db-lab1/README.md

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# bserv
*A Boost Based C++ HTTP JSON Server.*
> NOTE:
> - To build the dependencies & the project, refer to [`BUILD-Windows.md`](BUILD-Windows.md) or [`BUILD-ubuntu.md`](BUILD-ubuntu.md).
> - `bserv` contains the source code for `bserv`.
## Quick Start
> In Windows, you can simply open [`examples/Examples.sln`](examples/Examples.sln). In Ubuntu, [`examples/CMakeLists.txt`](examples/CMakeLists.txt) can be used to compile all the examples.
### Hello, World!
[`examples/hello.cpp`](examples/hello.cpp):
```C++
#include <bserv/common.hpp>
#include <boost/json.hpp>
boost::json::object hello()
{
return {{"msg", "hello, world!"}};
}
int main()
{
bserv::server_config config;
// config.set_port(8080);
bserv::server{config, {
bserv::make_path("/hello", &hello)
}};
}
```
By default, `bserv` listens to `8080`. When you make a request (of any type) to `localhost:8080/hello`, it will respond: `{"msg": "hello, world!"}`.
### Routing
[`examples/routing.cpp`](examples/routing.cpp):
```C++
#include <bserv/common.hpp>
#include <boost/json.hpp>
#include <string>
boost::json::object greet(
const std::string& name)
{
return {{"hello", name}};
}
boost::json::object greet2(
const std::string& name1,
const std::string& name2)
{
return {
{"name1", name1},
{"name2", name2}
};
}
boost::json::object echo(
boost::json::object&& params)
{
return params;
}
int main()
{
bserv::server_config config;
bserv::server{config, {
bserv::make_path(
"/greet/<str>", &greet,
bserv::placeholders::_1),
bserv::make_path(
"/greet/<str>/and/<str>", &greet2,
bserv::placeholders::_1,
bserv::placeholders::_2),
bserv::make_path(
"/echo", &echo,
bserv::placeholders::json_params)
}};
}
```
The following table shows some requests & responses:
|Method|URL|Request Body|Response Body|
|:-:|:-:|:-:|:-:|
|Any|`/greet/world`|(Empty)|`{"hello": "world"}`|
|Any|`/greet/world1/and/world2`|(Empty)|`{"name1": "world1", "name2": "world2"}`|
|GET|`/echo?hello=world`|(Empty)|`{"hello": "world"}`|
|POST|`/echo`|`{"hello": "world"}`|`{"hello": "world"}`|
*All of the URLs should be prefixed with `localhost:8080` when you make the requests.*
### Sample Project: `WebApp`
- `WebApp` is a sample project.
- [`config-Windows.json`](config-Windows.json) and [`config-ubuntu.json`](config-ubuntu.json) are two sample config file for `WebApp`'s startup parameters. **It should be configured and renamed to `config.json` before you start `WebApp`.**
- To use `WebApp`, you should setup the database as well.
#### Database
You can import the sample database:
- Create the database in `psql`:
```
create database bserv;
```
- Create the table in the `shell` using a sample script:
```
psql bserv < db.sql
```