1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef NET_TOOLS_FLIP_SERVER_LOADTIME_MEASUREMENT_H__
#define NET_TOOLS_FLIP_SERVER_LOADTIME_MEASUREMENT_H__
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <map>
#include <string>
#include <vector>
// Class to handle loadtime measure related urls, which all start with testing
// The in memory server has a singleton object of this class. It includes a
// html file containing javascript to go through a list of urls and upload the
// loadtime. The users can modify urls.txt to define the urls they want to
// measure and start with downloading the html file from browser.
class LoadtimeMeasurement {
public:
LoadtimeMeasurement(const std::string& urls_file,
const std::string& pageload_html_file)
: num_urls_(0), pageload_html_file_(pageload_html_file) {
std::string urls_string;
read_file_to_string(urls_file.c_str(), &urls_string);
split_string(urls_string, '\n', &urls_);
num_urls_ = urls_.size();
}
// This is the entry function for all the loadtime measure related urls
// It handles the request to html file, get_total_iteration to get number
// of urls in the urls file, get each url, report the loadtime for
// each url, and the test is completed.
void ProcessRequest(const std::string& uri, std::string& output) {
// remove "/testing/" from uri to get the action
std::string action = uri.substr(9);
if (pageload_html_file_.find(action) != std::string::npos) {
read_file_to_string(pageload_html_file_.c_str(), &output);
return;
}
if (action.find("get_total_iteration") == 0) {
char buffer[16];
snprintf(buffer, 16, "%d", num_urls_);
output.append(buffer, strlen(buffer));
return;
}
if (action.find("geturl") == 0) {
size_t b = action.find_first_of('=');
if (b != std::string::npos) {
int num = atoi(action.substr(b + 1).c_str());
if (num < num_urls_) {
output.append(urls_[num]);
}
}
return;
}
if (action.find("test_complete") == 0) {
for (std::map<std::string, int>::const_iterator it = loadtimes_.begin();
it != loadtimes_.end(); ++it) {
LOG(INFO) << it->first << " " << it->second;
}
loadtimes_.clear();
output.append("OK");
return;
}
if (action.find("record_page_load") == 0) {
std::vector<std::string> query;
split_string(action, '?', &query);
std::vector<std::string> params;
split_string(query[1], '&', ¶ms);
std::vector<std::string> url;
std::vector<std::string> loadtime;
split_string(params[1], '=', &url);
split_string(params[2], '=', &loadtime);
loadtimes_[url[1]] = atoi(loadtime[1].c_str());
output.append("OK");
return;
}
}
private:
void read_file_to_string(const char* filename, std::string* output) {
output->clear();
int fd = open(filename, 0, "r");
if (fd == -1)
return;
char buffer[4096];
ssize_t read_status = read(fd, buffer, sizeof(buffer));
while (read_status > 0) {
output->append(buffer, static_cast<size_t>(read_status));
do {
read_status = read(fd, buffer, sizeof(buffer));
} while (read_status <= 0 && errno == EINTR);
}
close(fd);
}
void split_string(std::string& str, char sepa,
std::vector<std::string>* sub_strs) {
size_t b = 0;
size_t e = str.find_first_of(sepa, b);
while (e != std::string::npos && e > b) {
sub_strs->push_back(str.substr(b, e - b));
b = e + 1;
e = str.find_first_of(sepa, b);
}
if (b < str.size()) {
sub_strs->push_back(str.substr(b));
}
}
int num_urls_;
std::vector<std::string> urls_;
std::map<std::string, int> loadtimes_;
const std::string pageload_html_file_;
};
#endif // NET_TOOLS_FLIP_SERVER_LOADTIME_MEASUREMENT_H__
|
