def add_metadata_to_lambda_log(event):
"""Mutate log dict to add functionname tag, host, and service from the existing Lambda attribute
If the event arg is not a Lambda log then this returns without doing anything
Args:
event (dict): the event we are adding Lambda metadata to
"""
lambda_log_metadata = event.get('lambda', {})
lambda_log_arn = lambda_log_metadata.get('arn')
# Do not mutate the event if it's not from Lambda
if not lambda_log_arn:
return
# Function name is the sixth piece of the ARN
function_name = lambda_log_arn.split(':')[6]
event[DD_HOST] = lambda_log_arn
event[DD_SERVICE] = function_name
tags = ['functionname:{}'.format(function_name)]
# Add any enhanced tags from metadata
if IS_ENHANCED_METRICS_FILE_PRESENT:
tags += get_enriched_lambda_log_tags(event)
# Dedup tags, so we don't end up with functionname twice
tags = list(set(tags))
event[DD_CUSTOM_TAGS] = ",".join([event[DD_CUSTOM_TAGS]] + tags)
def add_metadata_to_lambda_log(event):
"""Mutate log dict to add tags, host, and service metadata
* tags for functionname, aws_account, region
* host from the Lambda ARN
* service from the Lambda name
If the event arg is not a Lambda log then this returns without doing anything
Args:
event (dict): the event we are adding Lambda metadata to
"""
lambda_log_metadata = event.get("lambda", {})
lambda_log_arn = lambda_log_metadata.get("arn")
# Do not mutate the event if it's not from Lambda
if not lambda_log_arn:
return
# Set Lambda ARN to "host"
event[DD_HOST] = lambda_log_arn
# Function name is the seventh piece of the ARN
function_name = lambda_log_arn.split(":")[6]
tags = [f"functionname:{function_name}"]
# Get custom tags of the Lambda function
custom_lambda_tags = get_enriched_lambda_log_tags(event)
# Set the `service` tag and metadata field. If the Lambda function is
# tagged with a `service` tag, use it, otherwise use the function name.
service_tag = next(
(tag for tag in custom_lambda_tags if tag.startswith("service:")),
f"service:{function_name}",
)
tags.append(service_tag)
event[DD_SERVICE] = service_tag.split(":")[1]
# Check if one of the Lambda's custom tags is env
# If an env tag exists, remove the env:none placeholder
custom_env_tag = next(
(tag for tag in custom_lambda_tags if tag.startswith("env:")), None
)
if custom_env_tag is not None:
event[DD_CUSTOM_TAGS] = event[DD_CUSTOM_TAGS].replace("env:none", "")
tags += custom_lambda_tags
# Dedup tags, so we don't end up with functionname twice
tags = list(set(tags))
tags.sort() # Keep order deterministic
event[DD_CUSTOM_TAGS] = ",".join([event[DD_CUSTOM_TAGS]] + tags)
def add_metadata_to_lambda_log(event):
"""Mutate log dict to add tags, host, and service metadata
* tags for functionname, aws_account, region
* host from the Lambda ARN
* service from the Lambda name
If the event arg is not a Lambda log then this returns without doing anything
Args:
event (dict): the event we are adding Lambda metadata to
"""
lambda_log_metadata = event.get("lambda", {})
lambda_log_arn = lambda_log_metadata.get("arn")
# Do not mutate the event if it's not from Lambda
if not lambda_log_arn:
return
# Function name is the sixth piece of the ARN
function_name = lambda_log_arn.split(":")[6]
event[DD_HOST] = lambda_log_arn
event[DD_SERVICE] = function_name
tags = ["functionname:{}".format(function_name)]
# Add any enhanced tags from metadata
if IS_ENHANCED_METRICS_FILE_PRESENT:
custom_lambda_tags = get_enriched_lambda_log_tags(event)
# Check if one of the Lambda's custom tags is env
# If an env tag exists, remove the env:none placeholder
custom_env_tag = next(
(tag for tag in custom_lambda_tags if tag.startswith("env:")),
None)
if custom_env_tag is not None:
event[DD_CUSTOM_TAGS] = event[DD_CUSTOM_TAGS].replace(
"env:none", "")
tags += custom_lambda_tags
# Dedup tags, so we don't end up with functionname twice
tags = list(set(tags))
tags.sort() # Keep order deterministic
event[DD_CUSTOM_TAGS] = ",".join([event[DD_CUSTOM_TAGS]] + tags)
def add_metadata_to_lambda_log(event):
"""Mutate log dict to add tags, host, and service metadata
* tags for functionname, aws_account, region
* host from the Lambda ARN
* service from the Lambda name
If the event arg is not a Lambda log then this returns without doing anything
Args:
event (dict): the event we are adding Lambda metadata to
"""
lambda_log_metadata = event.get("lambda", {})
lambda_log_arn = lambda_log_metadata.get("arn")
# Do not mutate the event if it's not from Lambda
if not lambda_log_arn:
return
# Function name is the sixth piece of the ARN
function_name = lambda_log_arn.split(":")[6]
event[DD_HOST] = lambda_log_arn
event[DD_SERVICE] = function_name
tags = ["functionname:{}".format(function_name)]
# Add any enhanced tags from metadata
if IS_ENHANCED_METRICS_FILE_PRESENT:
tags += get_enriched_lambda_log_tags(event)
# Dedup tags, so we don't end up with functionname twice
tags = list(set(tags))
tags.sort() # Keep order deterministic
event[DD_CUSTOM_TAGS] = ",".join([event[DD_CUSTOM_TAGS]] + tags)
