[curl] add a curl looper to handle url requests

pull/254/head
Timothy Stack 9 years ago
parent 248dd78f63
commit f286950854

@ -4,6 +4,7 @@ lnav v0.8.0:
* Integration with "papertrailapp.com" for querying and tailing
server log and syslog messages. See the Papertrail section in
the online help for more details.
* Remote files can be opened when linked with libcurl.
* Log formats that are "containers" for other log formats, like
syslog, are now supported. See the online help for more
information.

@ -24,6 +24,7 @@ Lnav requires the following software packages:
zlib - The zlib compression library.
bz2 - The bzip2 compression library.
re2c - The re2c scanner generator.
libcurl - The cURL library for downloading files from URLs.
INSTALLATION

@ -33,9 +33,15 @@ test_num=0
lnav_test="${top_builddir}/src/lnav-test"
export lnav_test
lnav="${top_builddir}/src/lnav"
export lnav
LNAV_LOG_PATH="${top_builddir}/test/test.log"
export LNAV_LOG_PATH
SFTP_TEST_URL="@SFTP_TEST_URL@"
export SFTP_TEST_URL
## BEGIN Functions
LAST_TEST=""

@ -44,6 +44,8 @@ CPPFLAGS="$CPPFLAGS -D_ISOC99_SOURCE -D__STDC_LIMIT_MACROS"
# CFLAGS=`echo $CFLAGS | sed 's/-O2//g'`
# CXXFLAGS=`echo $CXXFLAGS | sed 's/-O2//g'`
AC_ARG_VAR(SFTP_TEST_URL)
AC_ARG_ENABLE([profiling],
AS_HELP_STRING([--enable-profiling],
[Compile with gprof(1) profiling support]))

@ -4,6 +4,7 @@ set(diag_STAT_SRCS
bookmarks.cc
collation-functions.cc
command_executor.cc
curl_looper.cc
db_sub_source.cc
environ_vtab.cc
extension-functions.c
@ -81,6 +82,7 @@ set(diag_STAT_SRCS
command_executor.hh
concise_index.hh
column_namer.hh
curl_looper.hh
field_overlay_source.hh
filter_observer.hh
format-text-files.hh
@ -98,6 +100,7 @@ set(diag_STAT_SRCS
plain_text_source.hh
pretty_printer.hh
ptimec.hh
pthreadpp.hh
readline_callbacks.hh
readline_possibilities.hh
sequence_sink.hh
@ -109,6 +112,7 @@ set(diag_STAT_SRCS
textfile_sub_source.hh
time_T.hh
top_status_source.hh
url_loader.hh
views_vtab.hh
yajl/api/yajl_common.h

@ -102,6 +102,7 @@ noinst_HEADERS = \
column_namer.hh \
command_executor.hh \
concise_index.hh \
curl_looper.hh \
data_scanner.hh \
data_scanner_re.re \
data_parser.hh \
@ -143,6 +144,7 @@ noinst_HEADERS = \
piper_proc.hh \
plain_text_source.hh \
pretty_printer.hh \
pthreadpp.hh \
ptimec.hh \
readline_callbacks.hh \
readline_curses.hh \
@ -166,6 +168,7 @@ noinst_HEADERS = \
time_T.hh \
timer.hh \
top_status_source.hh \
url_loader.hh \
view_curses.hh \
views_vtab.hh \
vt52_curses.hh \
@ -196,6 +199,7 @@ libdiag_a_SOURCES = \
bookmarks.cc \
collation-functions.cc \
command_executor.cc \
curl_looper.cc \
db_sub_source.cc \
environ_vtab.cc \
extension-functions.c \

@ -0,0 +1,258 @@
/**
* Copyright (c) 2015, Timothy Stack
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Timothy Stack nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* @file curl_looper.cc
*/
#include "config.h"
#ifdef HAVE_LIBCURL
#include <curl/multi.h>
#include "curl_looper.hh"
using namespace std;
struct curl_request_eq {
curl_request_eq(const std::string &name) : cre_name(name) {
};
bool operator()(const curl_request *cr) const {
return this->cre_name == cr->get_name();
};
bool operator()(const pair<mstime_t, curl_request *> &pair) const {
return this->cre_name == pair.second->get_name();
};
const std::string &cre_name;
};
int curl_request::debug_cb(CURL *handle,
curl_infotype type,
char *data,
size_t size,
void *userp) {
curl_request *cr = (curl_request *) userp;
if (type == CURLINFO_TEXT) {
while (size > 0 && isspace(data[size - 1])) {
size -= 1;
}
log_debug("%s:%.*s", cr->get_name().c_str(), size, data);
}
return 0;
}
void *curl_looper::trampoline(void *arg)
{
curl_looper *cl = (curl_looper *) arg;
return cl->run();
}
void *curl_looper::run()
{
log_info("curl looper thread started");
while (this->cl_looping) {
this->loop_body();
}
log_info("curl looper thread exiting");
return NULL;
}
void curl_looper::loop_body()
{
mstime_t current_time = getmstime();
int timeout = this->compute_timeout(current_time);
if (this->cl_handle_to_request.empty()) {
mutex_guard mg(this->cl_mutex);
if (this->cl_new_requests.empty() && this->cl_close_requests.empty()) {
mstime_t deadline = current_time + timeout;
struct timespec ts;
ts.tv_sec = deadline / 1000ULL;
ts.tv_nsec = (deadline % 1000ULL) * 1000 * 1000;
log_trace("no requests in progress, waiting %d ms for new ones",
timeout);
pthread_cond_timedwait(&this->cl_cond, &this->cl_mutex, &ts);
}
}
this->perform_io();
this->check_for_finished_requests();
this->check_for_new_requests();
this->requeue_requests(current_time + 5);
}
void curl_looper::perform_io()
{
if (this->cl_handle_to_request.empty()) {
return;
}
mstime_t current_time = getmstime();
int timeout = this->compute_timeout(current_time);
int running_handles;
curl_multi_wait(this->cl_curl_multi,
NULL,
0,
timeout,
NULL);
curl_multi_perform(this->cl_curl_multi, &running_handles);
}
void curl_looper::requeue_requests(mstime_t up_to_time)
{
while (!this->cl_poll_queue.empty() &&
this->cl_poll_queue.front().first <= up_to_time) {
curl_request *cr = this->cl_poll_queue.front().second;
log_debug("%s:polling request is ready again -- %p",
cr->get_name().c_str(), cr);
this->cl_handle_to_request[cr->get_handle()] = cr;
curl_multi_add_handle(this->cl_curl_multi, cr->get_handle());
this->cl_poll_queue.erase(this->cl_poll_queue.begin());
}
}
void curl_looper::check_for_new_requests() {
mutex_guard mg(this->cl_mutex);
while (!this->cl_new_requests.empty()) {
curl_request *cr = this->cl_new_requests.back();
log_info("%s:new curl request %p",
cr->get_name().c_str(),
cr);
this->cl_handle_to_request[cr->get_handle()] = cr;
curl_multi_add_handle(this->cl_curl_multi, cr->get_handle());
this->cl_new_requests.pop_back();
}
while (!this->cl_close_requests.empty()) {
const std::string &name = this->cl_close_requests.back();
vector<curl_request *>::iterator all_iter = find_if(
this->cl_all_requests.begin(),
this->cl_all_requests.end(),
curl_request_eq(name));
log_info("attempting to close request -- %s", name.c_str());
if (all_iter != this->cl_all_requests.end()) {
map<CURL *, curl_request *>::iterator act_iter;
vector<pair<mstime_t, curl_request *> >::iterator poll_iter;
curl_request *cr = *all_iter;
log_info("%s:closing request -- %p",
cr->get_name().c_str(), cr);
(*all_iter)->close();
act_iter = this->cl_handle_to_request.find(cr);
if (act_iter != this->cl_handle_to_request.end()) {
this->cl_handle_to_request.erase(act_iter);
curl_multi_remove_handle(this->cl_curl_multi,
cr->get_handle());
delete cr;
}
poll_iter = find_if(this->cl_poll_queue.begin(),
this->cl_poll_queue.end(),
curl_request_eq(name));
if (poll_iter != this->cl_poll_queue.end()) {
this->cl_poll_queue.erase(poll_iter);
}
this->cl_all_requests.erase(all_iter);
}
else {
log_error("Unable to find request with the name -- %s",
name.c_str());
}
this->cl_close_requests.pop_back();
pthread_cond_broadcast(&this->cl_cond);
}
}
void curl_looper::check_for_finished_requests()
{
CURLMsg *msg;
int msgs_left;
while ((msg = curl_multi_info_read(this->cl_curl_multi, &msgs_left)) != NULL) {
if (msg->msg != CURLMSG_DONE) {
continue;
}
CURL *easy = msg->easy_handle;
map<CURL *, curl_request *>::iterator iter = this->cl_handle_to_request.find(easy);
curl_multi_remove_handle(this->cl_curl_multi, easy);
if (iter != this->cl_handle_to_request.end()) {
curl_request *cr = iter->second;
long delay_ms;
this->cl_handle_to_request.erase(iter);
delay_ms = cr->complete(msg->data.result);
if (delay_ms < 0) {
vector<curl_request *>::iterator all_iter;
log_info("%s:curl_request %p finished, deleting...",
cr->get_name().c_str(), cr);
{
mutex_guard mg(this->cl_mutex);
all_iter = find(this->cl_all_requests.begin(),
this->cl_all_requests.end(),
cr);
if (all_iter != this->cl_all_requests.end()) {
this->cl_all_requests.erase(all_iter);
}
pthread_cond_broadcast(&cl_cond);
}
delete cr;
}
else {
log_debug("%s:curl_request %p is polling, requeueing in %d",
cr->get_name().c_str(),
cr,
delay_ms);
this->cl_poll_queue.push_back(
make_pair(getmstime() + delay_ms, cr));
sort(this->cl_poll_queue.begin(), this->cl_poll_queue.end());
}
}
}
}
#endif

@ -0,0 +1,240 @@
/**
* Copyright (c) 2015, Timothy Stack
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Timothy Stack nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* @file curl_looper.hh
*/
#ifndef curl_looper_hh
#define curl_looper_hh
#include <map>
#include <string>
#include <vector>
#ifndef HAVE_LIBCURL
typedef int CURLcode;
class curl_request {
public:
curl_request(const std::string &name) {
};
};
class curl_looper {
public:
void start() { };
void add_request(curl_request *cr) { };
void close_request(const std::string &name) { };
void process_all() { };
};
#else
#include <curl/curl.h>
#include "auto_mem.hh"
#include "lnav_log.hh"
#include "lnav_util.hh"
#include "pthreadpp.hh"
class curl_request {
public:
curl_request(const std::string &name)
: cr_name(name),
cr_open(true),
cr_handle(curl_easy_cleanup),
cr_completions(0) {
this->cr_handle.reset(curl_easy_init());
curl_easy_setopt(this->cr_handle, CURLOPT_NOSIGNAL, 1);
curl_easy_setopt(this->cr_handle, CURLOPT_ERRORBUFFER, this->cr_error_buffer);
curl_easy_setopt(this->cr_handle, CURLOPT_DEBUGFUNCTION, debug_cb);
curl_easy_setopt(this->cr_handle, CURLOPT_DEBUGDATA, this);
curl_easy_setopt(this->cr_handle, CURLOPT_VERBOSE, 1);
};
virtual ~curl_request() {
};
const std::string &get_name() const {
return this->cr_name;
};
virtual void close() {
this->cr_open = false;
};
bool is_open() {
return this->cr_open;
};
CURL *get_handle() const {
return this->cr_handle;
};
int get_completions() const {
return this->cr_completions;
};
virtual long complete(CURLcode result) {
double total_time = 0, download_size = 0, download_speed = 0;
this->cr_completions += 1;
curl_easy_getinfo(this->cr_handle, CURLINFO_TOTAL_TIME, &total_time);
log_debug("%s: total_time=%f", this->cr_name.c_str(), total_time);
curl_easy_getinfo(this->cr_handle, CURLINFO_SIZE_DOWNLOAD, &download_size);
log_debug("%s: download_size=%f", this->cr_name.c_str(), download_size);
curl_easy_getinfo(this->cr_handle, CURLINFO_SPEED_DOWNLOAD, &download_speed);
log_debug("%s: download_speed=%f", this->cr_name.c_str(), download_speed);
return -1;
};
protected:
static int debug_cb(CURL *handle,
curl_infotype type,
char *data,
size_t size,
void *userp);
const std::string cr_name;
bool cr_open;
auto_mem<CURL> cr_handle;
char cr_error_buffer[CURL_ERROR_SIZE];
int cr_completions;
};
class curl_looper {
public:
curl_looper()
: cl_started(false),
cl_looping(true),
cl_curl_multi(curl_multi_cleanup) {
this->cl_curl_multi.reset(curl_multi_init());
pthread_mutex_init(&this->cl_mutex, NULL);
pthread_cond_init(&this->cl_cond, NULL);
};
~curl_looper() {
this->stop();
pthread_cond_destroy(&this->cl_cond);
pthread_mutex_destroy(&this->cl_mutex);
}
void start() {
if (pthread_create(&this->cl_thread, NULL, trampoline, this) == 0) {
this->cl_started = true;
}
};
void stop() {
if (this->cl_started) {
void *result;
this->cl_looping = false;
{
mutex_guard mg(this->cl_mutex);
pthread_cond_broadcast(&this->cl_cond);
}
log_debug("waiting for curl_looper thread");
pthread_join(this->cl_thread, &result);
log_debug("curl_looper thread joined");
}
};
void process_all() {
this->check_for_new_requests();
this->requeue_requests(LONG_MAX);
while (!this->cl_handle_to_request.empty()) {
this->perform_io();
this->check_for_finished_requests();
}
};
void add_request(curl_request *cr) {
mutex_guard mg(this->cl_mutex);
require(cr != NULL);
this->cl_all_requests.push_back(cr);
this->cl_new_requests.push_back(cr);
pthread_cond_broadcast(&this->cl_cond);
};
void close_request(const std::string &name) {
mutex_guard mg(this->cl_mutex);
this->cl_close_requests.push_back(name);
pthread_cond_broadcast(&this->cl_cond);
};
private:
void *run();
void loop_body();
void perform_io();
void check_for_new_requests();
void check_for_finished_requests();
void requeue_requests(mstime_t up_to_time);
int compute_timeout(mstime_t current_time) const {
int retval = 1000;
if (!this->cl_poll_queue.empty()) {
retval = std::max(
1LL, this->cl_poll_queue.front().first - current_time);
}
ensure(retval > 0);
return retval;
};
static void *trampoline(void *arg);
bool cl_started;
pthread_t cl_thread;
volatile bool cl_looping;
auto_mem<CURLM> cl_curl_multi;
pthread_mutex_t cl_mutex;
pthread_cond_t cl_cond;
std::vector<curl_request *> cl_all_requests;
std::vector<curl_request *> cl_new_requests;
std::vector<std::string> cl_close_requests;
std::map<CURL *, curl_request *> cl_handle_to_request;
std::vector<std::pair<mstime_t, curl_request *> > cl_poll_queue;
};
#endif
#endif

@ -131,6 +131,7 @@
#include "hotkeys.hh"
#include "readline_possibilities.hh"
#include "field_overlay_source.hh"
#include "url_loader.hh"
using namespace std;
@ -1236,7 +1237,10 @@ static void expand_filename(string path, bool required)
{
static_root_mem<glob_t, globfree> gl;
if (glob(path.c_str(), GLOB_NOCHECK, NULL, gl.inout()) == 0) {
if (is_url(path.c_str())) {
return;
}
else if (glob(path.c_str(), GLOB_NOCHECK, NULL, gl.inout()) == 0) {
int lpc;
if (gl->gl_pathc == 1 /*&& gl.gl_matchc == 0*/) {
@ -2272,6 +2276,7 @@ int main(int argc, char *argv[])
case 'd':
lnav_data.ld_debug_log_name = optarg;
lnav_log_level = LOG_LEVEL_TRACE;
break;
case 'a':
@ -2561,6 +2566,14 @@ int main(int argc, char *argv[])
if (startswith(argv[lpc], "pt:")) {
lnav_data.ld_pt_search = argv[lpc];
}
#ifdef HAVE_LIBCURL
else if (is_url(argv[lpc])) {
auto_ptr<url_loader> ul(new url_loader(argv[lpc]));
lnav_data.ld_file_names.insert(make_pair(argv[lpc], ul->copy_fd().release()));
lnav_data.ld_curl_looper.add_request(ul.release());
}
#endif
else if (is_glob(argv[lpc])) {
lnav_data.ld_file_names.insert(make_pair(argv[lpc], -1));
}
@ -2740,6 +2753,7 @@ int main(int argc, char *argv[])
log_info("Executing initial commands");
execute_init_commands(msgs);
wait_for_pipers();
lnav_data.ld_curl_looper.process_all();
rebuild_indexes(false);
for (msg_iter = msgs.begin();
@ -2799,6 +2813,8 @@ int main(int argc, char *argv[])
}
}
else {
lnav_data.ld_curl_looper.start();
init_session();
log_info(" session_id=%s", lnav_data.ld_session_id.c_str());

@ -59,6 +59,7 @@
#include "piper_proc.hh"
#include "term_extra.hh"
#include "ansi_scrubber.hh"
#include "curl_looper.hh"
#include "papertrail_proc.hh"
/** The command modes that are available while viewing a file. */
@ -241,6 +242,8 @@ struct _lnav_data {
term_extra ld_term_extra;
input_state_tracker ld_input_state;
curl_looper ld_curl_looper;
};
extern struct _lnav_data lnav_data;

@ -47,6 +47,7 @@
#include "lnav_commands.hh"
#include "session_data.hh"
#include "command_executor.hh"
#include "url_loader.hh"
using namespace std;
@ -1187,7 +1188,20 @@ static string com_open(string cmdline, vector<string> &args)
auto_mem<char> abspath;
struct stat st;
if (is_glob(fn.c_str())) {
if (is_url(fn.c_str())) {
#ifndef HAVE_LIBCURL
retval = "error: lnav was not compiled with libcurl";
#else
auto_ptr<url_loader> ul(new url_loader(fn));
lnav_data.ld_file_names.insert(make_pair(fn, ul->copy_fd().release()));
lnav_data.ld_curl_looper.add_request(ul.release());
lnav_data.ld_files_to_front.push_back(make_pair(fn, top));
retval = "info: opened URL";
#endif
}
else if (is_glob(fn.c_str())) {
lnav_data.ld_file_names.insert(make_pair(fn, -1));
retval = "info: watching -- " + fn;
}
@ -1273,6 +1287,9 @@ static string com_close(string cmdline, vector<string> &args)
}
}
if (!fn.empty()) {
if (is_url(fn.c_str())) {
lnav_data.ld_curl_looper.close_request(fn);
}
lnav_data.ld_file_names.erase(make_pair(fn, -1));
lnav_data.ld_closed_files.insert(fn);
retval = "info: closed -- " + fn;
@ -1714,6 +1731,18 @@ static string com_shexec(string cmdline, vector<string> &args)
return "";
}
static string com_poll_now(string cmdline, vector<string> &args)
{
if (args.empty()) {
}
else {
lnav_data.ld_curl_looper.process_all();
}
return "";
}
static string com_redraw(string cmdline, vector<string> &args)
{
if (args.empty()) {
@ -1776,5 +1805,6 @@ void init_lnav_commands(readline_context::command_map_t &cmd_map)
if (getenv("lnav_test") != NULL) {
cmd_map["rebuild"] = com_rebuild;
cmd_map["shexec"] = com_shexec;
cmd_map["poll-now"] = com_poll_now;
}
}

@ -42,6 +42,7 @@
#include <unistd.h>
#include <signal.h>
#include <libgen.h>
#include <pthread.h>
#ifdef HAVE_EXECINFO_H
#include <execinfo.h>
@ -68,6 +69,7 @@
#endif
#include "lnav_log.hh"
#include "pthreadpp.hh"
static const size_t BUFFER_SIZE = 256 * 1024;
static const size_t MAX_LOG_LINE_SIZE = 2048;
@ -83,9 +85,10 @@ static const char *CRASH_MSG =
"=========================\n";
FILE *lnav_log_file;
lnav_log_level_t lnav_log_level;
lnav_log_level_t lnav_log_level = LOG_LEVEL_DEBUG;
const char *lnav_log_crash_dir;
const struct termios *lnav_log_orig_termios;
static pthread_mutex_t lnav_log_mutex = PTHREAD_MUTEX_INITIALIZER;
log_state_dumper::log_state_list log_state_dumper::DUMPER_LIST;
@ -101,6 +104,7 @@ static struct {
};
static const char *LEVEL_NAMES[] = {
"T",
"D",
"I",
"W",
@ -196,6 +200,8 @@ void log_msg(lnav_log_level_t level, const char *src_file, int line_number,
return;
}
mutex_guard mg(lnav_log_mutex);
va_start(args, fmt);
gettimeofday(&curr_time, NULL);
localtime_r(&curr_time.tv_sec, &localtm);
@ -233,6 +239,8 @@ void log_msg_extra(const char *fmt, ...)
ssize_t rc;
char *line;
mutex_guard mg(lnav_log_mutex);
va_start(args, fmt);
line = log_alloc();
rc = vsnprintf(line, MAX_LOG_LINE_SIZE - 1, fmt, args);
@ -248,6 +256,8 @@ void log_msg_extra_complete()
{
char *line;
mutex_guard mg(lnav_log_mutex);
line = log_alloc();
line[0] = '\n';
log_ring.lr_length += 1;

@ -46,6 +46,7 @@
#endif
enum lnav_log_level_t {
LOG_LEVEL_TRACE,
LOG_LEVEL_DEBUG,
LOG_LEVEL_INFO,
LOG_LEVEL_WARNING,
@ -113,6 +114,9 @@ extern enum lnav_log_level_t lnav_log_level;
#define log_debug(fmt...) \
log_msg_wrapper(LOG_LEVEL_DEBUG, fmt);
#define log_trace(fmt...) \
log_msg_wrapper(LOG_LEVEL_TRACE, fmt);
#define require(e) \
((void) ((e) ? 0 : __require (#e, __FILE__, __LINE__)))
#define __require(e, file, line) \

@ -41,9 +41,20 @@
#include "auto_fd.hh"
#include "lnav_util.hh"
#include "pcrepp.hh"
using namespace std;
bool is_url(const char *fn)
{
static pcrepp url_re("^(file|https?|ftps?||scp|sftp):");
pcre_context_static<30> pc;
pcre_input pi(fn);
return url_re.match(pc, pi);
}
std::string hash_string(const std::string &str)
{
byte_array<2, uint64> hash;

@ -36,6 +36,7 @@
#include <math.h>
#include <time.h>
#include <sys/time.h>
#include <poll.h>
#include <sys/types.h>
@ -107,6 +108,16 @@ inline time_t hour_num(time_t ti)
std::string time_ago(time_t last_time);
typedef int64_t mstime_t;
inline mstime_t getmstime() {
struct timeval tv;
gettimeofday(&tv, NULL);
return tv.tv_sec * 1000ULL + tv.tv_usec / 1000ULL;
}
#if SIZEOF_OFF_T == 8
#define FORMAT_OFF_T "%qd"
#elif SIZEOF_OFF_T == 4
@ -173,6 +184,8 @@ inline bool is_glob(const char *fn)
strchr(fn, '[') != NULL);
};
bool is_url(const char *fn);
inline bool startswith(const char *str, const char *prefix)
{
return strncmp(str, prefix, strlen(prefix)) == 0;

@ -0,0 +1,51 @@
/**
* Copyright (c) 2015, Timothy Stack
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Timothy Stack nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* @file pthreadpp.hh
*/
#ifndef pthreadpp_hh
#define pthreadpp_hh
#include <pthread.h>
class mutex_guard {
public:
mutex_guard(pthread_mutex_t &mutex) : mg_mutex(mutex) {
pthread_mutex_lock(&mutex);
};
~mutex_guard() {
pthread_mutex_unlock(&this->mg_mutex);
};
private:
pthread_mutex_t &mg_mutex;
};
#endif

@ -0,0 +1,143 @@
/**
* Copyright (c) 2015, Timothy Stack
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Timothy Stack nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef url_loader_hh
#define url_loader_hh
#ifdef HAVE_LIBCURL
#include <curl/curl.h>
class url_loader : public curl_request {
public:
url_loader(const std::string &url) : curl_request(url), ul_resume_offset(0) {
char piper_tmpname[PATH_MAX];
const char *tmpdir;
if ((tmpdir = getenv("TMPDIR")) == NULL) {
tmpdir = _PATH_VARTMP;
}
snprintf(piper_tmpname, sizeof(piper_tmpname),
"%s/lnav.url.XXXXXX",
tmpdir);
if ((this->ul_fd = mkstemp(piper_tmpname)) == -1) {
return;
}
unlink(piper_tmpname);
curl_easy_setopt(this->cr_handle, CURLOPT_URL, this->cr_name.c_str());
curl_easy_setopt(this->cr_handle, CURLOPT_WRITEFUNCTION, write_cb);
curl_easy_setopt(this->cr_handle, CURLOPT_WRITEDATA, this);
curl_easy_setopt(this->cr_handle, CURLOPT_FILETIME, 1);
};
int get_fd() const {
return this->ul_fd.get();
};
auto_fd copy_fd() const {
return this->ul_fd;
};
long complete(CURLcode result) {
curl_request::complete(result);
switch (result) {
case CURLE_OK:
break;
case CURLE_BAD_DOWNLOAD_RESUME:
break;
default:
log_error("%s:curl failure -- %ld %s",
this->cr_name.c_str(), result, curl_easy_strerror(result));
write(this->ul_fd, this->cr_error_buffer, strlen(this->cr_error_buffer));
return -1;
}
long file_time;
CURLcode rc;
rc = curl_easy_getinfo(this->cr_handle, CURLINFO_FILETIME, &file_time);
if (rc == CURLE_OK) {
time_t current_time;
time(&current_time);
if (file_time == -1 ||
(current_time - file_time) < FOLLOW_IF_MODIFIED_SINCE) {
char range[64];
struct stat st;
off_t start;
fstat(this->ul_fd, &st);
if (st.st_size > 0) {
start = st.st_size - 1;
this->ul_resume_offset = 1;
}
else {
start = 0;
this->ul_resume_offset = 0;
}
snprintf(range, sizeof(range), "%ld-", (long) start);
curl_easy_setopt(this->cr_handle, CURLOPT_RANGE, range);
return 2000;
}
else {
log_debug("URL was not recently modified, not tailing: %s",
this->cr_name.c_str());
}
}
else {
log_error("Could not get file time for URL: %s -- %s",
this->cr_name.c_str(), curl_easy_strerror(rc));
}
return -1;
};
private:
static const long FOLLOW_IF_MODIFIED_SINCE = 60 * 60;
static ssize_t write_cb(void *contents, size_t size, size_t nmemb, void *userp) {
url_loader *ul = (url_loader *) userp;
char *c_contents = (char *) contents;
ssize_t retval;
c_contents += ul->ul_resume_offset;
retval = write(ul->ul_fd, c_contents, (size * nmemb) - ul->ul_resume_offset);
retval += ul->ul_resume_offset;
ul->ul_resume_offset = 0;
return retval;
}
auto_fd ul_fd;
off_t ul_resume_offset;
};
#endif
#endif

@ -158,6 +158,7 @@ drive_sql_LDADD = \
$(PCRE_LIBS) \
$(CURSES_LIB) \
$(READLINE_LIBS) \
$(LIBCURL) \
-lpcrecpp
slicer_SOURCES = slicer.cc
@ -169,6 +170,7 @@ scripty_LDADD = ../src/libdiag.a
dist_noinst_SCRIPTS = \
parser_debugger.py \
test_cmds.sh \
test_curl.sh \
test_data_parser.sh \
test_format_loader.sh \
test_grep_proc.sh \
@ -296,6 +298,11 @@ TESTS = \
test_yajlpp \
test_pretty_print.sh
if HAVE_LIBCURL
TESTS += \
test_curl.sh
endif
DISTCLEANFILES = \
*.dat \
*.err \

@ -0,0 +1,48 @@
#! /bin/bash
if test x"$SFTP_TEST_URL" == x""; then
exit 0
fi
run_test ${lnav_test} -n \
file://${test_dir}/logfile_access_log.0
check_output "file URL is not working" <<EOF
192.168.202.254 - - [20/Jul/2009:22:59:26 +0000] "GET /vmw/cgi/tramp HTTP/1.0" 200 134 "-" "gPXE/0.9.7"
192.168.202.254 - - [20/Jul/2009:22:59:29 +0000] "GET /vmw/vSphere/default/vmkboot.gz HTTP/1.0" 404 46210 "-" "gPXE/0.9.7"
192.168.202.254 - - [20/Jul/2009:22:59:29 +0000] "GET /vmw/vSphere/default/vmkernel.gz HTTP/1.0" 200 78929 "-" "gPXE/0.9.7"
EOF
cp ${test_dir}/logfile_access_log.0 curl_access_log.0
run_test ${lnav_test} -n \
$SFTP_TEST_URL/`pwd`/curl_access_log.0
check_output "sftp URL is not working" <<EOF
192.168.202.254 - - [20/Jul/2009:22:59:26 +0000] "GET /vmw/cgi/tramp HTTP/1.0" 200 134 "-" "gPXE/0.9.7"
192.168.202.254 - - [20/Jul/2009:22:59:29 +0000] "GET /vmw/vSphere/default/vmkboot.gz HTTP/1.0" 404 46210 "-" "gPXE/0.9.7"
192.168.202.254 - - [20/Jul/2009:22:59:29 +0000] "GET /vmw/vSphere/default/vmkernel.gz HTTP/1.0" 200 78929 "-" "gPXE/0.9.7"
EOF
run_test ${lnav_test} -n \
-c ":poll-now" \
-c ":shexec echo foo >> curl_access_log.0" \
$SFTP_TEST_URL/`pwd`/curl_access_log.0
check_output "sftp URL is not working" <<EOF
192.168.202.254 - - [20/Jul/2009:22:59:26 +0000] "GET /vmw/cgi/tramp HTTP/1.0" 200 134 "-" "gPXE/0.9.7"
192.168.202.254 - - [20/Jul/2009:22:59:29 +0000] "GET /vmw/vSphere/default/vmkboot.gz HTTP/1.0" 404 46210 "-" "gPXE/0.9.7"
192.168.202.254 - - [20/Jul/2009:22:59:29 +0000] "GET /vmw/vSphere/default/vmkernel.gz HTTP/1.0" 200 78929 "-" "gPXE/0.9.7"
foo
EOF
run_test ${lnav_test} -n \
-c ":open $SFTP_TEST_URL/`pwd`/curl_access_log.0" \
${test_dir}/logfile_empty.0
check_output "sftp URL is not working" <<EOF
192.168.202.254 - - [20/Jul/2009:22:59:26 +0000] "GET /vmw/cgi/tramp HTTP/1.0" 200 134 "-" "gPXE/0.9.7"
192.168.202.254 - - [20/Jul/2009:22:59:29 +0000] "GET /vmw/vSphere/default/vmkboot.gz HTTP/1.0" 404 46210 "-" "gPXE/0.9.7"
192.168.202.254 - - [20/Jul/2009:22:59:29 +0000] "GET /vmw/vSphere/default/vmkernel.gz HTTP/1.0" 200 78929 "-" "gPXE/0.9.7"
foo
EOF
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