Packages

object Asn1Inspector

Lightweight diagnostic utility — decode the first few records from a local ASN.1 file without a SparkSession.

Typical use: paste into a notebook or sbt console to verify your options before submitting a full Spark job.

import io.github.sparkasn1.spark.asn1.util.Asn1Inspector
Asn1Inspector.peek(
  schemaPaths = Seq("/tmp/cdr.asn1"),
  typeName    = "PGWRecord",
  encoding    = "ber",
  filePath    = "/tmp/sample.ber"
)

Can also be run from the command line:

sbt "runMain io.github.sparkasn1.spark.asn1.util.Asn1Inspector \
  --schema cdr.asn1 --type PGWRecord --encoding ber --file sample.ber"
Source
Asn1Inspector.scala
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  15. def peek(schemaPaths: Seq[String], typeName: String, encoding: String = "ber", filePath: String, maxRecords: Int = 3, perFraming: String = "length-prefixed", perRecordBytes: Int = 0): String

    Decode up to maxRecords records from filePath and return a human-readable report string.

    Decode up to maxRecords records from filePath and return a human-readable report string. The report is also printed to stdout.

    schemaPaths

    paths to one or more .asn1 schema files

    typeName

    root ASN.1 type name to decode

    encoding

    one of: ber, der, per-aligned, per-unaligned, xer

    filePath

    local file path to read

    maxRecords

    maximum records to decode (default 3)

    perFraming

    PER framing mode: length-prefixed (default), fixed-length, hex-lines

    perRecordBytes

    record size for fixed-length PER framing

    returns

    the formatted report string

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