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[tor-commits] [ooni-probe/master] Add report archival script



commit cf8a8cc3a7a5798025f2c7d33bed3f8c8824f1af
Author: aagbsn <aagbsn@xxxxxxxx>
Date:   Mon Dec 24 04:15:54 2012 +0000

    Add report archival script
---
 scripts/archive_reports.py |  166 ++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 166 insertions(+), 0 deletions(-)

diff --git a/scripts/archive_reports.py b/scripts/archive_reports.py
new file mode 100755
index 0000000..f48fa08
--- /dev/null
+++ b/scripts/archive_reports.py
@@ -0,0 +1,166 @@
+#!/usr/bin/env python
+import yaml
+import sys
+import glob
+import fcntl
+import os
+import re
+from ipaddr import IPAddress
+from datetime import timedelta
+from datetime import datetime
+from ooni.otime import fromTimestamp, timestamp
+from ooni.otime import InvalidTimestampFormat, utcDateNow
+from ooni.utils import log
+
+###############################################################################
+# You can set some config options here                                        #
+###############################################################################
+report_age = 1 # hours
+report_archive_dir = '/home/user/oonib/reports/archived'
+report_source_dir = '/home/user/oonib/reports'
+valid_test_versions = ['0.1', '0.1.1', '0.4', '0.1.3']
+default_probe_cc = '??'
+target_permission = 0444
+path_permission = 0755
+retry_attempts = 100
+###############################################################################
+
+now = utcDateNow()
+delta = timedelta(hours=report_age)
+
+def filter_reports_by_age(report):
+    try:
+        ts,__,__ = os.path.basename(report).split('_')
+        if now - fromTimestamp(ts) > delta:
+            return True
+    except (InvalidTimestampFormat, ValueError):
+        return False
+
+def validate_fields(fields):
+    log.debug("Report fields are: %s" % fields)
+
+    # check report version
+    if fields['test_version'] not in valid_test_versions:
+        log.err("Report submitted with invalid report version!")
+        return False
+
+    # check report CC
+    #XXX: confirm what value we use for default CC and whether
+    # or not we should support > 2 character CC
+    if fields['probe_cc'] is None:
+        fields['probe_cc'] = default_probe_cc
+    if not re.match('[A-Z\?]{2,4}', fields['probe_cc'].upper()):
+        log.err("Report submitted with invalid CC!")
+        return False
+
+    # check report ASN
+    if fields['probe_asn'] is None:
+        fields['probe_asn'] = 'AS0'
+    if not re.match('^AS[0-9]{1,10}', fields['probe_asn'].upper()):
+        log.err("Report submitted with invalid AS Number!")
+        return False
+
+    # check report timestamp
+    try:
+        datetime_ts = datetime.fromtimestamp(fields['start_time'])
+        datetime_str = timestamp(datetime_ts)
+    except InvalidTimestampFormat:
+        log.err("Report submitted with invalid timestamp!")
+        return False
+
+    # check report IP
+    try:
+        IPAddress(fields['probe_ip'])
+    except ValueError:
+        log.err("Report submitted with invalid IP Address!")
+        return False
+
+    # all looks good!
+    return True
+
+def get_report_header_fields(report_header):
+    required_fields = ['probe_asn', 'probe_cc', 'probe_ip', 'start_time',
+                       'test_name', 'test_version']
+    try:
+        return dict([(k,report_header[k]) for k in required_fields ])
+    except KeyError:
+        return None
+
+def get_target_or_fail(fields, report):
+    # set the target filename
+    reportFormatVersion = fields['test_version']
+    CC                  = fields['probe_cc']
+    # XXX: wouldn't hurt to check timestamp for sanity again?
+    dateInISO8601Format,__,__ = os.path.basename(report).split('_')
+    probeASNumber       = fields['probe_asn']
+
+    # make sure path reportFormatVersion/CC exists
+    path = os.path.abspath(report_archive_dir)
+    for component in [reportFormatVersion, CC]:
+        path = os.path.join(path, component)
+        if not os.path.isdir(path):
+            try:
+                os.mkdir(path, path_permission)
+                log.debug("mkdir path: %s" % path)
+            except OSError:
+                return None
+
+    # if the target file already exists, try to find another filename
+    filename = "%s_%s.yamloo" % (dateInISO8601Format, probeASNumber)
+    target = os.path.join(path, filename)
+
+    # try to get a unique filename. os.open as used below requires
+    # that the file not already exist
+    naming_attempts = 1
+    while os.path.exists(target) and naming_attempts < retry_attempts:
+        filename = "%s_%s.%d.yamloo" % (dateInISO8601Format, probeASNumber,
+                                        naming_attempts)
+        target = os.path.join(path, filename)
+        naming_attempts = naming_attempts + 1
+
+    if naming_attempts >= retry_attempts:
+        log.err("Failed getting unique filename %d times; skipping" % i)
+        return None
+    return target
+
+# grab list of reports
+reports = glob.glob(report_source_dir+'/*')
+reports_to_archive = filter(filter_reports_by_age, reports)
+
+# iterate over the reports to archive
+for report in reports_to_archive:
+    log.debug("Parsing report: %s" % report)
+    try:
+        #XXX: verify that os.fdopen works as expected
+        f = os.fdopen(os.open(report, os.O_RDONLY|os.O_EXCL|os.O_NONBLOCK))
+    except IOError:
+        log.err("Unable to get exclusive lock on %s; skipping" % report)
+        continue
+
+    # parse the header and validate it
+    yamloo = yaml.safe_load_all(f)
+    report_header = yamloo.next()
+    fields = get_report_header_fields(report_header)
+    if not validate_fields(fields):
+        continue
+
+    # get a target filename or fail
+    target = get_target_or_fail(fields, report)
+    if not target:
+        continue
+
+    log.debug("target: %s" % target)
+
+    try:
+        #XXX: My system does not have os.O_EXLOCK. Verify this works as is.
+        g = os.fdopen(os.open(target, os.O_CREAT|os.O_EXCL|os.O_NONBLOCK))
+
+        os.rename(report, target)
+        os.chmod(target, target_permission)
+        f.close()
+        g.close()
+
+    except IOError:
+        # unable to lock the file... still held open?
+        log.err("Failed to lock target file. Possible race condition!")
+        continue



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