1059 lines
39 KiB
C++
1059 lines
39 KiB
C++
#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#if defined(_WIN32)
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#else
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#include <netdb.h>
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#include <sys/socket.h>
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#endif
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#include <chrono>
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#include <iostream>
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#include <fstream>
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#include <limits>
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#include <memory>
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#include <mutex>
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#include <sstream>
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#include <thread>
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#include <boost/algorithm/string.hpp>
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#include <grpc++/grpc++.h>
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#include <grpc++/security/credentials.h>
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#include "proto/rpc.grpc.pb.h"
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#include "proto/v3lock.grpc.pb.h"
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#include "proto/v3election.grpc.pb.h"
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#include "etcd/Client.hpp"
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#include "etcd/KeepAlive.hpp"
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#include "etcd/v3/action_constants.hpp"
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#include "etcd/v3/Action.hpp"
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#include "etcd/v3/AsyncRangeResponse.hpp"
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#include "etcd/v3/AsyncWatchResponse.hpp"
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#include "etcd/v3/AsyncDeleteResponse.hpp"
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#include "etcd/v3/AsyncPutResponse.hpp"
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#include "etcd/v3/AsyncLockResponse.hpp"
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#include "etcd/v3/AsyncElectionResponse.hpp"
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#include "etcd/v3/AsyncTxnResponse.hpp"
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#include "etcd/v3/Transaction.hpp"
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#include "etcd/v3/AsyncSetAction.hpp"
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#include "etcd/v3/AsyncCompareAndSwapAction.hpp"
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#include "etcd/v3/AsyncCompareAndDeleteAction.hpp"
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#include "etcd/v3/AsyncUpdateAction.hpp"
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#include "etcd/v3/AsyncHeadAction.hpp"
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#include "etcd/v3/AsyncRangeAction.hpp"
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#include "etcd/v3/AsyncDeleteAction.hpp"
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#include "etcd/v3/AsyncPutAction.hpp"
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#include "etcd/v3/AsyncWatchAction.hpp"
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#include "etcd/v3/AsyncLeaseAction.hpp"
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#include "etcd/v3/AsyncLockAction.hpp"
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#include "etcd/v3/AsyncElectionAction.hpp"
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#include "etcd/v3/AsyncTxnAction.hpp"
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using grpc::Channel;
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namespace etcd {
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namespace detail {
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static bool dns_resolve(std::string const &target, std::vector<std::string> &endpoints) {
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struct addrinfo hints = {}, *addrs;
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hints.ai_family = AF_INET;
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hints.ai_socktype = SOCK_STREAM;
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hints.ai_protocol = IPPROTO_TCP;
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std::vector<std::string> target_parts;
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boost::split(target_parts, target, boost::is_any_of(":"));
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if (target_parts.size() != 2) {
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std::cerr << "warn: invalid URL: " << target << std::endl;
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return false;
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}
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#if defined(_WIN32)
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{
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// Use the MAKEWORD(lowbyte, highbyte) macro declared in Windef.h.
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WORD wVersionRequested = MAKEWORD(2, 2);
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WSADATA wsaData;
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int err = WSAStartup(wVersionRequested, &wsaData);
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if (err != 0) {
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// Tell the user that we could not find a usable Winsock DLL.
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std::cerr << "WSAStartup failed with error: %d" << err << std::endl;
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return false;
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}
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}
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#endif
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int r = getaddrinfo(target_parts[0].c_str(), target_parts[1].c_str(), &hints, &addrs);
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if (r != 0) {
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std::cerr << "warn: getaddrinfo() failed for endpoint " << target
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<< " with error: " << r << std::endl;
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return false;
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}
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char host[16] = {'\0'};
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for (struct addrinfo* addr = addrs; addr != nullptr; addr = addr->ai_next) {
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memset(host, '\0', sizeof(host));
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getnameinfo(addr->ai_addr, addr->ai_addrlen, host, sizeof(host), NULL, 0, NI_NUMERICHOST);
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endpoints.emplace_back(std::string(host) + ":" + target_parts[1]);
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}
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freeaddrinfo(addrs);
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return true;
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}
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const std::string strip_and_resolve_addresses(std::string const &address) {
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std::vector<std::string> addresses;
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boost::algorithm::split(addresses, address, boost::algorithm::is_any_of(",;"));
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std::string stripped_address;
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{
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std::vector<std::string> stripped_addresses;
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std::string substr("://");
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for (auto const &addr: addresses) {
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std::string::size_type idx = addr.find(substr);
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std::string target = idx == std::string::npos ? addr : addr.substr(idx + substr.length());
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etcd::detail::dns_resolve(target, stripped_addresses);
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}
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stripped_address = boost::algorithm::join(stripped_addresses, ",");
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}
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return "ipv4:///" + stripped_address;
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}
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const bool authenticate(std::shared_ptr<grpc::Channel> const &channel,
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std::string const &username,
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std::string const &password,
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std::string &token_or_message) {
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// run a round of auth
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auto auth_stub = etcdserverpb::Auth::NewStub(channel);
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ClientContext context;
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etcdserverpb::AuthenticateRequest auth_request;
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etcdserverpb::AuthenticateResponse auth_response;
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auth_request.set_name(username);
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auth_request.set_password(password);
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auto status = auth_stub->Authenticate(&context, auth_request, &auth_response);
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if (status.ok()) {
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token_or_message = auth_response.token();
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return true;
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} else {
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token_or_message = status.error_message();
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return false;
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}
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}
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static std::string read_from_file(std::string const &filename) {
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std::ifstream file(filename.c_str(), std::ios::in);
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if (file.is_open()) {
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std::stringstream ss;
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ss << file.rdbuf ();
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file.close ();
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return ss.str ();
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}
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return std::string{};
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}
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static grpc::SslCredentialsOptions make_ssl_credentials(std::string const &ca,
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std::string const &cert,
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std::string const &key) {
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grpc::SslCredentialsOptions options;
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options.pem_root_certs = read_from_file(ca);
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options.pem_cert_chain = read_from_file(cert);
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options.pem_private_key = read_from_file(key);
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return options;
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}
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}
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}
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class etcd::Client::TokenAuthenticator {
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private:
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std::shared_ptr<grpc::Channel> channel_;
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std::string username_, password_, token_;
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int ttl_ = 300; // see also --auth-token-ttl for etcd
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std::chrono::time_point<std::chrono::system_clock> updated_at;
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std::mutex mtx_;
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bool has_token_ = false;
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public:
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TokenAuthenticator(): has_token_(false) {
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}
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TokenAuthenticator(std::shared_ptr<grpc::Channel> channel,
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std::string const &username,
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std::string const &password,
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const int ttl=300)
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: channel_(channel), username_(username), password_(password), ttl_(ttl), has_token_(false) {
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if ((!username.empty()) && (!(password.empty()))) {
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has_token_ = true;
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renew_if_expired(true);
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}
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}
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std::string const &renew_if_expired(const bool force = false) {
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if (!has_token_) {
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return token_;
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}
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std::lock_guard<std::mutex> scoped_lock(mtx_);
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if (force || (!token_.empty())) {
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auto tp = std::chrono::system_clock::now();
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if (force || std::chrono::duration_cast<std::chrono::seconds>(tp - updated_at).count()
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> std::max(1, ttl_ - 3)) {
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updated_at = tp;
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// auth
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if (!etcd::detail::authenticate(this->channel_, username_, password_, token_)) {
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throw std::invalid_argument("Etcd authentication failed: " + token_);
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}
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}
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}
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return token_;
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}
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};
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void etcd::Client::TokenAuthenticatorDeleter::operator()(etcd::Client::TokenAuthenticator *authenticator) {
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if (authenticator) {
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delete authenticator;
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}
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}
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struct etcd::Client::EtcdServerStubs {
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std::unique_ptr<etcdserverpb::KV::Stub> kvServiceStub;
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std::unique_ptr<etcdserverpb::Watch::Stub> watchServiceStub;
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std::unique_ptr<etcdserverpb::Lease::Stub> leaseServiceStub;
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std::unique_ptr<v3lockpb::Lock::Stub> lockServiceStub;
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std::unique_ptr<v3electionpb::Election::Stub> electionServiceStub;
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};
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void etcd::Client::EtcdServerStubsDeleter::operator()(etcd::Client::EtcdServerStubs *stubs) {
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if (stubs) {
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delete stubs;
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}
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}
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etcd::Client::Client(std::string const & address,
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std::string const & load_balancer)
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{
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// create channels
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std::string const addresses = etcd::detail::strip_and_resolve_addresses(address);
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grpc::ChannelArguments grpc_args;
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grpc_args.SetMaxSendMessageSize(std::numeric_limits<int>::max());
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grpc_args.SetMaxReceiveMessageSize(std::numeric_limits<int>::max());
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std::shared_ptr<grpc::ChannelCredentials> creds = grpc::InsecureChannelCredentials();
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grpc_args.SetLoadBalancingPolicyName(load_balancer);
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this->channel = grpc::CreateCustomChannel(addresses, creds, grpc_args);
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this->token_authenticator.reset(new TokenAuthenticator());
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// create stubs
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stubs.reset(new EtcdServerStubs{});
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stubs->kvServiceStub = KV::NewStub(this->channel);
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stubs->watchServiceStub= Watch::NewStub(this->channel);
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stubs->leaseServiceStub= Lease::NewStub(this->channel);
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stubs->lockServiceStub = Lock::NewStub(this->channel);
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stubs->electionServiceStub = Election::NewStub(this->channel);
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}
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etcd::Client::Client(std::string const & address,
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grpc::ChannelArguments const & arguments)
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{
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// create channels
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std::string const addresses = etcd::detail::strip_and_resolve_addresses(address);
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grpc::ChannelArguments grpc_args = arguments;
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grpc_args.SetMaxSendMessageSize(std::numeric_limits<int>::max());
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grpc_args.SetMaxReceiveMessageSize(std::numeric_limits<int>::max());
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std::shared_ptr<grpc::ChannelCredentials> creds = grpc::InsecureChannelCredentials();
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this->channel = grpc::CreateCustomChannel(addresses, creds, grpc_args);
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this->token_authenticator.reset(new TokenAuthenticator());
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// create stubs
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stubs.reset(new EtcdServerStubs{});
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stubs->kvServiceStub = KV::NewStub(this->channel);
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stubs->watchServiceStub= Watch::NewStub(this->channel);
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stubs->leaseServiceStub= Lease::NewStub(this->channel);
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stubs->lockServiceStub = Lock::NewStub(this->channel);
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stubs->electionServiceStub = Election::NewStub(this->channel);
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}
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etcd::Client *etcd::Client::WithUrl(std::string const & etcd_url,
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std::string const & load_balancer) {
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return new etcd::Client(etcd_url, load_balancer);
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}
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etcd::Client *etcd::Client::WithUrl(std::string const & etcd_url,
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grpc::ChannelArguments const & arguments) {
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return new etcd::Client(etcd_url, arguments);
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}
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etcd::Client::Client(std::string const & address,
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std::string const & username,
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std::string const & password,
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int const auth_token_ttl,
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std::string const & load_balancer)
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{
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// create channels
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std::string const addresses = etcd::detail::strip_and_resolve_addresses(address);
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grpc::ChannelArguments grpc_args;
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grpc_args.SetMaxSendMessageSize(std::numeric_limits<int>::max());
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grpc_args.SetMaxReceiveMessageSize(std::numeric_limits<int>::max());
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std::shared_ptr<grpc::ChannelCredentials> creds = grpc::InsecureChannelCredentials();
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grpc_args.SetLoadBalancingPolicyName(load_balancer);
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this->channel = grpc::CreateCustomChannel(addresses, creds, grpc_args);
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// auth
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this->token_authenticator.reset(new TokenAuthenticator(this->channel, username, password, auth_token_ttl));
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// setup stubs
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stubs.reset(new EtcdServerStubs{});
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stubs->kvServiceStub = KV::NewStub(this->channel);
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stubs->watchServiceStub= Watch::NewStub(this->channel);
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stubs->leaseServiceStub= Lease::NewStub(this->channel);
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stubs->lockServiceStub = Lock::NewStub(this->channel);
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stubs->electionServiceStub = Election::NewStub(this->channel);
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}
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etcd::Client::Client(std::string const & address,
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std::string const & username,
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std::string const & password,
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int const auth_token_ttl,
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grpc::ChannelArguments const & arguments)
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{
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// create channels
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std::string const addresses = etcd::detail::strip_and_resolve_addresses(address);
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grpc::ChannelArguments grpc_args = arguments;
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grpc_args.SetMaxSendMessageSize(std::numeric_limits<int>::max());
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grpc_args.SetMaxReceiveMessageSize(std::numeric_limits<int>::max());
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std::shared_ptr<grpc::ChannelCredentials> creds = grpc::InsecureChannelCredentials();
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this->channel = grpc::CreateCustomChannel(addresses, creds, grpc_args);
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// auth
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this->token_authenticator.reset(new TokenAuthenticator(this->channel, username, password, auth_token_ttl));
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// setup stubs
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stubs.reset(new EtcdServerStubs{});
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stubs->kvServiceStub = KV::NewStub(this->channel);
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stubs->watchServiceStub= Watch::NewStub(this->channel);
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stubs->leaseServiceStub= Lease::NewStub(this->channel);
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stubs->lockServiceStub = Lock::NewStub(this->channel);
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stubs->electionServiceStub = Election::NewStub(this->channel);
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}
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etcd::Client *etcd::Client::WithUser(std::string const & etcd_url,
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std::string const & username,
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std::string const & password,
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int const auth_token_ttl,
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std::string const & load_balancer) {
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return new etcd::Client(etcd_url, username, password, auth_token_ttl, load_balancer);
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}
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etcd::Client *etcd::Client::WithUser(std::string const & etcd_url,
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std::string const & username,
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std::string const & password,
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int const auth_token_ttl,
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grpc::ChannelArguments const & arguments) {
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return new etcd::Client(etcd_url, username, password, auth_token_ttl, arguments);
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}
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etcd::Client::Client(std::string const & address,
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std::string const & ca,
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std::string const & cert,
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std::string const & key,
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std::string const & target_name_override,
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std::string const & load_balancer)
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{
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// create channels
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std::string const addresses = etcd::detail::strip_and_resolve_addresses(address);
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grpc::ChannelArguments grpc_args;
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grpc_args.SetMaxSendMessageSize(std::numeric_limits<int>::max());
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grpc_args.SetMaxReceiveMessageSize(std::numeric_limits<int>::max());
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std::shared_ptr<grpc::ChannelCredentials> creds = grpc::SslCredentials(
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etcd::detail::make_ssl_credentials(ca, cert, key));
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grpc_args.SetLoadBalancingPolicyName(load_balancer);
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if (!target_name_override.empty()) {
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grpc_args.SetString(GRPC_SSL_TARGET_NAME_OVERRIDE_ARG, target_name_override);
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}
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this->channel = grpc::CreateCustomChannel(addresses, creds, grpc_args);
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this->token_authenticator.reset(new TokenAuthenticator());
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// setup stubs
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stubs.reset(new EtcdServerStubs{});
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stubs->kvServiceStub = KV::NewStub(this->channel);
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stubs->watchServiceStub= Watch::NewStub(this->channel);
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stubs->leaseServiceStub= Lease::NewStub(this->channel);
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stubs->lockServiceStub = Lock::NewStub(this->channel);
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stubs->electionServiceStub = Election::NewStub(this->channel);
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}
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etcd::Client::Client(std::string const & address,
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std::string const & ca,
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std::string const & cert,
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std::string const & key,
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std::string const & target_name_override,
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grpc::ChannelArguments const & arguments)
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{
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// create channels
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std::string const addresses = etcd::detail::strip_and_resolve_addresses(address);
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grpc::ChannelArguments grpc_args = arguments;
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grpc_args.SetMaxSendMessageSize(std::numeric_limits<int>::max());
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grpc_args.SetMaxReceiveMessageSize(std::numeric_limits<int>::max());
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std::shared_ptr<grpc::ChannelCredentials> creds = grpc::SslCredentials(
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etcd::detail::make_ssl_credentials(ca, cert, key));
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if (!target_name_override.empty()) {
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grpc_args.SetString(GRPC_SSL_TARGET_NAME_OVERRIDE_ARG, target_name_override);
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}
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this->channel = grpc::CreateCustomChannel(addresses, creds, grpc_args);
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this->token_authenticator.reset(new TokenAuthenticator());
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// setup stubs
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stubs.reset(new EtcdServerStubs{});
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stubs->kvServiceStub = KV::NewStub(this->channel);
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stubs->watchServiceStub= Watch::NewStub(this->channel);
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stubs->leaseServiceStub= Lease::NewStub(this->channel);
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stubs->lockServiceStub = Lock::NewStub(this->channel);
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stubs->electionServiceStub = Election::NewStub(this->channel);
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}
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etcd::Client *etcd::Client::WithSSL(std::string const & etcd_url,
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std::string const & ca,
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std::string const & cert,
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std::string const & key,
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std::string const & target_name_override,
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std::string const & load_balancer) {
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return new etcd::Client(etcd_url, ca, cert, key, target_name_override, load_balancer);
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}
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etcd::Client *etcd::Client::WithSSL(std::string const & etcd_url,
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grpc::ChannelArguments const & arguments,
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std::string const & ca,
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std::string const & cert,
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std::string const & key,
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std::string const & target_name_override) {
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return new etcd::Client(etcd_url, ca, cert, key, target_name_override, arguments);
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}
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pplx::task<etcd::Response> etcd::Client::head()
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{
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etcdv3::ActionParameters params;
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params.auth_token.assign(this->token_authenticator->renew_if_expired());
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params.kv_stub = stubs->kvServiceStub.get();
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std::shared_ptr<etcdv3::AsyncHeadAction> call(new etcdv3::AsyncHeadAction(params));
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return Response::create(call);
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}
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pplx::task<etcd::Response> etcd::Client::get(std::string const & key)
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{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.withPrefix = false;
|
|
params.kv_stub = stubs->kvServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncRangeAction> call(new etcdv3::AsyncRangeAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::set(std::string const & key, std::string const & value, int ttl)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.value.assign(value);
|
|
params.kv_stub = stubs->kvServiceStub.get();
|
|
|
|
if(ttl > 0)
|
|
{
|
|
auto res = leasegrant(ttl).get();
|
|
if(!res.is_ok())
|
|
{
|
|
return pplx::task<etcd::Response>([res]()
|
|
{
|
|
return etcd::Response(res.error_code(), res.error_message().c_str());
|
|
});
|
|
}
|
|
else
|
|
{
|
|
params.lease_id = res.value().lease();
|
|
}
|
|
}
|
|
|
|
std::shared_ptr<etcdv3::AsyncSetAction> call(new etcdv3::AsyncSetAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::set(std::string const & key, std::string const & value, int64_t leaseid)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.value.assign(value);
|
|
params.lease_id = leaseid;
|
|
params.kv_stub = stubs->kvServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncSetAction> call(new etcdv3::AsyncSetAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
|
|
pplx::task<etcd::Response> etcd::Client::add(std::string const & key, std::string const & value, int ttl)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.value.assign(value);
|
|
params.kv_stub = stubs->kvServiceStub.get();
|
|
|
|
if(ttl > 0)
|
|
{
|
|
auto res = leasegrant(ttl).get();
|
|
if(!res.is_ok())
|
|
{
|
|
return pplx::task<etcd::Response>([res]()
|
|
{
|
|
return etcd::Response(res.error_code(), res.error_message().c_str());
|
|
});
|
|
}
|
|
else
|
|
{
|
|
params.lease_id = res.value().lease();
|
|
}
|
|
}
|
|
std::shared_ptr<etcdv3::AsyncSetAction> call(new etcdv3::AsyncSetAction(params, true));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::add(std::string const & key, std::string const & value, int64_t leaseid)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.value.assign(value);
|
|
params.lease_id = leaseid;
|
|
params.kv_stub = stubs->kvServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncSetAction> call(new etcdv3::AsyncSetAction(params,true));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::put(std::string const & key, std::string const & value) {
|
|
etcdv3::ActionParameters params;
|
|
params.key.assign(key);
|
|
params.value.assign(value);
|
|
params.kv_stub = stubs->kvServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncPutAction> call(new etcdv3::AsyncPutAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::modify(std::string const & key, std::string const & value, int ttl)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.value.assign(value);
|
|
params.kv_stub = stubs->kvServiceStub.get();
|
|
|
|
if(ttl > 0)
|
|
{
|
|
auto res = leasegrant(ttl).get();
|
|
if(!res.is_ok())
|
|
{
|
|
return pplx::task<etcd::Response>([res]()
|
|
{
|
|
return etcd::Response(res.error_code(), res.error_message().c_str());
|
|
});
|
|
}
|
|
else
|
|
{
|
|
params.lease_id = res.value().lease();
|
|
}
|
|
}
|
|
std::shared_ptr<etcdv3::AsyncUpdateAction> call(new etcdv3::AsyncUpdateAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::modify(std::string const & key, std::string const & value, int64_t leaseid)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.value.assign(value);
|
|
params.lease_id = leaseid;
|
|
params.kv_stub = stubs->kvServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncUpdateAction> call(new etcdv3::AsyncUpdateAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
|
|
pplx::task<etcd::Response> etcd::Client::modify_if(std::string const & key, std::string const & value, std::string const & old_value, int ttl)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.value.assign(value);
|
|
params.old_value.assign(old_value);
|
|
params.kv_stub = stubs->kvServiceStub.get();
|
|
|
|
if(ttl > 0)
|
|
{
|
|
auto res = leasegrant(ttl).get();
|
|
if(!res.is_ok())
|
|
{
|
|
return pplx::task<etcd::Response>([res]()
|
|
{
|
|
return etcd::Response(res.error_code(), res.error_message().c_str());
|
|
});
|
|
}
|
|
else
|
|
{
|
|
params.lease_id = res.value().lease();
|
|
}
|
|
}
|
|
std::shared_ptr<etcdv3::AsyncCompareAndSwapAction> call(
|
|
new etcdv3::AsyncCompareAndSwapAction(params,etcdv3::AtomicityType::PREV_VALUE));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::modify_if(std::string const & key, std::string const & value, std::string const & old_value, int64_t leaseid)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.value.assign(value);
|
|
params.old_value.assign(old_value);
|
|
params.lease_id = leaseid;
|
|
params.kv_stub = stubs->kvServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncCompareAndSwapAction> call(
|
|
new etcdv3::AsyncCompareAndSwapAction(params,etcdv3::AtomicityType::PREV_VALUE));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::modify_if(std::string const & key, std::string const & value, int64_t old_index, int ttl)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.value.assign(value);
|
|
params.old_revision = old_index;
|
|
params.kv_stub = stubs->kvServiceStub.get();
|
|
if(ttl > 0)
|
|
{
|
|
auto res = leasegrant(ttl).get();
|
|
if(!res.is_ok())
|
|
{
|
|
return pplx::task<etcd::Response>([res]()
|
|
{
|
|
return etcd::Response(res.error_code(), res.error_message().c_str());
|
|
});
|
|
}
|
|
else
|
|
{
|
|
params.lease_id = res.value().lease();
|
|
}
|
|
}
|
|
std::shared_ptr<etcdv3::AsyncCompareAndSwapAction> call(
|
|
new etcdv3::AsyncCompareAndSwapAction(params,etcdv3::AtomicityType::PREV_INDEX));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::modify_if(std::string const & key, std::string const & value, int64_t old_index, int64_t leaseid)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.value.assign(value);
|
|
params.lease_id = leaseid;
|
|
params.old_revision = old_index;
|
|
params.kv_stub = stubs->kvServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncCompareAndSwapAction> call(
|
|
new etcdv3::AsyncCompareAndSwapAction(params,etcdv3::AtomicityType::PREV_INDEX));
|
|
return Response::create(call);
|
|
}
|
|
|
|
|
|
pplx::task<etcd::Response> etcd::Client::rm(std::string const & key)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.withPrefix = false;
|
|
params.kv_stub = stubs->kvServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncDeleteAction> call(new etcdv3::AsyncDeleteAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::rm_if(std::string const & key, std::string const & old_value)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.old_value.assign(old_value);
|
|
params.kv_stub = stubs->kvServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncCompareAndDeleteAction> call(
|
|
new etcdv3::AsyncCompareAndDeleteAction(params,etcdv3::AtomicityType::PREV_VALUE));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::rm_if(std::string const & key, int64_t old_index)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.old_revision = old_index;
|
|
params.kv_stub = stubs->kvServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncCompareAndDeleteAction> call(
|
|
new etcdv3::AsyncCompareAndDeleteAction(params, etcdv3::AtomicityType::PREV_INDEX));;
|
|
return Response::create(call);
|
|
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::rmdir(std::string const & key, bool recursive)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.withPrefix = recursive;
|
|
params.kv_stub = stubs->kvServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncDeleteAction> call(new etcdv3::AsyncDeleteAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::rmdir(std::string const & key, const char *range_end)
|
|
{
|
|
return rmdir(key, std::string(range_end));
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::rmdir(std::string const & key, std::string const &range_end)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.range_end.assign(range_end);
|
|
params.withPrefix = false;
|
|
params.kv_stub = stubs->kvServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncDeleteAction> call(new etcdv3::AsyncDeleteAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::ls(std::string const & key)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.withPrefix = true;
|
|
params.limit = 0; // default no limit.
|
|
params.kv_stub = stubs->kvServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncRangeAction> call(new etcdv3::AsyncRangeAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::ls(std::string const & key, size_t const limit)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.withPrefix = true;
|
|
params.limit = limit;
|
|
params.kv_stub = stubs->kvServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncRangeAction> call(new etcdv3::AsyncRangeAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::ls(std::string const & key, std::string const &range_end)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.range_end.assign(range_end);
|
|
params.withPrefix = false;
|
|
params.limit = 0; // default no limit.
|
|
params.kv_stub = stubs->kvServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncRangeAction> call(new etcdv3::AsyncRangeAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::ls(std::string const & key, std::string const &range_end, size_t const limit)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.range_end.assign(range_end);
|
|
params.withPrefix = false;
|
|
params.limit = limit;
|
|
params.kv_stub = stubs->kvServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncRangeAction> call(new etcdv3::AsyncRangeAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::watch(std::string const & key, bool recursive)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.withPrefix = recursive;
|
|
params.watch_stub = stubs->watchServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncWatchAction> call(new etcdv3::AsyncWatchAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::watch(std::string const & key, int64_t fromIndex, bool recursive)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.withPrefix = recursive;
|
|
params.revision = fromIndex;
|
|
params.watch_stub = stubs->watchServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncWatchAction> call(new etcdv3::AsyncWatchAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::watch(std::string const & key, const char *range_end)
|
|
{
|
|
return watch(key, std::string(range_end));
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::watch(std::string const & key, std::string const & range_end)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.range_end.assign(range_end);
|
|
params.withPrefix = false;
|
|
params.watch_stub = stubs->watchServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncWatchAction> call(new etcdv3::AsyncWatchAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::watch(std::string const & key, std::string const & range_end, int64_t fromIndex)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key.assign(key);
|
|
params.range_end.assign(range_end);
|
|
params.withPrefix = false;
|
|
params.revision = fromIndex;
|
|
params.watch_stub = stubs->watchServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncWatchAction> call(new etcdv3::AsyncWatchAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::leasegrant(int ttl)
|
|
{
|
|
// lease grant is special, that we are expected the callback could be invoked
|
|
// immediately after the lease is granted by the server.
|
|
return Response::create<etcdv3::AsyncLeaseGrantAction>([this, ttl]() {
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.ttl = ttl;
|
|
params.lease_stub = stubs->leaseServiceStub.get();
|
|
return std::make_shared<etcdv3::AsyncLeaseGrantAction>(params);
|
|
});
|
|
}
|
|
|
|
pplx::task<std::shared_ptr<etcd::KeepAlive>> etcd::Client::leasekeepalive(int ttl) {
|
|
return pplx::task<std::shared_ptr<etcd::KeepAlive>>([this, ttl]()
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.ttl = ttl;
|
|
params.lease_stub = stubs->leaseServiceStub.get();
|
|
auto call = std::make_shared<etcdv3::AsyncLeaseGrantAction>(params);
|
|
|
|
call->waitForResponse();
|
|
auto v3resp = call->ParseResponse();
|
|
return std::make_shared<KeepAlive>(*this, ttl, v3resp.get_value().kvs.lease());
|
|
});
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::leaserevoke(int64_t lease_id)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.lease_id = lease_id;
|
|
params.lease_stub = stubs->leaseServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncLeaseRevokeAction> call(new etcdv3::AsyncLeaseRevokeAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::leasetimetolive(int64_t lease_id)
|
|
{
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.lease_id = lease_id;
|
|
params.lease_stub = stubs->leaseServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncLeaseTimeToLiveAction> call(new etcdv3::AsyncLeaseTimeToLiveAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::lock(std::string const &key) {
|
|
// routines in lock usually will be fast, less than 10 seconds.
|
|
//
|
|
// (base on our experiences in vineyard and GraphScope).
|
|
static const int DEFAULT_LEASE_TTL_FOR_LOCK = 10;
|
|
return this->lock(key, DEFAULT_LEASE_TTL_FOR_LOCK);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::lock(std::string const &key, int lease_ttl) {
|
|
return this->leasekeepalive(lease_ttl).then([this, key](
|
|
pplx::task<std::shared_ptr<etcd::KeepAlive>> const& resp_task) {
|
|
auto const &keepalive = resp_task.get();
|
|
|
|
int64_t lease_id = keepalive->Lease();
|
|
{
|
|
std::lock_guard<std::mutex> lexical_scope_lock(mutex_for_keepalives);
|
|
this->keep_alive_for_locks[lease_id] = keepalive;
|
|
}
|
|
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key = key;
|
|
params.lease_id = lease_id;
|
|
params.lock_stub = stubs->lockServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncLockAction> call(new etcdv3::AsyncLockAction(params));
|
|
|
|
auto lock_resp = Response::create_sync(call);
|
|
{
|
|
std::lock_guard<std::mutex> lexical_scope_lock(mutex_for_keepalives);
|
|
if (lock_resp.is_ok()) {
|
|
this->leases_for_locks[lock_resp.lock_key()] = lease_id;
|
|
} else {
|
|
this->keep_alive_for_locks.erase(lease_id);
|
|
}
|
|
}
|
|
return lock_resp;
|
|
});
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::lock_with_lease(std::string const &key,
|
|
int64_t lease_id) {
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key = key;
|
|
params.lease_id = lease_id;
|
|
params.lock_stub = stubs->lockServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncLockAction> call(new etcdv3::AsyncLockAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::unlock(std::string const &lock_key) {
|
|
// issue a "unlock" request
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.key = lock_key;
|
|
params.lock_stub = stubs->lockServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncUnlockAction> call(new etcdv3::AsyncUnlockAction(params));
|
|
|
|
// cancel the KeepAlive first, if it exists
|
|
{
|
|
std::lock_guard<std::mutex> lexical_scope_lock(mutex_for_keepalives);
|
|
auto p_leases = this->leases_for_locks.find(lock_key);
|
|
if (p_leases != this->leases_for_locks.end()) {
|
|
auto p_keeps_alive = this->keep_alive_for_locks.find(p_leases->second);
|
|
if (p_keeps_alive != this->keep_alive_for_locks.end()) {
|
|
this->keep_alive_for_locks.erase(p_keeps_alive);
|
|
} else {
|
|
#if !defined(NDEBUG)
|
|
std::cerr << "Keepalive for lease not found" << std::endl;
|
|
#endif
|
|
}
|
|
this->leases_for_locks.erase(p_leases);
|
|
} else {
|
|
#if !defined(NDEBUG)
|
|
std::cerr << "Lease for lock not found" << std::endl;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
// wait in the io_context loop.
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::txn(etcdv3::Transaction const &txn) {
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.kv_stub = stubs->kvServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncTxnAction> call(new etcdv3::AsyncTxnAction(params, txn));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::campaign(
|
|
std::string const &name, int64_t lease_id, std::string const &value) {
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.name = name;
|
|
params.lease_id = lease_id;
|
|
params.value = value;
|
|
params.election_stub = stubs->electionServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncCampaignAction> call(new etcdv3::AsyncCampaignAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::proclaim(
|
|
std::string const &name, int64_t lease_id,
|
|
std::string const &key, int64_t revision, std::string const &value) {
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.name = name;
|
|
params.lease_id = lease_id;
|
|
params.key = key;
|
|
params.revision = revision;
|
|
params.value = value;
|
|
params.election_stub = stubs->electionServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncProclaimAction> call(new etcdv3::AsyncProclaimAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::leader(std::string const &name) {
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.name = name;
|
|
params.election_stub = stubs->electionServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncLeaderAction> call(new etcdv3::AsyncLeaderAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
std::unique_ptr<etcd::Client::Observer> etcd::Client::observe(
|
|
std::string const &name, const bool once) {
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.name.assign(name);
|
|
params.election_stub = stubs->electionServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncObserveAction> call(new etcdv3::AsyncObserveAction(params, once));
|
|
std::unique_ptr<Observer> observer(new Observer());
|
|
observer->action = call;
|
|
observer->resp = Response::create(call);
|
|
return observer;
|
|
}
|
|
|
|
std::unique_ptr<etcd::Client::Observer> etcd::Client::observe(
|
|
std::string const &name, std::function<void(Response)> callback, const bool once) {
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.name.assign(name);
|
|
params.election_stub = stubs->electionServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncObserveAction> call(new etcdv3::AsyncObserveAction(params, once));
|
|
std::unique_ptr<Observer> observer(new Observer());
|
|
observer->action = call;
|
|
observer->resp = Response::create(call, callback);
|
|
return observer;
|
|
}
|
|
|
|
pplx::task<etcd::Response> etcd::Client::resign(
|
|
std::string const &name, int64_t lease_id, std::string const &key, int64_t revision) {
|
|
etcdv3::ActionParameters params;
|
|
params.auth_token.assign(this->token_authenticator->renew_if_expired());
|
|
params.name = name;
|
|
params.lease_id = lease_id;
|
|
params.key = key;
|
|
params.revision = revision;
|
|
params.election_stub = stubs->electionServiceStub.get();
|
|
std::shared_ptr<etcdv3::AsyncResignAction> call(new etcdv3::AsyncResignAction(params));
|
|
return Response::create(call);
|
|
}
|
|
|
|
const std::string &etcd::Client::current_auth_token() const {
|
|
return this->token_authenticator->renew_if_expired();
|
|
}
|
|
|
|
etcd::Client::Observer::~Observer() {
|
|
if (action != nullptr) {
|
|
action->CancelObserve();
|
|
resp.wait();
|
|
}
|
|
}
|