-
Notifications
You must be signed in to change notification settings - Fork 2
/
fetchdocket.py
184 lines (157 loc) · 8.08 KB
/
fetchdocket.py
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
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
from pyquery import PyQuery as pq
import requests
from slugify import slugify # from awesome-slugify
import os
import time
import argparse
import sys
from collections import OrderedDict
import csv
import datetime
import re
docketurlprefix = "https://dms.ntsb.gov/pubdms/search/hitlist.cfm?docketID="
docketurlsuffix = "&StartRow=1&EndRow=3000&CurrentPage=1&order=1&sort=0&TXTSEARCHT="
masterurlprefix = "https://dms.ntsb.gov/pubdms/search/"
detailurlprefix = "https://dms.ntsb.gov/"
sleeptime = 0.5 # Delay between scrapes and downloads. 0.3 timed out sometimes. 0.5 seemed OK
parser = argparse.ArgumentParser(description="This file attempts to fetch National Transportation Safety Board docket files.")
parser.add_argument('docketid', metavar='docketid', help='docketID number from NTSB URL for the file you want')
try:
args = parser.parse_args()
except:
parser.print_help()
print("Get the docket ID number from the URL the NTSB gives you with a successful search.")
print("Example: 58493 is the number in http://dms.ntsb.gov/pubdms/search/hitlist.cfm?docketID=58493")
sys.exit(1)
get_input = input
docketid = args.docketid
if not os.path.exists(docketid):
os.mkdir(docketid)
docketurl = docketurlprefix + docketid + docketurlsuffix
print(docketurl)
raw = requests.get(docketurl)
html = pq(raw.content)
accidentnumber = pq(html)('title').text().split()[2] # Grab the third word from the title tag
allrows = pq(html)('tr').filter('.odd') + pq(html)('tr').filter('.leave')
print("Found " + str(len(allrows('tr'))) + " things to download")
totalpages = 0
totalphotos = 0
masterdict = {}
for row in allrows('tr'):
docno = int(pq(pq(row)('td')[0]).text().strip())
masterdict[docno] = {}
docdate = pq(pq(row)('td')[1]).text().strip()
masterdict[docno]['doctitle'] = pq(pq(row)('td')[2]).text() # This needs to get cleaned up
masterdict[docno]['docmasterurl'] = masterurlprefix + pq(pq(pq(pq(row)('td')[2])('a'))).attr('href')
docdate = datetime.datetime.strptime(docdate, "%b %d, %Y")
docdate = datetime.datetime.strftime(docdate, "%Y-%m-%d")
masterdict[docno]['docdate'] = docdate
try:
docpages = int(str(pq(pq(row)('td')[3]).html()).replace("--", "").strip())
except:
docpages = 0
try:
docphotos = int(str(pq(pq(row)('td')[4]).html()).replace("--", "").strip())
except:
docphotos = 0
totalpages += docpages
totalphotos += docphotos
masterdict[docno]['docpages'] = docpages
masterdict[docno]['docphotos'] = docphotos
# print(masterdict[docno])
print("Trying to download the " + str(len(allrows('tr'))) + " files with " + str(totalpages) + " pages and " + str(totalphotos) + " photos")
# Scrape to find URLs, generate local filename
for record in masterdict:
docmasterurl = masterdict[record]["docmasterurl"]
print("Scraping " + docmasterurl)
docmasterraw = requests.get(docmasterurl)
docmasterhtml = pq(docmasterraw.content)
try:
detailurl = detailurlprefix + pq(pq(docmasterhtml)('input')[1]).attr('value')
except:
print("Multiple download options found. Trying to get high-quality one for this record.")
detailurl = detailurlprefix + pq(pq(docmasterhtml)('option')[-2]).attr('value')
if detailurl == "https://dms.ntsb.gov/View":
detailurl = detailurlprefix + re.sub("(.*\')(.*)(\'.*)", r"\2", pq(pq(docmasterhtml)('input')[1]).attr("onclick"))
if len(detailurl) <= 2 or detailurl == "http://dms.ntsb.gov/Download": # If we got a blank or nearly blank download link ...
try:
detailurl = detailurlprefix + pq(pq(docmasterhtml)('option')[-2]).attr('value') # Try to pull from "option" choices on download, taking the second-to-last one
print("Trying alternate download link, maybe, from " + docmasterurl)
except:
print("Still having problems finding download url from " + docmasterurl)
time.sleep(sleeptime) # Wait to avoid pounding server
masterdict[record]["detailurl"] = detailurl
localfilename = masterdict[record]['doctitle']
docdate = masterdict[record]['docdate']
localfilename = slugify(localfilename) # Clean up text, eliminate spaces
localfilename = docdate + "-" + localfilename # prepend date
localfilename = localfilename + "." + detailurl.split(".")[-1] # append correct file extension
localfilename = docketid + "/" + localfilename # use docketid name for subdirectory
masterdict[record]["localfilename"] = localfilename
# Let's get a master dictionary sorted by document number, so we can download in order, maybe.
masterdict = OrderedDict(sorted(masterdict.items(), key=lambda t: t[0]))
"""
Need to better understand earlier error here later, not today. For now a workaround.
Fetching https://dms.ntsb.gov/Download to 8035/1997-03-19-photo-1-n927da-on-runway-17-after-coming-to-a-stop-the-oil-streak-is-visible-left-of-the-runway-centerline.gov/Download.
Traceback (most recent call last):
File "fetchdocket.py", line 124, in <module>
with open(localfilename, 'wb') as localfilehandle:
FileNotFoundError: [Errno 2] No such file or directory: '8035/1997-03-19-photo-1-n927da-on-runway-17-after-coming-to-a-stop-the-oil-streak-is-visible-left-of-the-runway-centerline.gov/Download'
"""
# Download files if we don't already have them
for record in masterdict:
localfilename = masterdict[record]["localfilename"]
detailurl = masterdict[record]["detailurl"]
print(masterdict[record])
if os.path.exists(localfilename):
print(localfilename + " already downloaded. Skipping.")
masterdict[record]['download'] = "File already existed"
else:
print("Fetching " + detailurl + " to " + localfilename + ".")
attempts = 0
success = False
r = requests.get(detailurl, stream=True)
try:
with open(localfilename, 'wb') as localfilehandle:
for chunk in r.iter_content(chunk_size=100*1024):
if chunk:
localfilehandle.write(chunk)
masterdict[record]['download'] = "Good"
time.sleep(sleeptime)
success = True
except:
print(f"!!! Error trying to write to {localfilename}")
masterdict[record]['download'] = "Bad"
time.sleep(sleeptime)
success = False
while attempts < 3 and not success:
try:
r = requests.get(detailurl, stream=True)
with open(localfilename, 'wb') as localfilehandle:
for chunk in r.iter_content(chunk_size=100*1024):
if chunk:
localfilehandle.write(chunk)
masterdict[record]['download'] = "Good"
time.sleep(sleeptime)
success = True
except:
print("*** HEY! This " + detailurl + " thing wasn't working for me. ***")
print("*** Try downloading the right version yourself from " + masterdict[docno]['docmasterurl'] + " ***")
masterdict[record]['download'] = "Bad"
attempts += 1
time.sleep(3*sleeptime) # Extra margins in case of time out or network problems.
print("Attempting to build a CSV")
with open(docketid + ".csv", "w", newline='') as csvfile:
put = csv.writer(csvfile)
headerrowdict = OrderedDict(sorted(masterdict[record].items(), key=lambda t: t[0])) # using last record. It'll be fine.
headerrow = ["accidentnumber", "docketid", "recordnumber"]
for key in headerrowdict.keys():
headerrow.append(key)
put.writerow(headerrow)
for record in masterdict:
row = [accidentnumber, docketid, record]
recorddict = OrderedDict(sorted(masterdict[record].items(), key=lambda t: t[0]))
for key in recorddict.keys():
row.append(recorddict[key])
put.writerow(row)
print("CSV should be saved at " + docketid + ".csv")