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models.py
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models.py
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import datetime
import typing
from enum import (
Enum,
auto,
)
from dataclasses_json import DataClassJsonMixin, config, dataclass_json
from dataclasses import dataclass, field
from http import cookies
class HttpType(Enum):
Grpc = "grpc"
Grpcs = "grpcs"
Http = "http"
Https = "https"
H2 = "h2"
WebSocket = "ws"
WebSocketSecure = "wss"
@dataclass(frozen=True)
class Host:
ip: str
port: int
@dataclass(frozen=True)
class HttpRequest:
method: str
url: str
path: str
query: dict
protocol: str
class LoadBalancerErrorReason(Enum):
AuthInvalidAWSALBAuthNonce = auto()
AuthInvalidCookie = auto()
AuthInvalidGrantError = auto()
AuthInvalidIdToken = auto()
AuthInvalidStateParam = auto()
AuthInvalidTokenResponse = auto()
AuthInvalidUserinfoResponse = auto()
AuthMissingCodeParam = auto()
AuthMissingHostHeader = auto()
AuthMissingStateParam = auto()
AuthTokenEpRequestFailed = auto()
AuthTokenEpRequestTimeout = auto()
AuthUnhandledException = auto()
AuthUserinfoEpRequestFailed = auto()
AuthUserinfoEpRequestTimeout = auto()
AuthUserinfoResponseSizeExceeded = auto()
LambdaAccessDenied = auto()
LambdaConnectionTimeout = auto()
LambdaEC2AccessDeniedException = auto()
LambdaEC2ThrottledException = auto()
LambdaEC2UnexpectedException = auto()
LambdaENILimitReachedException = auto()
LambdaInvalidResponse = auto()
LambdaInvalidRuntimeException = auto()
LambdaInvalidSecurityGroupIDException = auto()
LambdaInvalidSubnetIDException = auto()
LambdaInvalidZipFileException = auto()
LambdaKMSAccessDeniedException = auto()
LambdaKMSDisabledException = auto()
LambdaKMSInvalidStateException = auto()
LambdaKMSNotFoundException = auto()
LambdaRequestTooLarge = auto()
LambdaResourceNotFound = auto()
LambdaResponseTooLarge = auto()
LambdaServiceException = auto()
LambdaSubnetIPAddressLimitReachedException = auto()
LambdaThrottling = auto()
LambdaUnhandled = auto()
@dataclass(frozen=True)
class LogEntry(DataClassJsonMixin):
pass
@dataclass(frozen=True)
class ClassicLoadBalancerLogEntry(LogEntry):
timestamp: datetime.datetime
elb: str
client: Host
target: Host
request_processing_time: float
target_processing_time: float
response_processing_time: float
elb_status_code: int
target_status_code: int
received_bytes: int
sent_bytes: int
http_request: HttpRequest
user_agent: str
ssl_cipher: str
ssl_protocol: str
instance_id: typing.Optional[str] = None
@property
def client_ip(self):
if self.client:
return self.client.ip
@dataclass(frozen=True)
class LoadBalancerLogEntry(LogEntry):
type: HttpType
timestamp: datetime.datetime
elb: str
client: Host
target: typing.Optional[Host]
request_processing_time: float
target_processing_time: float
response_processing_time: float
elb_status_code: int
target_status_code: typing.Optional[int]
received_bytes: int
sent_bytes: int
http_request: HttpRequest
user_agent: typing.Optional[str]
ssl_cipher: typing.Optional[str]
ssl_protocol: typing.Optional[str]
target_group_arn: str
trace_id: str
domain_name: typing.Optional[str]
chosen_cert_arn: typing.Optional[str]
matched_rule_priority: int
request_creation_time: datetime.datetime
actions_executed: typing.List[str]
redirect_url: typing.Optional[str]
error_reason: typing.Optional[LoadBalancerErrorReason]
@dataclass(frozen=True)
class CloudFrontLogEntry(LogEntry):
date: datetime.date
time: datetime.time
@property
def timestamp(self):
return datetime.datetime.fromisoformat(
f"{self.date}T{self.time}",
).replace(tzinfo=datetime.timezone.utc)
@dataclass(frozen=True)
class CloudFrontWebDistributionLogEntry(CloudFrontLogEntry):
edge_location: str
sent_bytes: int
client_ip: str
http_method: str
host: str
uri_stem: str
status_code: int
referrer: str
user_agent: str
uri_query: typing.Optional[dict]
cookie: typing.Optional[cookies.SimpleCookie]
edge_result_type: str
edge_request_id: str
host_header: str
protocol: str
received_bytes: typing.Optional[int]
time_taken: float
forwarded_for: typing.Optional[str]
ssl_protocol: typing.Optional[str]
ssl_cipher: typing.Optional[str]
edge_response_result_type: str
protocol_version: str
fle_encrypted_fields: str = ""
@dataclass(frozen=True)
class CloudFrontRTMPDistributionLogEntry(CloudFrontLogEntry):
edge_location: str
client_ip: str
event: str
sent_bytes: int
status_code: str
client_id: str
uri_stem: str
uri_query: dict
referrer: str
page_url: str
user_agent: str
# Begin WAF
@dataclass_json
@dataclass(frozen=True)
class WafLogEntryNonTerminatingMatchingRules:
action: str
ruleId: str
@dataclass_json
@dataclass(frozen=True)
class WafLogEntryExcludedRules:
exclusionType: str
ruleId: str
@dataclass_json
@dataclass(frozen=True)
class WafLogEntryRuleGroup:
ruleGroupId: str
terminatingRule: typing.Optional[str]
nonTerminatingMatchingRules: typing.List[WafLogEntryNonTerminatingMatchingRules]
excludedRules: typing.List[WafLogEntryExcludedRules]
@dataclass_json
@dataclass(frozen=True)
class WafLogEntryRateGroup:
rateBasedRuleId: str
limitKey: str
maxRateAllowed: int
@dataclass_json
@dataclass(frozen=True)
class WafLogEntryNonTerminatingMatchingRule:
action: str
ruleId: str
@dataclass_json
@dataclass(frozen=True)
class WafLogEntryHttpRequestHeader:
name: str
value: str
@dataclass_json
@dataclass(frozen=True)
class WafLogEntryHttpRequest:
clientIp: str
country: str
headers: typing.List[WafLogEntryHttpRequestHeader]
uri: str
args: str
httpVersion: str
httpMethod: str
requestId: str
@dataclass_json
@dataclass(frozen=True)
class WafLogEntry(LogEntry):
timestamp: datetime.datetime = field(
metadata=config(
encoder=lambda t: datetime.datetime.timestamp(t) * 1000,
decoder=lambda t: datetime.datetime.utcfromtimestamp(t / 1000),
)
)
formatVersion: int
webaclId: str
terminatingRuleId: str
terminatingRuleType: str
action: str
httpSourceName: str
httpSourceId: str
httpRequest: WafLogEntryHttpRequest
ruleGroupList: typing.List[WafLogEntryRuleGroup] = field(default_factory=list)
rateBasedRuleList: typing.List[WafLogEntryRateGroup] = field(default_factory=list)
nonTerminatingMatchingRules: typing.List[
WafLogEntryNonTerminatingMatchingRule
] = field(default_factory=list)
@property
def client_ip(self):
return self.httpRequest.clientIp
class LogFormatType(str, Enum):
CSV = "CSV"
JSON = "JSON"
@dataclass
class LogFormat:
name: str
model: typing.Type[LogEntry]
type: LogFormatType
delimiter: typing.Optional[str] = None
def LogFormatCsv(**kwargs):
return LogFormat(type=LogFormatType.CSV, **kwargs)
def LogFormatJson(**kwargs):
return LogFormat(type=LogFormatType.JSON, **kwargs)
def LogFormatCsvSpaced(**kwargs):
return LogFormatCsv(delimiter=" ", **kwargs)
def LogFormatCsvTabbed(**kwargs):
return LogFormatCsv(delimiter="\t", **kwargs)
@dataclass
class LogType:
ClassicLoadBalancer: typing.ClassVar[LogFormat] = LogFormatCsvSpaced(
name="ClassicLoadBalancer",
model=ClassicLoadBalancerLogEntry,
)
LoadBalancer: typing.ClassVar[LogFormat] = LogFormatCsvSpaced(
name="LoadBalancer",
model=LoadBalancerLogEntry,
)
CloudFront: typing.ClassVar[LogFormat] = LogFormatCsvTabbed(
name="CloudFront",
model=CloudFrontWebDistributionLogEntry,
)
CloudFrontRTMP: typing.ClassVar[LogFormat] = LogFormatCsvTabbed(
name="CloudFrontRTMP",
model=CloudFrontRTMPDistributionLogEntry,
)
WAF: typing.ClassVar[LogFormat] = LogFormatJson(
name="WAF",
model=WafLogEntry,
)