23b6fb3e6d
When MaxScale is started, a separate thread for the administrative interface is started. This allows the worker threads to handle client requests while the administrative thread handles the lower priority administrative requests. The administrative interface responds to all request with a 200 OK HTTP response. This allows the administrative interface itself to be tested.
105 lines
2.2 KiB
C++
105 lines
2.2 KiB
C++
/*
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* Copyright (c) 2016 MariaDB Corporation Ab
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*
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* Use of this software is governed by the Business Source License included
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* in the LICENSE.TXT file and at www.mariadb.com/bsl11.
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*
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* Change Date: 2019-07-01
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*
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* On the date above, in accordance with the Business Source License, use
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* of this software will be governed by version 2 or later of the General
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* Public License.
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*/
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#include "maxscale/adminclient.hh"
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#include <string>
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#include <maxscale/atomic.h>
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#include <maxscale/hk_heartbeat.h>
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#include <maxscale/log_manager.h>
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using std::string;
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AdminClient::AdminClient(int fd, const struct sockaddr_storage& addr, int timeout):
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m_fd(fd),
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m_timeout(timeout),
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m_addr(addr)
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{
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}
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AdminClient::~AdminClient()
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{
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close(m_fd);
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}
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static bool read_request_header(int fd, int timeout, string& output)
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{
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int64_t start = atomic_read_int64(&hkheartbeat);
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while ((atomic_read_int64(&hkheartbeat) - start) / 10 < timeout)
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{
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char buf[1024];
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int rc = read(fd, buf, sizeof(buf));
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if (rc == -1 && errno != EAGAIN && errno != EWOULDBLOCK)
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{
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return false;
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}
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else if (rc > 0)
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{
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buf[rc] = '\0';
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output += buf;
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if (output.find("\r\n\r\n") != std::string::npos)
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{
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break;
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}
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}
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}
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return true;
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}
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static bool write_response(int fd, int timeout, string input)
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{
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int64_t start = atomic_read_int64(&hkheartbeat);
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while ((atomic_read_int64(&hkheartbeat) - start) / 10 < timeout && input.length() > 0)
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{
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int rc = write(fd, input.c_str(), input.length());
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if (rc == -1 && errno != EAGAIN && errno != EWOULDBLOCK)
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{
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return false;
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}
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else if (rc > 0)
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{
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input.erase(0, rc);
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}
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}
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return true;
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}
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void AdminClient::process()
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{
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string request;
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if (read_request_header(m_fd, m_timeout, request))
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{
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/** Send the Status-Line part of the response */
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string response = "HTTP/1.1 200 OK\r\n";
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response += "\r\n";
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write_response(m_fd, m_timeout, response);
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}
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else
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{
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MXS_ERROR("Failed to read client request: %d, %s", errno, mxs_strerror(errno));
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}
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}
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