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api_server.py
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api_server.py
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import os
import json
import falcon
from multi_classifier import MultiClassifier
from build_db import (
open_block_db,
get_blocks_per_client,
get_sync_status,
get_sync_gaps,
update_block_db,
get_validator_blocks,
get_blocks,
count_true_positives,
count_true_negatives,
count_false_positives,
count_false_negatives,
)
DATA_DIR = "./data/mainnet/training"
BLOCK_DB = os.environ.get("BLOCK_DB") or "./block_db.sqlite"
BN_URL = "http://localhost:5052"
SELF_URL = "http://localhost:8000"
DISABLE_CLASSIFIER = "DISABLE_CLASSIFIER" in os.environ
class Classify:
def __init__(self, classifier, block_db):
self.classifier = classifier
self.block_db = block_db
def on_post(self, req, resp):
try:
block_rewards = json.load(req.bounded_stream)
except json.decoder.JSONDecodeError as e:
resp.text = json.dumps({"error": f"invalid JSON: {e}"})
resp.code = falcon.HTTP_400
return
# Check required fields
for block_reward in block_rewards:
if (
"block_root" not in block_reward
or "attestation_rewards" not in block_reward
or "per_attestation_rewards" not in block_reward["attestation_rewards"]
):
resp.text = json.dumps({"error": "input JSON is not a block reward"})
resp.code = falcon.HTTP_400
return
update_block_db(self.block_db, self.classifier, block_rewards)
print(
f"Processed {len(block_rewards)} block{'' if block_rewards == [] else 's'}"
)
resp.text = "OK"
class BlocksPerClient:
def __init__(self, block_db):
self.block_db = block_db
def on_get(self, req, resp, start_epoch, end_epoch=None):
end_epoch = end_epoch or (start_epoch + 1)
start_slot = 32 * start_epoch
end_slot = 32 * end_epoch
blocks_per_client = get_blocks_per_client(self.block_db, start_slot, end_slot)
resp.text = json.dumps(blocks_per_client, ensure_ascii=False)
class SyncStatus:
def __init__(self, block_db):
self.block_db = block_db
def on_get(self, req, resp):
sync_status = get_sync_status(self.block_db)
resp.text = json.dumps(sync_status, ensure_ascii=False)
class SyncGaps:
def __init__(self, block_db):
self.block_db = block_db
def on_get(self, req, resp):
gaps = get_sync_gaps(self.block_db)
resp.text = json.dumps(gaps, ensure_ascii=False)
class ValidatorBlocks:
def __init__(self, block_db):
self.block_db = block_db
def on_get(self, req, resp, validator_index, since_slot=None):
validator_blocks = get_validator_blocks(
self.block_db, validator_index, since_slot
)
resp.text = json.dumps(validator_blocks, ensure_ascii=False)
class MultipleValidatorsBlocks:
def __init__(self, block_db):
self.block_db = block_db
def on_post(self, req, resp, since_slot=None):
# Validate request.
try:
validator_indices = json.load(req.bounded_stream)
except json.decoder.JSONDecodeError as e:
resp.text = json.dumps({"error": f"invalid JSON: {e}"})
resp.code = falcon.HTTP_400
return
# I love type checking.
if type(validator_indices) != list or any(
type(x) != int for x in validator_indices
):
resp.text = json.dumps({"error": "request must be a list of integers"})
resp.code = falcon.HTTP_400
return
all_blocks = {}
for validator_index in validator_indices:
validator_blocks = get_validator_blocks(
self.block_db, validator_index, since_slot
)
all_blocks[validator_index] = validator_blocks
resp.text = json.dumps(all_blocks, ensure_ascii=False)
class Blocks:
def __init__(self, block_db):
self.block_db = block_db
def on_get(self, req, resp, start_slot, end_slot=None):
blocks = get_blocks(self.block_db, start_slot, end_slot)
resp.text = json.dumps(blocks, ensure_ascii=False)
class ConfusionMatrix:
def __init__(self, block_db):
self.block_db = block_db
def on_get(self, req, resp, client, start_slot, end_slot=None):
true_pos = count_true_positives(self.block_db, client, start_slot, end_slot)
true_neg = count_true_negatives(self.block_db, client, start_slot, end_slot)
false_pos = count_false_positives(self.block_db, client, start_slot, end_slot)
false_neg = count_false_negatives(self.block_db, client, start_slot, end_slot)
resp.text = json.dumps(
{
"true_pos": true_pos,
"true_neg": true_neg,
"false_pos": false_pos,
"false_neg": false_neg,
}
)
app = application = falcon.App()
classifier = None
if not DISABLE_CLASSIFIER:
print("Initialising classifier, this could take a moment...")
classifier = MultiClassifier(DATA_DIR) if not DISABLE_CLASSIFIER else None
print("Done")
block_db = open_block_db(BLOCK_DB)
app.add_route("/classify", Classify(classifier, block_db))
app.add_route(
"/blocks_per_client/{start_epoch:int}/{end_epoch:int}", BlocksPerClient(block_db)
)
app.add_route("/blocks_per_client/{start_epoch:int}", BlocksPerClient(block_db))
app.add_route("/validator/{validator_index:int}/blocks", ValidatorBlocks(block_db))
app.add_route(
"/validator/{validator_index:int}/blocks/{since_slot:int}",
ValidatorBlocks(block_db),
)
app.add_route("/validator/blocks", MultipleValidatorsBlocks(block_db))
app.add_route("/validator/blocks/{since_slot:int}", MultipleValidatorsBlocks(block_db))
app.add_route("/blocks/{start_slot:int}", Blocks(block_db))
app.add_route("/blocks/{start_slot:int}/{end_slot:int}", Blocks(block_db))
app.add_route("/sync/status", SyncStatus(block_db))
app.add_route("/sync/gaps", SyncGaps(block_db))
app.add_route(
"/confusion/{client}/{start_slot:int}/{end_slot:int}", ConfusionMatrix(block_db)
)
print("Up")