Install with pip install avro-byte-counter
And run the following script.
from avro.io import *
import io
from avro_byte_counter.avro_byte_counter import AvroByteCounter
schema = avro.schema.parse("""{
"type": "record",
"name": "Person",
"fields": [
{"name": "userName", "type": "string"},
{"name": "favoriteNumber", "type": ["null", "long"], "default": null},
{"name": "interests", "type": {"type": "array", "items": "string"}}
]
}
""")
# Write bytes
writer = DatumWriter(schema)
bytes_writer = io.BytesIO()
writer.write(
{"userName": "Martin", "favoriteNumber": 1337, "interests": ["hacking", "daydreaming"]},
BinaryEncoder(bytes_writer)
)
# Count bytes per field
raw_bytes = bytes_writer.getvalue()
avro_byte_counter = AvroByteCounter(schema)
byte_count_per_field = avro_byte_counter.count_byte_per_field(raw_bytes)
print(byte_count_per_field)
For flamegraph compatible format, run:
from avro_byte_counter.utils import count_to_flamegraph_format
print(*count_to_flamegraph_format(byte_count_per_field), sep='\n')
You can combine the python file created in getting started
with the flamegraph.pl
script to generate a flamegraph.
curl https://raw.githubusercontent.com/brendangregg/FlameGraph/d9fcc272b6a08c3e3e5b7919040f0ab5f8952d65/flamegraph.pl # any version is fine
chmod +x flamegraph.pl
python run myscript.py | ./flamegraph.pl --countname bytes > profiles/flamegraph.svg
Some users might need to add some flags to the pip
command, such as --user
or --no-build-isolation
.
You can also try to install by cloning this repo and install with poetry
directly.
If you still have issues or identified ones, don't hesitate to open an issue or a PR and ping me on it.
I gladly take feedbacks you have regarding the API, the usefulness of the project or anything :)