Compile MIBs from web

Look up specific ASN.1 MIBs at configured Web sites, compile them into pysnmp form and save Python modules as plain-text files in a local directory.

Try to support both SMIv1 and SMIv2 flavors of SMI as well as popular deviations from official syntax found in the wild.

In this example we disable automatic dependency checking on MIB compilation using noDeps flag.

Also, we do not check if target file already exists thus MIB compilation occurs on every invocation.

from pysmi.reader import HttpReader
from pysmi.searcher import StubSearcher
from pysmi.writer import PyFileWriter
from pysmi.parser import SmiStarParser
from pysmi.codegen import PySnmpCodeGen
from pysmi.compiler import MibCompiler

inputMibs = ["IF-MIB", "IP-MIB"]
httpSources = [("mibs.pysnmp.com", 443, "/asn1/@mib@")]
dstDirectory = ".pysnmp-mibs"

# Initialize compiler infrastructure

mibCompiler = MibCompiler(SmiStarParser(), PySnmpCodeGen(), PyFileWriter(dstDirectory))

# search for source MIBs at Web sites
mibCompiler.addSources(HttpReader("https://mibs.pysnmp.com/asn1/@mib@"))

# never recompile MIBs with MACROs
mibCompiler.addSearchers(StubSearcher(*PySnmpCodeGen.baseMibs))

# run non-recursive MIB compilation
results = mibCompiler.compile(*inputMibs, **dict(noDeps=True))

print(f"Results: {', '.join(f'{x}:{results[x]}' for x in results)}")

Download script.