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Merged
merged 1 commit into from
May 20, 2024
Merged

refactor all handlers #55

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150 changes: 37 additions & 113 deletions src/app.py
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Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,12 @@
from model import PasteDataAware
from api_handler import ApiHandler
from dynamodb import DB
from lambda_handlers import get_pastes_handler
from lambda_handlers import (
get_pastes_handler,
get_handler,
options_handler,
post_handler,
)

logger = logging.getLogger()
logger.setLevel("INFO")
Expand Down Expand Up @@ -37,113 +42,6 @@ def _dynamodb_endpoint_by_os(os: str):
return "http://host.docker.internal:8000"


def get_handler(event, context, db: DB, is_web_browser: bool = False):
try:
id = event["queryStringParameters"]["id"]
paste = PasteDataAware(db=db, id=id)
content = paste.read()
except:
logger.error(f"GET-failed to retrieve requested paste-id {id}")
return {"statusCode": 404}

if is_web_browser:
response_html = """
<!DOCTYPE html>
<html>
<head>
<title>Saved Content</title>
<meta charset="UTF-8">
</head>
<body>
<pre>{}</pre>
</body>
</html>
""".format(
content
)
return {
"statusCode": 200,
"isBase64Encoded": paste.is_base64_encoded(content=content),
"headers": {
"Content-Type": "text/html; charset=utf-8",
"Access-Control-Allow-Origin": "*",
"Access-Control-Allow-Methods": "POST,GET,OPTIONS,DELETE",
"Access-Control-Allow-Headers": "Content-Type",
},
"body": response_html,
}

return {
"statusCode": 200,
"isBase64Encoded": False,
"headers": {
"content-type": "application/json",
"Access-Control-Allow-Origin": "*",
"Access-Control-Allow-Methods": "POST,GET,OPTIONS,DELETE",
"Access-Control-Allow-Headers": "Content-Type",
},
"body": json.dumps(content),
}


def post_handler(event, context, db: DB):
try:
# Extract the IP address from the event
client_ip = event["requestContext"]["identity"]["sourceIp"]
logger.info(f"POST-client IP address: {client_ip}")
except:
logger.warn(
"POST- client IP address not available at event['requestContext']['identity']['sourceIp']"
)

try:
content = json.loads(event["body"], strict=False)["content"]
except:
logger.warning(f'POST- unable to load content from event["body"])["content"]')
content = event["content"]

client_id = ""
try:
client_id = json.loads(event["body"], strict=False)["client_id"]
except:
client_id = client_ip

paste = PasteDataAware(
content=content, db=db, client_identifier=hash_value(client_id)
)

try:
id = paste.insert()
except Exception as e:
return {"statusCode": 500, "body": e.args[0]}

return {
"statusCode": 201,
"isBase64Encoded": False,
"headers": {
"Content-Type": "application/json",
"Access-Control-Allow-Origin": "*",
"Access-Control-Allow-Methods": "POST,GET,OPTIONS,DELETE",
"Access-Control-Allow-Headers": "Content-Type",
},
"body": json.dumps({"id": id}),
}


def options_handler(event, context):
return {
"statusCode": 200,
"isBase64Encoded": False,
"headers": {
"Content-Type": "application/json",
"Access-Control-Allow-Origin": "*",
"Access-Control-Allow-Methods": "POST,GET,OPTIONS,DELETE",
"Access-Control-Allow-Headers": "Content-Type",
},
"body": json.dumps({"message": "probably checking your OPTIONS"}),
}


def lambda_handler(event, context):
"""
lambda_handler
Expand Down Expand Up @@ -183,18 +81,44 @@ def lambda_handler(event, context):
client_id=hash_value(client_id),
)

id = event["queryStringParameters"]["id"]
paste = PasteDataAware(db=db, id=id)

if "/api" in path:
return get_handler(context=context, event=event, db=db)
return get_handler(paste=paste)

try:
user_agent = event.get("headers", {}).get("User-Agent", "")
is_web_browser = "Mozilla" in user_agent or "AppleWebKit" in user_agent
return get_handler(
context=context, event=event, db=db, is_web_browser=is_web_browser
)
return get_handler(paste=paste, is_web_browser=is_web_browser)
except Exception as e:
return get_handler(context=context, event=event, db=db)
elif method == "POST":
return post_handler(context=context, event=event, db=db)
try:
client_ip = event["requestContext"]["identity"]["sourceIp"]
logger.info(f"POST-client IP address: {client_ip}")
except:
logger.warn(
"POST- client IP address not available at event['requestContext']['identity']['sourceIp']"
)

try:
content = json.loads(event["body"], strict=False)["content"]
except:
logger.warning(
f'POST- unable to load content from event["body"])["content"]'
)
content = event["content"]

client_id = ""
try:
client_id = json.loads(event["body"], strict=False)["client_id"]
except:
client_id = client_ip

paste = PasteDataAware(
content=content, db=db, client_identifier=hash_value(client_id)
)
return post_handler(paste=paste)
else:
return options_handler(context=context, event=event)
80 changes: 80 additions & 0 deletions src/lambda_handlers.py
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,5 +1,85 @@
import json
from api_handler import ApiHandler
from model import PasteDataAware


def get_handler(paste: PasteDataAware, is_web_browser: bool = False):
try:
content = paste.read()
except:
return {"statusCode": 404}

if is_web_browser:
response_html = """
<!DOCTYPE html>
<html>
<head>
<title>Saved Content</title>
<meta charset="UTF-8">
</head>
<body>
<pre>{}</pre>
</body>
</html>
""".format(
content
)
return {
"statusCode": 200,
"isBase64Encoded": paste.is_base64_encoded(content=content),
"headers": {
"Content-Type": "text/html; charset=utf-8",
"Access-Control-Allow-Origin": "*",
"Access-Control-Allow-Methods": "POST,GET,OPTIONS,DELETE",
"Access-Control-Allow-Headers": "Content-Type",
},
"body": response_html,
}

return {
"statusCode": 200,
"isBase64Encoded": False,
"headers": {
"content-type": "application/json",
"Access-Control-Allow-Origin": "*",
"Access-Control-Allow-Methods": "POST,GET,OPTIONS,DELETE",
"Access-Control-Allow-Headers": "Content-Type",
},
"body": json.dumps(content),
}


def post_handler(paste: PasteDataAware):
try:
id = paste.insert()
except Exception as e:
return {"statusCode": 500, "body": e.args[0]}

return {
"statusCode": 201,
"isBase64Encoded": False,
"headers": {
"Content-Type": "application/json",
"Access-Control-Allow-Origin": "*",
"Access-Control-Allow-Methods": "POST,GET,OPTIONS,DELETE",
"Access-Control-Allow-Headers": "Content-Type",
},
"body": json.dumps({"id": id}),
}


def options_handler(event, context):
return {
"statusCode": 200,
"isBase64Encoded": False,
"headers": {
"Content-Type": "application/json",
"Access-Control-Allow-Origin": "*",
"Access-Control-Allow-Methods": "POST,GET,OPTIONS,DELETE",
"Access-Control-Allow-Headers": "Content-Type",
},
"body": json.dumps({"message": "probably checking your OPTIONS"}),
}


def get_pastes_handler(api_handler: ApiHandler, client_id: str):
Expand Down
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