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Description:

awslogparser 2.4.0

aws-log-parser
Python module to parse AWS LoadBalancer, CloudFront and WAF logs into Python3 data
classes.
Install
pip install aws-log-parser
Example
Parse all files from S3 with the given bucket/prefix and print the count of
unique ips sorted from highest to lowest.
from collections import Counter
from aws_log_parser import AwsLogParser, LogType

entries = AwsLogParser(
log_type=LogType.CloudFront
).read_url("s3://aws-logs-test-data/cloudfront")

counter = Counter(
entry.client_ip
for entry in entries
)

for ip, count in sorted(counter.items()):
print(f"{ip}: {count}")

See:
https://github.com/dpetzold/aws-log-parser/blob/master/examples/count-hosts.py
for a more complete example.
Walkthrough
The avaliable LogType's are:
* CloudFront
* CloudFrontRTMP
* ClassicLoadBalancer
* LoadBalancer
* WAF

pass the appropriate LogType to AwsLogParser:
>>> from aws_log_parser import AwsLogParser, LogType
>>> parser = AwsLogParser(log_type=LogType.CloudFront)

The general method to read files is read_url. It returns a generator of
dataclasses for the specified LogType. Currently the S3 and file
schemes are supported.
GZipped LoadBalancer logs are supported by passing file_suffix=".gz" to
the AwsLogParser initilizer.
S3:
>>> entries = parser.read_url("s3://aws-logs-test-data/cloudfront")

file:
>>> entries = parser.read_url(f"file://{os.cwd()}/logs/cloudfront")

list:
>>> entries = parser.parse([log_line])

iterate through the log entries and do something:
>>> for entry in entries:
>>> ...

If you need to set the AWS profile or region you can pass it to AwsLogParser:
>>> parser = AwsLogParser(
>>> profile="myprofile",
>>> region="us-west-2",
>>> )

Models
See https://github.com/dpetzold/aws-log-parser/blob/master/aws_log_parser/models.py
CloudFront
CloudFrontWebDistributionLogEntry(
date=datetime.date(2014, 5, 23),
time=datetime.time(1, 13, 11),
edge_location='FRA2',
sent_bytes=182,
client_ip='192.0.2.10',
http_method='GET',
host='d111111abcdef8.cloudfront.net',
uri_stem='/view/my/file.html',
status_code=200,
referrer='www.displaymyfiles.com',
user_agent='Mozilla/4.0 (compatible; MSIE 5.0b1; Mac_PowerPC)',
uri_query=None,
cookie=cookie_fixture,
edge_result_type='RefreshHit',
edge_request_id='MRVMF7KydIvxMWfJIglgwHQwZsbG2IhRJ07sn9AkKUFSHS9EXAMPLE==',
host_header='d111111abcdef8.cloudfront.net',
protocol='http',
received_bytes=None,
time_taken=0.001,
forwarded_for=None,
ssl_protocol=None,
ssl_cipher=None,
edge_response_result_type='RefreshHit',
protocol_version='HTTP/1.1',
)

LoadBalancer
LoadBalancerLogEntry(
type=HttpType.H2,
timestamp=datetime.datetime(2019, 5, 10, 0, 55, 0, 578958, tzinfo=datetime.timezone.utc),
elb='app/my-elb/bae6f4bf83cfba2a',
client=Host(
ip='73.9.17.165',
port=55354,
),
target=Host(
ip='172.18.16.37',
port=80,
),
request_processing_time=0.001,
target_processing_time=0.01,
response_processing_time=0.0,
elb_status_code=301,
target_status_code=301,
received_bytes=287,
sent_bytes=465,
http_request=HttpRequest(
method='GET',
url='https://example.it:443/l/27uM',
query={},
protocol='HTTP/2.0',
),
user_agent='Mozilla/5.0 (iPhone; CPU iPhone OS 12_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 [FBAN/FBIOS;FBDV/iPhone10,6;FBMD/iPhone;FBSN/iOS;FBSV/12.2;FBSS/3;FBCR/T-Mobile;FBID/phone;FBLC/en_US;FBOP/5]',
ssl_cipher='ECDHE-RSA-AES128-GCM-SHA256',
ssl_protocol='TLSv1.2',
target_group_arn='arn:aws:elasticloadbalancing:us-east-1:12345678900:targetgroup/my-elb/4bbbb73e0d3ddadc',
trace_id='Root=1-5cd4cbe4-685415e018175510cb4e3588',
domain_name='example.it',
chosen_cert_arn='arn:aws:acm:us-east-1:12345678900:certificate/3e6b547b-dd22-41f2-9130-32f2c21f0ca0',
matched_rule_priority=0,
request_creation_time=datetime.datetime(2019, 5, 10, 0, 55, 0, 567000, tzinfo=datetime.timezone.utc),
actions_executed=['waf', 'forward'],
redirect_url=None,
error_reason=None,
)

ClassicLoadBalancer
ClassicLoadBalancerLogEntry(
timestamp=datetime.datetime(2021, 12, 4, 0, 0, 8, 506102, tzinfo=datetime.timezone.utc),
elb='awseb-e-r-xxxxxxxx-xxxxxxxxxxxxx',
client=Host(ip='1.1.18.85', port=46806),
target=Host(ip='1.1.54.38', port=80),
request_processing_time=4.5e-05,
target_processing_time=0.004555,
response_processing_time=4.6e-05,
elb_status_code=200,
target_status_code=200,
received_bytes=0,
sent_bytes=639,
http_request=HttpRequest(
method='GET',
url='http://myservice:80/api/v1/111',
path='/api/v1/111',
query={},
protocol='HTTP/1.1',
),
user_agent='requests/3.12.0',
ssl_cipher=None,
ssl_protocol=None
)

WAF
WafLogEntry(
timestamp=datetime.datetime(2018, 8, 8, 0, 44, 30, 589000),
formatVersion=1,
webaclId="385cb038-3a6f-4f2f-ac64-09ab912af590",
terminatingRuleId="Default_Action",
terminatingRuleType="REGULAR",
action="ALLOW",
httpSourceName="CF",
httpSourceId="i-123",
ruleGroupList=[
WafLogEntryRuleGroup(
ruleGroupId="41f4eb08-4e1b-2985-92b5-e8abf434fad3",
terminatingRule=None,
nonTerminatingMatchingRules=[
WafLogEntryNonTerminatingMatchingRules(
action="COUNT", ruleId="4659b169-2083-4a91-bbd4-08851a9aaf74"
)
],
excludedRules=[
WafLogEntryExcludedRules(
exclusionType="EXCLUDED_AS_COUNT",
ruleId="5432a230-0113-5b83-bbb2-89375c5bfa98",
)
],
)
],
rateBasedRuleList=[
WafLogEntryRateGroup(
rateBasedRuleId="7c968ef6-32ec-4fee-96cc-51198e412e7f",
limitKey="IP",
maxRateAllowed=100,
),
WafLogEntryRateGroup(
rateBasedRuleId="462b169-2083-4a93-bbd4-08851a9aaf30",
limitKey="IP",
maxRateAllowed=100,
),
],
nonTerminatingMatchingRules=[
WafLogEntryNonTerminatingMatchingRule(
action="COUNT", ruleId="4659b181-2011-4a91-bbd4-08851a9aaf52"
)
],
httpRequest=WafLogEntryHttpRequest(
clientIp="192.10.23.23",
country="US",
headers=[
WafLogEntryHttpRequestHeader(name="Host", value="127.0.0.1:1989"),
WafLogEntryHttpRequestHeader(name="User-Agent", value="curl/7.51.2"),
WafLogEntryHttpRequestHeader(name="Accept", value="*/*"),
],
uri="/",
args="usernam=abc",
httpVersion="HTTP/1.1",
httpMethod="GET",
requestId="CloudFrontRequestId",
),
)

Development
Run bootstrap.sh to create the virtualenv. The tests can be run with python setup.py test or by running pytest directly.