Compare commits
12 Commits
Author | SHA1 | Date |
---|---|---|
Stefan Reimer | b5fd5b9fe9 | |
Stefan Reimer | c04e5e8756 | |
Stefan Reimer | 358d1449d8 | |
Stefan Reimer | 1b59eb1628 | |
Stefan Reimer | ce57cf70f4 | |
Stefan Reimer | f0fd0c1e07 | |
Stefan Reimer | 2066e2ba11 | |
Stefan Reimer | 44818f4c9a | |
Stefan Reimer | a51dd26d2f | |
Stefan Reimer | 7a54650552 | |
Stefan Reimer | 71753107cc | |
Stefan Reimer | 1e12bd7807 |
23
CHANGES.md
23
CHANGES.md
|
@ -1,5 +1,28 @@
|
|||
# Changelog
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||||
|
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## 0.9.10
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- Updates aws.lambda parser for Init Duration, incl. tests
|
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|
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## 0.9.9
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- Improved error handling / descreased timouts calling AWS APIs to fail fast in case AWS throttles API calls
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which causes each Lambda call to timout and run for 300s
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- Skip over more invalid vpc flowlog entries
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|
||||
## 0.9.8
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||||
- Fix for ALB AccessLog parser to handle spaces in request_url
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- Improved VPC FlowLog metadata augmentation
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- better error handling for VPC FlowLog parsing
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||||
|
||||
## 0.9.6
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- Augment VPC FlowLogs with ENI metadata incl. global cache
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|
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## 0.9.5
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- Added support for VPC FlowLogs
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|
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## 0.9.4
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- Improved S3 file type detection, also handles one line access logs
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- default fluentd upstream url scheme
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## 0.9.3
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- improved parsing of timestamps incl. subsecond resolution
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- improved parsing of Lambda events to catch RequestIds
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|
|
4
Makefile
4
Makefile
|
@ -11,7 +11,7 @@ PACKAGE_FILE := dist/$(PACKAGE)
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all: test build
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||||
test:
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flake8 --ignore=E501 index.py tests
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flake8 --ignore=E501,W503 index.py tests
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TEST=True pytest --log-cli-level=DEBUG
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|
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clean:
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|
@ -22,7 +22,7 @@ build: $(PACKAGE_FILE)
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$(PACKAGE_FILE):
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rm -rf dist && mkdir dist
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cp -r index.py dist/
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pip install --target dist --no-compile msgpack requests
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pip install --isolated --target dist --no-compile msgpack requests
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cd dist && zip -q -r $(PACKAGE) *
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|
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upload: $(PACKAGE_FILE)
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|
|
|
@ -4,6 +4,6 @@ requests
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|||
flake8
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pytest
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cfnlambda
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awscli
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#awscli
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#pytest-profiling
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#tuna
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|
|
390
index.py
390
index.py
|
@ -14,39 +14,47 @@ import io
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import urllib
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import datetime
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import boto3
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import botocore
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__author__ = "Stefan Reimer"
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__author_email__ = "stefan@zero-downtime.net"
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__version__ = "0.9.4"
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__version__ = "0.9.10"
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# Global alias lookup cache
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# IAM Alias lookup cache
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account_aliases = {}
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# ENI lookup cache
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enis = {}
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# IP lookup cache
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ips = {}
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logger = logging.getLogger(__name__)
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logging.getLogger("urllib3").setLevel(logging.WARNING)
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logging.getLogger('boto3').setLevel(logging.WARNING)
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logging.getLogger('botocore').setLevel(logging.WARNING)
|
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logging.getLogger("boto3").setLevel(logging.WARNING)
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logging.getLogger("botocore").setLevel(logging.WARNING)
|
||||
|
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|
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def boolean(value):
|
||||
if value in ('t', 'T', 'true', 'True', 'TRUE', '1', 1, True):
|
||||
if value in ("t", "T", "true", "True", "TRUE", "1", 1, True):
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||||
return True
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return False
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||||
|
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|
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def decrypt(encrypted):
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try:
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kms = boto3.client('kms')
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plaintext = kms.decrypt(CiphertextBlob=base64.b64decode(encrypted))['Plaintext']
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kms = boto3.client("kms")
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plaintext = kms.decrypt(CiphertextBlob=base64.b64decode(encrypted))["Plaintext"]
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||||
return plaintext.decode()
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except Exception:
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logging.exception("Failed to decrypt via KMS")
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|
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|
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CHUNK_SIZE = 128
|
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DEBUG = boolean(os.getenv('DEBUG', default=False))
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TEST = boolean(os.getenv('TEST', default=False))
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RESOLVE_ACCOUNT = boolean(os.getenv('RESOLVE_ACCOUNT', default=True))
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||||
DEBUG = boolean(os.getenv("DEBUG", default=False))
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TEST = boolean(os.getenv("TEST", default=False))
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RESOLVE_ACCOUNT = boolean(os.getenv("RESOLVE_ACCOUNT", default=True))
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ENHANCE_FLOWLOG = boolean(os.getenv("ENHANCE_FLOWLOG", default=True))
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|
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if DEBUG:
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logging.getLogger().setLevel(logging.DEBUG)
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|
@ -58,7 +66,7 @@ else:
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class EventTime(msgpack.ExtType):
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def __new__(cls, timestamp):
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seconds = int(timestamp)
|
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nanoseconds = int(timestamp % 1 * 10 ** 9)
|
||||
nanoseconds = int(timestamp % 1 * 10**9)
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return super(EventTime, cls).__new__(
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cls,
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code=0,
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||||
|
@ -74,31 +82,123 @@ def fluentd_time(timestamp):
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|||
|
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|
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def get_source(region, account_id):
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""" returns a new base source object
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resolves aws account_id to account alias and caches for lifetime of lambda function
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"""returns a new base source object
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resolves aws account_id to account alias and caches for lifetime of lambda function
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"""
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source = {'account': account_id, 'region': region}
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global RESOLVE_ACCOUNT
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source = {"account": account_id, "region": region}
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if RESOLVE_ACCOUNT and not TEST:
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try:
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if account_id not in account_aliases:
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iam = boto3.client('iam')
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account_aliases[account_id] = iam.list_account_aliases()['AccountAliases'][0]
|
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boto3_config = botocore.config.Config(
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retries=dict(max_attempts=2), connect_timeout=3, read_timeout=5
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)
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iam = boto3.client("iam", config=boto3_config)
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account_aliases[account_id] = iam.list_account_aliases()[
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"AccountAliases"
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][0]
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source['account_alias'] = account_aliases[account_id]
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source["account_alias"] = account_aliases[account_id]
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||||
except(KeyError, IndexError):
|
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logger.warning("Could not resolve IAM account alias")
|
||||
except (botocore.exceptions.ConnectTimeoutError, KeyError, IndexError):
|
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logger.warning(
|
||||
"Could not resolve IAM account alias, disabled for this session"
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||||
)
|
||||
RESOLVE_ACCOUNT = False
|
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pass
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||||
return source
|
||||
|
||||
|
||||
class Queue:
|
||||
url = urllib.parse.urlsplit(os.getenv('FLUENTD_URL', default=''), scheme='https')
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passwd = os.getenv('FLUENT_SHARED_KEY', default=None)
|
||||
def add_flow_metadata(flow):
|
||||
"""adds metadata to VPC flow: ENI, direction, type
|
||||
caches the ENI and IP lookup tables for Lambda lifetime
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"""
|
||||
global ENHANCE_FLOWLOG
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if ENHANCE_FLOWLOG and not TEST:
|
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try:
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# Check cache and update if missed with all ENIs in one go
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||||
if flow["interface-id"] not in enis:
|
||||
boto3_config = botocore.config.Config(
|
||||
retries=dict(max_attempts=2), connect_timeout=3, read_timeout=5
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)
|
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ec2 = boto3.client("ec2", config=boto3_config)
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||||
interface_iter = ec2.get_paginator(
|
||||
"describe_network_interfaces"
|
||||
).paginate()
|
||||
for response in interface_iter:
|
||||
for interface in response["NetworkInterfaces"]:
|
||||
# Lookup table by ENI ID
|
||||
enis[interface["NetworkInterfaceId"]] = interface
|
||||
|
||||
verify_certs = os.getenv('FLUENTD_VERIFY_CERTS', default=1)
|
||||
if verify_certs in ('f', 'F', 'false', 'False', 'FALSE', '0', 0, False):
|
||||
# Lookup table by IP to classify traffic
|
||||
ips[interface["PrivateIpAddress"]] = interface
|
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except (botocore.exceptions.ConnectTimeoutError, KeyError, IndexError):
|
||||
logger.warning(
|
||||
"Error trying to get metadata for ENIs, disabling ENHANCE_FLOWLOG"
|
||||
)
|
||||
ENHANCE_FLOWLOG = False
|
||||
return flow
|
||||
|
||||
try:
|
||||
eni = enis[flow["interface-id"]]
|
||||
metadata = {
|
||||
"eni.az": eni["AvailabilityZone"],
|
||||
"eni.subnet": eni["SubnetId"],
|
||||
}
|
||||
remote_ip = None
|
||||
if len(eni["Groups"]):
|
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metadata["eni.sg"] = eni["Groups"][0]["GroupName"]
|
||||
|
||||
# Add PublicIP if attached
|
||||
if "Association" in eni and "PublicIp" in eni["Association"]:
|
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metadata["eni.public_ip"] = eni["Association"]["PublicIp"]
|
||||
|
||||
# Determine traffic direction
|
||||
if eni["PrivateIpAddress"] == flow["srcaddr"]:
|
||||
metadata["direction"] = "Out"
|
||||
remote_ip = flow["dstaddr"]
|
||||
elif eni["PrivateIpAddress"] == flow["dstaddr"]:
|
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metadata["direction"] = "In"
|
||||
remote_ip = flow["srcaddr"]
|
||||
|
||||
# Try to classify traffic:
|
||||
# Free,Regional,Out
|
||||
if remote_ip:
|
||||
if remote_ip in ips:
|
||||
if (
|
||||
ips[remote_ip]["AvailabilityZone"] == eni["AvailabilityZone"]
|
||||
and ips[remote_ip]["VpcId"] == eni["VpcId"]
|
||||
):
|
||||
metadata["traffic_class"] = "Free"
|
||||
else:
|
||||
metadata["traffic_class"] = "Regional"
|
||||
else:
|
||||
# Incoming traffic is free 90% of times
|
||||
if metadata["direction"] == "In":
|
||||
metadata["traffic_class"] = "Free"
|
||||
else:
|
||||
metadata["traffic_class"] = "Out"
|
||||
|
||||
flow.update(metadata)
|
||||
|
||||
except (KeyError, IndexError) as e:
|
||||
logger.warning(
|
||||
"Could not get additional data for ENI {} ({})".format(
|
||||
flow["interface-id"], e
|
||||
)
|
||||
)
|
||||
pass
|
||||
|
||||
return flow
|
||||
|
||||
|
||||
class Queue:
|
||||
url = urllib.parse.urlsplit(os.getenv("FLUENTD_URL", default=""), scheme="https")
|
||||
passwd = os.getenv("FLUENT_SHARED_KEY", default=None)
|
||||
|
||||
verify_certs = os.getenv("FLUENTD_VERIFY_CERTS", default=1)
|
||||
if verify_certs in ("f", "F", "false", "False", "FALSE", "0", 0, False):
|
||||
verify_certs = False
|
||||
else:
|
||||
verify_certs = True
|
||||
|
@ -126,15 +226,24 @@ class Queue:
|
|||
if not events:
|
||||
return
|
||||
|
||||
logger.debug("Sending {} events to {}/{} ({})".format(events, self.url.geturl(), self.tag, self.request))
|
||||
logger.debug(
|
||||
"Sending {} events to {}/{} ({})".format(
|
||||
events, self.url.geturl(), self.tag, self.request
|
||||
)
|
||||
)
|
||||
|
||||
if not TEST:
|
||||
# Send events via POSTs reusing the same https connection, retry couple of times
|
||||
retries = 0
|
||||
_url = '{}/{}'.format(self.url.geturl(), self.tag)
|
||||
_url = "{}/{}".format(self.url.geturl(), self.tag)
|
||||
while True:
|
||||
try:
|
||||
r = self.request.post(url=_url, data=msgpack.packb(self._queue), verify=self.verify_certs)
|
||||
r = self.request.post(
|
||||
url=_url,
|
||||
data=msgpack.packb(self._queue),
|
||||
verify=self.verify_certs,
|
||||
timeout=(6, 30),
|
||||
)
|
||||
if r:
|
||||
break
|
||||
else:
|
||||
|
@ -144,12 +253,13 @@ class Queue:
|
|||
logger.warning("RequestException: {}".format(e))
|
||||
pass
|
||||
|
||||
if retries >= 8:
|
||||
raise Exception("Error sending {} events to {}. Giving up.".format(events, _url))
|
||||
if retries >= 2:
|
||||
raise Exception(
|
||||
"Error sending {} events to {}. Giving up.".format(events, _url)
|
||||
)
|
||||
|
||||
retries = retries + 1
|
||||
logger.warning("Error sending {} events to {}. Retrying in {} seconds.".format(events, _url, retries**2))
|
||||
time.sleep(retries**2)
|
||||
time.sleep(1)
|
||||
else:
|
||||
logger.debug("Test mode, dump only: {}".format(msgpack.packb(self._queue)))
|
||||
|
||||
|
@ -157,7 +267,11 @@ class Queue:
|
|||
self._queue = []
|
||||
|
||||
def info(self):
|
||||
logger.info("Sent {} events to {}/{} ({})".format(self.sent, self.url.geturl(), self.tag, self.request))
|
||||
logger.info(
|
||||
"Sent {} events to {}/{} ({})".format(
|
||||
self.sent, self.url.geturl(), self.tag, self.request
|
||||
)
|
||||
)
|
||||
|
||||
|
||||
# Handler to handle CloudWatch logs.
|
||||
|
@ -167,131 +281,171 @@ def handler(event, context):
|
|||
(region, account_id) = context.invoked_function_arn.split(":")[3:5]
|
||||
|
||||
# Cloudwatch Logs event
|
||||
if 'awslogs' in event:
|
||||
if "awslogs" in event:
|
||||
# Grab the base64-encoded data.
|
||||
b64strg = event['awslogs']['data']
|
||||
b64strg = event["awslogs"]["data"]
|
||||
|
||||
# Decode base64-encoded string, which should be a gzipped object.
|
||||
zippedContent = io.BytesIO(base64.b64decode(b64strg))
|
||||
|
||||
# Decompress the content and load JSON.
|
||||
with gzip.GzipFile(mode='rb', fileobj=zippedContent) as content:
|
||||
with gzip.GzipFile(mode="rb", fileobj=zippedContent) as content:
|
||||
for line in content:
|
||||
awsLogsData = json.loads(line.decode())
|
||||
|
||||
# First determine type
|
||||
if re.match("/aws/lambda/", awsLogsData['logGroup']):
|
||||
if re.match("/aws/lambda/", awsLogsData["logGroup"]):
|
||||
logs = Queue("aws.lambda")
|
||||
elif re.search("cloudtrail", awsLogsData['logGroup'], flags=re.IGNORECASE):
|
||||
elif re.search("cloudtrail", awsLogsData["logGroup"], flags=re.IGNORECASE):
|
||||
logs = Queue("aws.cloudtrail")
|
||||
elif re.match("RDSOSMetrics", awsLogsData['logGroup']):
|
||||
elif re.match("RDSOSMetrics", awsLogsData["logGroup"]):
|
||||
logs = Queue("aws.rdsosmetrics")
|
||||
elif re.match("vpcflowlog", awsLogsData["logGroup"], flags=re.IGNORECASE):
|
||||
logs = Queue("aws.vpcflowlog")
|
||||
else:
|
||||
logs = Queue("aws.cloudwatch_logs")
|
||||
|
||||
# Build list of log events
|
||||
for e in awsLogsData['logEvents']:
|
||||
for e in awsLogsData["logEvents"]:
|
||||
event = {}
|
||||
source = get_source(region, account_id)
|
||||
parsed = {}
|
||||
|
||||
# Remove whitespace / empty events & skip over empty events
|
||||
e['message'] = e['message'].strip()
|
||||
if re.match(r'^\s*$', e['message']):
|
||||
e["message"] = e["message"].strip()
|
||||
if re.match(r"^\s*$", e["message"]):
|
||||
continue
|
||||
|
||||
# inject existing data from subscrition filters
|
||||
if('extractedFields' in e.keys()):
|
||||
for key in e['extractedFields']:
|
||||
event[key] = e['extractedFields'][key]
|
||||
if "extractedFields" in e.keys():
|
||||
for key in e["extractedFields"]:
|
||||
event[key] = e["extractedFields"][key]
|
||||
|
||||
# lambda ?
|
||||
if logs.tag == 'aws.lambda':
|
||||
if logs.tag == "aws.lambda":
|
||||
# First look for the three AWS Lambda entries
|
||||
mg = re.match(r'(?P<type>(START|END|REPORT)) RequestId: (?P<request>\S*)', e['message'])
|
||||
mg = re.match(
|
||||
r"(?P<type>(START|END|REPORT)) RequestId: (?P<request>\S*)",
|
||||
e["message"],
|
||||
)
|
||||
if mg:
|
||||
parsed['RequestId'] = mg.group('request')
|
||||
if mg.group('type') == 'REPORT':
|
||||
pattern = r'.*(?:\tDuration: (?P<duration>[\d\.\d]+) ms\s*)(?:\tBilled Duration: (?P<billed_duration>[\d\.\d]+) ms\s*)(?:\tMemory Size: (?P<memory_size>[\d\.\d]+) MB\s*)(?:\tMax Memory Used: (?P<max_memory_used>[\d\.\d]+) MB)'
|
||||
parsed["RequestId"] = mg.group("request")
|
||||
if mg.group("type") == "REPORT":
|
||||
pattern = r".*(?:\tDuration: (?P<duration>[\d\.\d]+) ms\s*)(?:\tBilled Duration: (?P<billed_duration>[\d\.\d]+) ms\s*)(?:\tMemory Size: (?P<memory_size>[\d\.\d]+) MB\s*)(?:\tMax Memory Used: (?P<max_memory_used>[\d\.\d]+) MB)(?:\tInit Duration: (?P<init_duration>[\d\.\d]+) ms\s*)?"
|
||||
|
||||
elif mg.group('type') == 'START':
|
||||
pattern = r'.*(?:Version: (?P<version>.*))'
|
||||
elif mg.group("type") == "START":
|
||||
pattern = r".*(?:Version: (?P<version>.*))"
|
||||
|
||||
else:
|
||||
pattern = ''
|
||||
pattern = ""
|
||||
|
||||
data = re.match(pattern, e['message'])
|
||||
data = re.match(pattern, e["message"])
|
||||
for key in data.groupdict().keys():
|
||||
parsed[key] = data.group(key)
|
||||
if data.group(key):
|
||||
parsed[key] = data.group(key)
|
||||
|
||||
# All other info parsed, so just set type itself
|
||||
event['message'] = mg.group('type')
|
||||
event["message"] = mg.group("type")
|
||||
|
||||
else:
|
||||
# Try to extract data from AWS default python logging format
|
||||
# This normalizes print vs. logging entries and allows requestid tracking
|
||||
# "[%(levelname)s]\t%(asctime)s.%(msecs)dZ\t%(aws_request_id)s\t%(message)s\n"
|
||||
_msg = e['message']
|
||||
pattern = r'(?:\[(?P<level>[^\]]*)\]\s)?(?P<time>\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{1,6}Z)\s(?P<RequestId>\S*?)\s(?P<message>.*)'
|
||||
data = re.match(pattern, e['message'], flags=re.DOTALL)
|
||||
_msg = e["message"]
|
||||
pattern = r"(?:\[(?P<level>[^\]]*)\]\s)?(?P<time>\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{1,6}Z)\s(?P<RequestId>\S*?)\s(?P<message>.*)"
|
||||
data = re.match(pattern, e["message"], flags=re.DOTALL)
|
||||
if data:
|
||||
if data.group('level'):
|
||||
event['level'] = data.group('level')
|
||||
event['time'] = fluentd_time(datetime.datetime.strptime(data.group('time'), '%Y-%m-%dT%H:%M:%S.%fZ').timestamp())
|
||||
parsed['RequestId'] = data.group('RequestId')
|
||||
_msg = data.group('message')
|
||||
if data.group("level"):
|
||||
event["level"] = data.group("level")
|
||||
event["time"] = fluentd_time(
|
||||
datetime.datetime.strptime(
|
||||
data.group("time"), "%Y-%m-%dT%H:%M:%S.%fZ"
|
||||
).timestamp()
|
||||
)
|
||||
parsed["RequestId"] = data.group("RequestId")
|
||||
_msg = data.group("message")
|
||||
|
||||
# try to parse the remaining as json
|
||||
try:
|
||||
_json = json.loads(_msg)
|
||||
# Make sure we have an actual object assigned to json field
|
||||
if isinstance(_json, dict):
|
||||
event['message_json'] = _json
|
||||
event["message_json"] = _json
|
||||
else:
|
||||
event['message'] = _json
|
||||
event["message"] = _json
|
||||
except (ValueError, TypeError, KeyError):
|
||||
event['message'] = _msg
|
||||
event["message"] = _msg
|
||||
|
||||
# cloudtrail ?
|
||||
elif logs.tag == 'aws.cloudtrail':
|
||||
elif logs.tag == "aws.cloudtrail":
|
||||
try:
|
||||
parsed = json.loads(e['message'])
|
||||
parsed = json.loads(e["message"])
|
||||
|
||||
# use eventTime and eventID from the event itself
|
||||
event['time'] = fluentd_time(datetime.datetime.strptime(parsed['eventTime'], '%Y-%m-%dT%H:%M:%SZ').timestamp())
|
||||
event['id'] = parsed['eventID']
|
||||
event["time"] = fluentd_time(
|
||||
datetime.datetime.strptime(
|
||||
parsed["eventTime"], "%Y-%m-%dT%H:%M:%SZ"
|
||||
).timestamp()
|
||||
)
|
||||
event["id"] = parsed["eventID"]
|
||||
# override region from cloudtrail event
|
||||
source['region'] = parsed['awsRegion']
|
||||
source["region"] = parsed["awsRegion"]
|
||||
|
||||
except (ValueError, TypeError, KeyError):
|
||||
event['message'] = e['message']
|
||||
event["message"] = e["message"]
|
||||
parsed.clear()
|
||||
|
||||
# RDS metrics ?
|
||||
elif logs.tag == 'aws.rdsosmetrics':
|
||||
elif logs.tag == "aws.rdsosmetrics":
|
||||
try:
|
||||
parsed = json.loads(e['message'])
|
||||
parsed = json.loads(e["message"])
|
||||
|
||||
except (ValueError, TypeError, KeyError):
|
||||
event['message'] = e['message']
|
||||
event["message"] = e["message"]
|
||||
|
||||
# VPC FlowLog ?
|
||||
# <version> <account-id> <interface-id> <srcaddr> <dstaddr> <srcport> <dstport> <protocol> <packets> <bytes> <start> <end> <action> <log-status>
|
||||
elif logs.tag == "aws.vpcflowlog":
|
||||
row = e["message"].split(" ")
|
||||
|
||||
# Skip over NODATA,SKIPDATA entries, what would be the point having these in ES ?
|
||||
if row[13] != "OK":
|
||||
continue
|
||||
|
||||
parsed = add_flow_metadata(
|
||||
{
|
||||
"interface-id": row[2],
|
||||
"srcaddr": row[3],
|
||||
"dstaddr": row[4],
|
||||
"srcport": row[5],
|
||||
"dstport": row[6],
|
||||
"protocol": row[7],
|
||||
"packets": row[8],
|
||||
"bytes": row[9],
|
||||
"start": row[10],
|
||||
"end": row[11],
|
||||
"action": row[12],
|
||||
"log-status": row[13],
|
||||
}
|
||||
)
|
||||
|
||||
# Fallback add raw message
|
||||
else:
|
||||
event['message'] = e['message']
|
||||
event["message"] = e["message"]
|
||||
|
||||
if parsed and logs.tag:
|
||||
event[logs.tag] = parsed
|
||||
|
||||
# Forward cloudwatch logs event ID
|
||||
source['log_group'] = awsLogsData['logGroup']
|
||||
source['log_stream'] = awsLogsData['logStream']
|
||||
event['source'] = source
|
||||
source["log_group"] = awsLogsData["logGroup"]
|
||||
source["log_stream"] = awsLogsData["logStream"]
|
||||
event["source"] = source
|
||||
|
||||
# If time and id are not set yet use data from cloudwatch logs event
|
||||
if 'time' not in event:
|
||||
event['time'] = fluentd_time(e['timestamp'] / 1000)
|
||||
if 'id' not in source:
|
||||
event['id'] = e['id']
|
||||
if "time" not in event:
|
||||
event["time"] = fluentd_time(e["timestamp"] / 1000)
|
||||
if "id" not in source:
|
||||
event["id"] = e["id"]
|
||||
|
||||
logs.send(event)
|
||||
|
||||
|
@ -299,24 +453,26 @@ def handler(event, context):
|
|||
logs.info()
|
||||
|
||||
# S3 Put event
|
||||
elif 'Records' in event:
|
||||
s3_client = boto3.client('s3')
|
||||
elif "Records" in event:
|
||||
s3_client = boto3.client("s3")
|
||||
|
||||
bucket = event['Records'][0]['s3']['bucket']['name']
|
||||
key = event['Records'][0]['s3']['object']['key']
|
||||
bucket = event["Records"][0]["s3"]["bucket"]["name"]
|
||||
key = event["Records"][0]["s3"]["object"]["key"]
|
||||
|
||||
file_path = '/tmp/stream2fluentd.gz'
|
||||
file_path = "/tmp/stream2fluentd.gz"
|
||||
if TEST:
|
||||
shutil.copyfile(key, file_path)
|
||||
else:
|
||||
s3_client.download_file(bucket, key, file_path)
|
||||
source = get_source(region, account_id)
|
||||
source['s3_url'] = '{}/{}'.format(bucket, key)
|
||||
source["s3_url"] = "{}/{}".format(bucket, key)
|
||||
|
||||
alb_regex = re.compile(r"(?P<type>[^ ]*) (?P<timestamp>[^ ]*) (?P<elb>[^ ]*) (?P<client_ip>[^ ]*):(?P<client_port>[0-9]*) (?P<target_ip>[^ ]*)[:-](?P<target_port>[0-9]*) (?P<request_processing_time>[-.0-9]*) (?P<target_processing_time>[-.0-9]*) (?P<response_processing_time>[-.0-9]*) (?P<elb_status_code>|[-0-9]*) (?P<target_status_code>-|[-0-9]*) (?P<received_bytes>[-0-9]*) (?P<sent_bytes>[-0-9]*) \"(?P<request_verb>[^ ]*) (?P<request_url>[^ ]*) (?P<request_proto>- |[^ ]*)\" \"(?P<user_agent>[^\"]*)\" (?P<ssl_cipher>[A-Z0-9-]+) (?P<ssl_protocol>[A-Za-z0-9.-]*) (?P<target_group_arn>[^ ]*) \"(?P<trace_id>[^\"]*)\" \"(?P<domain_name>[^\"]*)\" \"(?P<chosen_cert_arn>[^\"]*)\" (?P<matched_rule_priority>[-.0-9]*) (?P<request_creation_time>[^ ]*) \"(?P<actions_executed>[^\"]*)\" \"(?P<redirect_url>[^ ]*)\" \"(?P<error_reason>[^ ]*)\"")
|
||||
alb_regex = re.compile(
|
||||
r"(?P<type>[^ ]*) (?P<timestamp>[^ ]*) (?P<elb>[^ ]*) (?P<client_ip>[^ ]*):(?P<client_port>[0-9]*) (?P<target_ip>[^ ]*)[:-](?P<target_port>[0-9]*) (?P<request_processing_time>[-.0-9]*) (?P<target_processing_time>[-.0-9]*) (?P<response_processing_time>[-.0-9]*) (?P<elb_status_code>|[-0-9]*) (?P<target_status_code>-|[-0-9]*) (?P<received_bytes>[-0-9]*) (?P<sent_bytes>[-0-9]*) \"(?P<request_verb>[^ ]*) (?P<request_url>[^\"]*) (?P<request_proto>- |[^ ]*)\" \"(?P<user_agent>[^\"]*)\" (?P<ssl_cipher>[A-Z0-9-]+) (?P<ssl_protocol>[A-Za-z0-9.-]*) (?P<target_group_arn>[^ ]*) \"(?P<trace_id>[^\"]*)\" \"(?P<domain_name>[^\"]*)\" \"(?P<chosen_cert_arn>[^\"]*)\" (?P<matched_rule_priority>[-.0-9]*) (?P<request_creation_time>[^ ]*) \"(?P<actions_executed>[^\"]*)\" \"(?P<redirect_url>[^ ]*)\" \"(?P<error_reason>[^ ]*)\""
|
||||
)
|
||||
|
||||
# try to identify file type by looking at first lines
|
||||
with gzip.open(file_path, mode='rt', newline='\n') as data:
|
||||
with gzip.open(file_path, mode="rt", newline="\n") as data:
|
||||
header = data.readlines(2048)
|
||||
|
||||
# ALB Access ?
|
||||
|
@ -324,15 +480,19 @@ def handler(event, context):
|
|||
logs = Queue("aws.alb_accesslog")
|
||||
|
||||
# cloudfront access logs
|
||||
elif len(header) > 1 and re.match('#Version:', header[0]) and re.match('#Fields:', header[1]):
|
||||
elif (
|
||||
len(header) > 1
|
||||
and re.match("#Version:", header[0])
|
||||
and re.match("#Fields:", header[1])
|
||||
):
|
||||
logs = Queue("aws.cloudfront_accesslog")
|
||||
|
||||
else:
|
||||
logger.warning("{}/{}: Unknown type!".format(bucket, key))
|
||||
return
|
||||
|
||||
if logs.tag == 'aws.alb_accesslog':
|
||||
with gzip.open(file_path, mode='rt', newline='\n') as data:
|
||||
if logs.tag == "aws.alb_accesslog":
|
||||
with gzip.open(file_path, mode="rt", newline="\n") as data:
|
||||
for line in data:
|
||||
event = {}
|
||||
parsed = {}
|
||||
|
@ -342,29 +502,39 @@ def handler(event, context):
|
|||
value = data.group(key)
|
||||
|
||||
# Remove empty values
|
||||
if value in ['-', '-\n']:
|
||||
if value in ["-", "-\n"]:
|
||||
continue
|
||||
|
||||
# Remove times of requests timed out
|
||||
if key in ['request_processing_time', 'target_processing_time', 'response_processing_time'] and value in ['-1']:
|
||||
if key in [
|
||||
"request_processing_time",
|
||||
"target_processing_time",
|
||||
"response_processing_time",
|
||||
] and value in ["-1"]:
|
||||
continue
|
||||
|
||||
parsed[key] = data.group(key)
|
||||
else:
|
||||
logger.warning("Could not parse ALB access log entry: {}".format(line))
|
||||
logger.warning(
|
||||
"Could not parse ALB access log entry: {}".format(line)
|
||||
)
|
||||
continue
|
||||
|
||||
event['time'] = fluentd_time(datetime.datetime.strptime(parsed['request_creation_time'], '%Y-%m-%dT%H:%M:%S.%fZ').timestamp())
|
||||
event["time"] = fluentd_time(
|
||||
datetime.datetime.strptime(
|
||||
parsed["request_creation_time"], "%Y-%m-%dT%H:%M:%S.%fZ"
|
||||
).timestamp()
|
||||
)
|
||||
|
||||
# Copy to host to allow geoip upstream
|
||||
event['host'] = parsed['client_ip']
|
||||
event["host"] = parsed["client_ip"]
|
||||
event[logs.tag] = parsed
|
||||
event['source'] = source
|
||||
event["source"] = source
|
||||
|
||||
logs.send(event)
|
||||
|
||||
elif logs.tag == 'aws.cloudfront_accesslog':
|
||||
with gzip.open(file_path, mode='rt', newline='\n') as data:
|
||||
elif logs.tag == "aws.cloudfront_accesslog":
|
||||
with gzip.open(file_path, mode="rt", newline="\n") as data:
|
||||
next(data)
|
||||
# columns are in second line: first is #Fields, next two are merged into time later
|
||||
columns = next(data).split()[3:]
|
||||
|
@ -376,20 +546,24 @@ def handler(event, context):
|
|||
# Todo hash each line to create source['id']
|
||||
# source['id'] = md5.of.line matching ES ids
|
||||
|
||||
row = line.split('\t')
|
||||
row = line.split("\t")
|
||||
# cloudfront events are logged to the second only, date and time are seperate
|
||||
event['time'] = fluentd_time(datetime.datetime.strptime(row[0] + " " + row[1], '%Y-%m-%d %H:%M:%S').timestamp())
|
||||
event["time"] = fluentd_time(
|
||||
datetime.datetime.strptime(
|
||||
row[0] + " " + row[1], "%Y-%m-%d %H:%M:%S"
|
||||
).timestamp()
|
||||
)
|
||||
|
||||
for n, c in enumerate(columns, 2):
|
||||
value = row[n]
|
||||
if value not in ['-', '-\n']:
|
||||
if value not in ["-", "-\n"]:
|
||||
parsed[c] = row[n]
|
||||
# Copy c-ip to host to allow geoip upstream
|
||||
if c == 'c-ip':
|
||||
event['host'] = row[n]
|
||||
if c == "c-ip":
|
||||
event["host"] = row[n]
|
||||
|
||||
event[logs.tag] = parsed
|
||||
event['source'] = source
|
||||
event["source"] = source
|
||||
|
||||
logs.send(event)
|
||||
|
||||
|
|
|
@ -0,0 +1,16 @@
|
|||
{
|
||||
"messageType": "DATA_MESSAGE",
|
||||
"owner": "123456789012",
|
||||
"logGroup": "Cloudtrail/DefaultTrail",
|
||||
"logStream": "123456789012_CloudTrail_eu-central-1",
|
||||
"subscriptionFilters": [
|
||||
"CloudBender_Mgmt"
|
||||
],
|
||||
"logEvents": [
|
||||
{
|
||||
"id": "36010944938174877173576838392419674140970254593468989442",
|
||||
"timestamp": 1614786618904,
|
||||
"message": "{\"eventVersion\":\"1.08\",\"userIdentity\":{\"type\":\"AssumedRole\",\"principalId\":\"AROAIVUV7DYO7JM46FRLW:AutoScaling\",\"arn\":\"arn:aws:sts::123456789012:assumed-role/AWSServiceRoleForAutoScaling/AutoScaling\",\"accountId\":\"123456789012\",\"sessionContext\":{\"sessionIssuer\":{\"type\":\"Role\",\"principalId\":\"AROAIVUV7DYO7JM46FRLW\",\"arn\":\"arn:aws:iam::123456789012:role/aws-service-role/autoscaling.amazonaws.com/AWSServiceRoleForAutoScaling\",\"accountId\":\"123456789012\",\"userName\":\"AWSServiceRoleForAutoScaling\"},\"webIdFederationData\":{},\"attributes\":{\"mfaAuthenticated\":\"false\",\"creationDate\":\"2021-03-03T15:18:15Z\"}},\"invokedBy\":\"autoscaling.amazonaws.com\"},\"eventTime\":\"2021-03-03T15:38:23Z\",\"eventSource\":\"ec2.amazonaws.com\",\"eventName\":\"DescribeInstanceStatus\",\"awsRegion\":\"eu-central-1\",\"sourceIPAddress\":\"autoscaling.amazonaws.com\",\"userAgent\":\"autoscaling.amazonaws.com\",\"requestParameters\":{\"instancesSet\":{\"items\":[{\"instanceId\":\"i-0fc26d9df63c21276\"},{\"instanceId\":\"i-01f635f7dd4af7d03\"},{\"instanceId\":\"i-0f5e6610de3ceb673\"}]},\"filterSet\":{},\"includeAllInstances\":true},\"responseElements\":null,\"requestID\":\"d89cde42-9a72-421a-af6b-e642ca862055\",\"eventID\":\"1dc68ed9-6879-4874-a286-179604a26747\",\"readOnly\":true,\"eventType\":\"AwsApiCall\",\"managementEvent\":true,\"eventCategory\":\"Management\",\"recipientAccountId\":\"123456789012\"}"
|
||||
}
|
||||
]
|
||||
}
|
|
@ -26,7 +26,11 @@ logging.getLogger("index").setLevel(logging.DEBUG)
|
|||
|
||||
def test_parse():
|
||||
# Test Cloudwatch Logs
|
||||
event = json.loads('{"awslogs": {"data": "H4sICILSAl0AA3Rlc3QArVNdb9tGEHzvr7gSfWgB09z7vuObHDOuCpsqKAZoawnGkTy5RChSJY9N0iD/vSslLew2BlykLwSxu9idmZt5H+39NLl7X747+CiNLhfl4u4mW68XV1l0Fg1vej9imTIupNLGAmVY7ob7q3GYD9hJ3Jsp6dy+alwS/BTi3dzXoR36j2PrMHq3xzkG1CbAE8qT22+uF2W2LresrirHgVPhjagtOLPbWa00B23BUIkrprma6rE9HDe+bLvgxylKb6MX3TA3F75v/Hh3c78P0fZ0Lfvd9+E48D5qGzzKhWIMJAjJubVCAWgtlJLGaMmUEUpaC0IwARKPWsus5oIKgYdDi8IEt0eOVEomQQmOy8zZX4Lh+kVdD3Mf2iYlDwXa9NGHsy9DIJ+JoHiVkx9WF2SVk/L7IltcEiqAa4VfvCE4I7fhV3yBJj4hTYne/g/o1DPR3S7zl6vtJhzfPgYeU15SmwqdUnXOmP4FO05UNegq9sL6WNQUYsu9iiuEpAWvtdF6E9zhcN4Nrrn76DOyG4c9mXiaJBOv5vq1D8lD/R/7MKmHftfef5a2lpodoQOj1OJBJqnmilrKjZW4EJSmqAhVlINU/AnauMM+op0Vxar4m7c68dYpQCr5OQdA3sY606D1YwM7HgvXNLFzsIsVBTBm58EJ5F1k19linZHTvpRs+vnQuODJ6DvvJj8ln35Ii0F4m276cnS1r1z9mny7H6aAgzUGgtSu60jnpvDdvzWQQA1XqJwSRmlJgTF6RMHQEJYpqpg1EsCiKFZrgCc0MALgUTSuj278maBB82V+RRY5WebrcpG/yL4m2U/LEoufexIJDP3LjeRSCkXx+Q1DhdHOGAoNGijnWgqBdmQY1KdygnAePUmWX5LC/zbj4BLT+izbfTm6p3LyT3RF9uOqKP8zwHA5j+5ocZynhp5LRfbTJly0Xecb8qDJALBDNuHG74fxHVm3f3gs4/zNBRbdW/Kp8WryeNzqU/0owPbDV38Ce70icCIGAAA=" } }')
|
||||
event = json.loads('{"awslogs": {"data": "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" } }')
|
||||
index.handler(event, context)
|
||||
|
||||
# {"messageType":"DATA_MESSAGE","owner":"123456789012","logGroup":"vpcflowlog","logStream":"eni-123","subscriptionFilters":["CloudBender_Mgmt"],"logEvents":[{"id":"34622050453399460077466588752684659904424057309929734144","timestamp":1552506436228,"message":"2 747836459185 eni-033856bc201b3773b 10.10.0.227 10.3.9.111 443 52866 6 2 135 1563806853 1563806911 ACCEPT OK"},{"id":"34622050453399460077466588752684659904424057309929734144","timestamp":1552506436228,"message":"2 747836459185 eni-033856bc201b3773b 10.10.9.48 10.10.0.227 24224 17234 6 10 1947 1563827256 1563827316 ACCEPT OK"}]}
|
||||
event = json.loads('{"awslogs": {"data": "H4sIAHN1N10AA82R3UoDMRCF732KkOu6JPOXpHe1rr2QotDeiUh/Ylno7pbdrSLFd3eqFPQNhFwczkzOzMecbJ37frXLy49DtmN7O1lOXublYjGZlXZk2/cmd2p7QGIJMTkPau/b3axrjwetvB02r/v2XZ0ffzF0eVVrITfVtX5Ttz+u+01XHYaqbe6q/ZC73o6f7HTfHrc3udnm7mW+qwf7/B1QvuVmODecbLXVHCQBcOyIEVMicS4EEuEYA4NEEk7JEQE5DuhSghSQPJEOHiqFG1a17umZgZ0QalgcXaA1HkygEFGIk49szls7xMiy3oDzawwB18a7Qp8rAMJZY5EK770hQsMQRYwYMB7ZeBaMTiLjRSbtm0yn5ePSPNzbz9G/o0oFxT+AQABkfNCTK5d3xicKPzgQgOUi0ctvsufPqy8JYO/9TQIAAA==" } }')
|
||||
index.handler(event, context)
|
||||
|
||||
# Cloudfront Access Logs via S3
|
||||
|
@ -37,6 +41,10 @@ def test_parse():
|
|||
event = json.loads('{ "Records": [ { "eventVersion": "2.0", "eventTime": "1970-01-01T00:00:00.000Z", "requestParameters": { "sourceIPAddress": "127.0.0.1" }, "s3": { "configurationId": "testConfigRule", "object": { "eTag": "0123456789abcdef0123456789abcdef", "sequencer": "0A1B2C3D4E5F678901", "key": "tests/test_alb_accesslogs.gz", "size": 1024 }, "bucket": { "arn": "arn:aws:s3:::mybucket", "name": "file://", "ownerIdentity": { "principalId": "EXAMPLE" } }, "s3SchemaVersion": "1.0" }, "responseElements": { "x-amz-id-2": "EXAMPLE123/5678abcdefghijklambdaisawesome/mnopqrstuvwxyzABCDEFGH", "x-amz-request-id": "EXAMPLE123456789" }, "awsRegion": "us-east-1", "eventName": "ObjectCreated:Put", "userIdentity": { "principalId": "EXAMPLE" }, "eventSource": "aws:s3" } ] }')
|
||||
index.handler(event, context)
|
||||
|
||||
# cloudtrail incl. _keyed
|
||||
event = json.loads('{"awslogs": {"data": "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" } }')
|
||||
index.handler(event, context)
|
||||
|
||||
# unknown file
|
||||
event = json.loads('{ "Records": [ { "eventVersion": "2.0", "eventTime": "1970-01-01T00:00:00.000Z", "requestParameters": { "sourceIPAddress": "127.0.0.1" }, "s3": { "configurationId": "testConfigRule", "object": { "eTag": "0123456789abcdef0123456789abcdef", "sequencer": "0A1B2C3D4E5F678901", "key": "tests/test_s3_unknown.gz", "size": 1024 }, "bucket": { "arn": "arn:aws:s3:::mybucket", "name": "file://", "ownerIdentity": { "principalId": "EXAMPLE" } }, "s3SchemaVersion": "1.0" }, "responseElements": { "x-amz-id-2": "EXAMPLE123/5678abcdefghijklambdaisawesome/mnopqrstuvwxyzABCDEFGH", "x-amz-request-id": "EXAMPLE123456789" }, "awsRegion": "us-east-1", "eventName": "ObjectCreated:Put", "userIdentity": { "principalId": "EXAMPLE" }, "eventSource": "aws:s3" } ] }')
|
||||
index.handler(event, context)
|
||||
|
|
Loading…
Reference in New Issue