client.cpp

#include "client.hpp"
#include "acl.hpp"
#include "connection.hpp"
#include "multi.hpp"

#include <sstream>
#include <ostream>

namespace zk
{

// client                                                                                                             //

client::client(string_view conn_string) :
        client(connection::connect(conn_string))
{ }

client::client(std::shared_ptr<connection> conn) noexcept :
        _conn(std::move(conn))
{ }

future<client> client::connect(string_view conn_string)
{
    try
    {
        auto conn = connection::connect(conn_string);
        auto state_change_fut = conn->watch_state();
        if (conn->state() == state::connected)
        {
            promise<client> p;
            p.set_value(client(std::move(conn)));
            return p.get_future();
        }
        else
        {
            // TODO: Test if future::then can be relied on and use that instead of std::async
            return std::async
                   (
                       std::launch::async,
                       [state_change_fut = std::move(state_change_fut), conn = std::move(conn)] () mutable -> client
                       {
                         state s(state_change_fut.get());
                         if (s == state::connected)
                            return client(conn);
                         else
                             throw std::runtime_error(std::string("Unexpected state: ") + to_string(s));
                       }
                   );
        }
    }
    catch (...)
    {
        promise<client> p;
        p.set_exception(std::current_exception());
        return p.get_future();
    }
}

client::~client() noexcept = default;

void client::close()
{
    _conn->close();
}

future<get_result> client::get(string_view path) const
{
    return _conn->get(path);
}

future<watch_result> client::watch(string_view path) const
{
    return _conn->watch(path);
}

future<get_children_result> client::get_children(string_view path) const
{
    return _conn->get_children(path);
}

future<watch_children_result> client::watch_children(string_view path) const
{
    return _conn->watch_children(path);
}

future<exists_result> client::exists(string_view path) const
{
    return _conn->exists(path);
}

future<watch_exists_result> client::watch_exists(string_view path) const
{
    return _conn->watch_exists(path);
}

future<create_result> client::create(string_view   path,
                                     const buffer& data,
                                     const acl&    rules,
                                     create_mode   mode
                                    )
{
    return _conn->create(path, data, rules, mode);
}

future<create_result> client::create(string_view   path,
                                     const buffer& data,
                                     create_mode   mode
                                    )
{
    return create(path, data, acls::open_unsafe(), mode);
}

future<set_result> client::set(string_view path, const buffer& data, version check)
{
    return _conn->set(path, data, check);
}

future<get_acl_result> client::get_acl(string_view path) const
{
    return _conn->get_acl(path);
}

future<void> client::set_acl(string_view path, const acl& rules, acl_version check)
{
    return _conn->set_acl(path, rules, check);
}

future<void> client::erase(string_view path, version check)
{
    return _conn->erase(path, check);
}

future<void> client::load_fence() const
{
    return _conn->load_fence();
}

future<multi_result> client::commit(multi_op txn)
{
    return _conn->commit(std::move(txn));
}

}