An opinionated python SNMPv2 library built for rapid database ingestion.
An opinionated python3.7 SNMPv2 package designed for rapid database ingestion. This package is a source distribution that includes a C module wrapping net-snmp. No MIB processing is done as part of this package. The C module copies raw results from net-snmp into numpy arrays for fast post-processing with either numpy or pandas. Other libraries that wrap net-snmp will typically return control to python between every PDU request-response. Snmp-fetch is designed to be thread-safe and efficient by walking multiple targets within the C module with the GIL released. Helper modules are provided to aid in the post-processing with MIB-like definitions for converting the raw data into usable DataFrames.
Snmp-fetch requires python 3.7, a c++17 compiler (currently only supports gcc-8), and cmake 3.12.4+. No other user installed dependencies should be required for building this package.
# poetry poetry add snmp-fetch --no-dev # pip pip install snmp-fetch
The examples use jupyter and the dependencies can be installed using the following:
git clone --recurse-submodules -j8 https://github.com/higherorderfunctor/snmp-fetch.git cd snmp_fetch virtualenv -p python3.7 ENV source ENV/bin/activate poetry install -E notebooks jupyter lab
Poetry is required for the development of snmp-fetch.
# clone the respository git clone --recurse-submodules -j8 https://github.com/higherorderfunctor/snmp-fetch.git cd snmp-fetch # if working off an existing clone, update the current branch git pull # pull the latest code git submodule update --init --recursive # pull the latest submodule version # setup the virtual environment - mypy uses symbolic links in the 'stubs' directory to # expose packages that play nicely with the static type checker virtualenv -p python3.7 ENV source ENV/bin/activate poetry install
# C++ headers are in the following folders for linters export CPLUS_INCLUDE_PATH="build/temp.linux-x86_64-3.7/include:lib/pybind11/include:lib/Catch2/single_include/catch2" # python linting poetry run isort -rc --atomic . poetry run pylint snmp_fetch tests poetry run flake8 snmp_fetch tests poetry run mypy -p snmp_fetch -p tests poetry run bandit -r snmp_fetch # C++ linting # TODO # python testing poetry run pytest -v --hypothesis-show-statistics tests # fail fast testing poetry run pytest -x --ff tests # C++ testing pushd build/temp.linux-x86_64-3.7/ cmake -DBUILD_TESTING=ON ../.. && make test_capi test popd
Changes between v0.1.x versions may introduce breaking changes.
The library only supports SNMPv2 at this time.
BULKGET_REQUEST and NEXT_REQUEST will always perform a walk.
Walks will always end if the root of the OID runs past the requested OID.
Duplicate objects on the same host/request will be silently discarded.
This includes the initial request; walks must be performed on an OID prior to the first desired.
NO_SUCH_INSTANCE, NO_SUCH_OBJECT, and END_OF_MIB_VIEW response variable bindings are exposed as errors for handling by the client.
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