse);
auto accountPath = accountsPath.path("/:name");
accountPath.parameter<Rest::Type::String>("name", "The name of the account to operate on");
accountPath
.route(desc.post("/budget"), "Add budget to the account")
.bind(&HttpService::creditAccount, this)
.produces(MIME(Application, Json))
.response(Http::Code::Ok, "Budget has been added to the account")
.response(backendErrorResponse);
}
void retrieveAllAccounts(const Rest::Request&, Http::ResponseWriter response)
{
response.send(Http::Code::Ok,
"No Account",
{ Http::Mime::Type::Text, Http::Mime::Subtype::Plain} );
}
void retrieveAccount(const Rest::Request&, Http::ResponseWriter response)
{
response.send(Http::Code::Ok, "The bank is closed, come back later");
}
void createAccount(const Rest::Request&, Http::ResponseWriter response)
{
response.send(Http::Code::Ok, "The bank is closed, come back later");
}
void creditAccount(const Rest::Request&, Http::ResponseWriter response)
{
response.send(Http::Code::Ok, "The bank is closed, come back later");
}
void image(const Rest::Request&, Http::ResponseWriter response)
{
// FIXME: image should be valid
std::lock_guard<std::mutex> lg(pgm_image_mtx);
// char data[pgm_image_size];
// memcpy(data, pgm_image, pgm_image_size);
std::cout << "send bytes: " << pgm_image_size << std::endl;
auto res = response.send(Http::Code::Ok,
(const char*)pgm_image, pgm_image_size,
Http::Mime::MediaType { "image/pgm" });
// { Http::Mime::Type::Image, Http::Mime::Subtype::Png });
res.then([](ssize_t bytes)
{ std::cout << bytes << " bytes have been sent\n"; },
Async::NoExcept);
}
void get_sensorParam(const Rest::Request&, Http::ResponseWriter response)
{
response.send(Http::Code::Ok, std::to_string(123));
}
void get_sensorParams(const Rest::Request&, Http::ResponseWriter response)
{
response.send(Http::Code::Ok, std::to_string(123));
}
void set_sensorParam(const Rest::Request&, Http::ResponseWriter response)
{
response.send(Http::Code::Ok, std::to_string(123));
}
std::shared_ptr<Http::Endpoint> httpEndpoint;
Rest::Description desc;
Rest::Router router;
};
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