PICARD MERGESAMFILES

https://img.shields.io/github/issues-pr/snakemake/snakemake-wrappers/bio/picard/mergesamfiles?label=version%20update%20pull%20requests

Merge sam/bam files using picard tools.

Example

This wrapper can be used in the following way:

rule merge_bams:
    input:
        expand("mapped/{sample}.bam", sample=["a", "b"]),
    output:
        "merged.bam",
    log:
        "logs/picard_mergesamfiles.log",
    params:
        extra="--VALIDATION_STRINGENCY LENIENT",
    # optional specification of memory usage of the JVM that snakemake will respect with global
    # resource restrictions (https://snakemake.readthedocs.io/en/latest/snakefiles/rules.html#resources)
    # and which can be used to request RAM during cluster job submission as `{resources.mem_mb}`:
    # https://snakemake.readthedocs.io/en/latest/executing/cluster.html#job-properties
    resources:
        mem_mb=1024,
    wrapper:
        "v3.8.0-1-g149ef14/bio/picard/mergesamfiles"

Note that input, output and log file paths can be chosen freely.

When running with

snakemake --use-conda

the software dependencies will be automatically deployed into an isolated environment before execution.

Notes

  • The java_opts param allows for additional arguments to be passed to the java compiler, e.g. “-XX:ParallelGCThreads=10” (not for -XmX or -Djava.io.tmpdir, since they are handled automatically).

  • The extra param allows for additional program arguments.

  • –TMP_DIR is automatically set by resources.tmpdir

  • For more information see, https://broadinstitute.github.io/picard/command-line-overview.html#MergeSamFiles

Software dependencies

  • picard=3.1.1

  • snakemake-wrapper-utils=0.6.2

Input/Output

Input:

  • sam/bam files

Output:

  • merged sam/bam file

Authors

  • Julian de Ruiter

Code

"""Snakemake wrapper for picard MergeSamFiles."""

__author__ = "Julian de Ruiter"
__copyright__ = "Copyright 2017, Julian de Ruiter"
__email__ = "julianderuiter@gmail.com"
__license__ = "MIT"


import tempfile
from snakemake.shell import shell
from snakemake_wrapper_utils.java import get_java_opts

extra = snakemake.params.get("extra", "")
java_opts = get_java_opts(snakemake)

inputs = " ".join("--INPUT {}".format(in_) for in_ in snakemake.input)
log = snakemake.log_fmt_shell(stdout=False, stderr=True)

with tempfile.TemporaryDirectory() as tmpdir:
    shell(
        "picard  MergeSamFiles"
        " {java_opts} {extra}"
        " {inputs}"
        " --TMP_DIR {tmpdir}"
        " --OUTPUT {snakemake.output[0]}"
        " {log}"
    )