Add module: bamaligncleaner (#676)

* Specify more guidelines on input channels

* Linting

* Updates based on code review

* Update README.md

* Fix broken sentence

* Add bamAlignCleaner module

* Add container tags

* Update modules/bamaligncleaner/main.nf

.nf-core.yml

@@ -7,4 +7,3 @@ bump-versions:
   rseqc/inferexperiment: False
   rseqc/innerdistance: False
   sortmerna: False
-  malt/build: False

modules/bamaligncleaner/functions.nf

@@ -0,0 +1,68 @@
+//
+//  Utility functions used in nf-core DSL2 module files
+//
+
+//
+// Extract name of software tool from process name using $task.process
+//
+def getSoftwareName(task_process) {
+    return task_process.tokenize(':')[-1].tokenize('_')[0].toLowerCase()
+}
+
+//
+// Function to initialise default values and to generate a Groovy Map of available options for nf-core modules
+//
+def initOptions(Map args) {
+    def Map options = [:]
+    options.args            = args.args ?: ''
+    options.args2           = args.args2 ?: ''
+    options.args3           = args.args3 ?: ''
+    options.publish_by_meta = args.publish_by_meta ?: []
+    options.publish_dir     = args.publish_dir ?: ''
+    options.publish_files   = args.publish_files
+    options.suffix          = args.suffix ?: ''
+    return options
+}
+
+//
+// Tidy up and join elements of a list to return a path string
+//
+def getPathFromList(path_list) {
+    def paths = path_list.findAll { item -> !item?.trim().isEmpty() }      // Remove empty entries
+    paths     = paths.collect { it.trim().replaceAll("^[/]+|[/]+\$", "") } // Trim whitespace and trailing slashes
+    return paths.join('/')
+}
+
+//
+// Function to save/publish module results
+//
+def saveFiles(Map args) {
+    if (!args.filename.endsWith('.version.txt')) {
+        def ioptions  = initOptions(args.options)
+        def path_list = [ ioptions.publish_dir ?: args.publish_dir ]
+        if (ioptions.publish_by_meta) {
+            def key_list = ioptions.publish_by_meta instanceof List ? ioptions.publish_by_meta : args.publish_by_meta
+            for (key in key_list) {
+                if (args.meta && key instanceof String) {
+                    def path = key
+                    if (args.meta.containsKey(key)) {
+                        path = args.meta[key] instanceof Boolean ? "${key}_${args.meta[key]}".toString() : args.meta[key]
+                    }
+                    path = path instanceof String ? path : ''
+                    path_list.add(path)
+                }
+            }
+        }
+        if (ioptions.publish_files instanceof Map) {
+            for (ext in ioptions.publish_files) {
+                if (args.filename.endsWith(ext.key)) {
+                    def ext_list = path_list.collect()
+                    ext_list.add(ext.value)
+                    return "${getPathFromList(ext_list)}/$args.filename"
+                }
+            }
+        } else if (ioptions.publish_files == null) {
+            return "${getPathFromList(path_list)}/$args.filename"
+        }
+    }
+}

modules/bamaligncleaner/main.nf

@@ -0,0 +1,40 @@
+// Import generic module functions
+include { initOptions; saveFiles; getSoftwareName } from './functions'
+
+params.options = [:]
+options        = initOptions(params.options)
+
+process BAMALIGNCLEANER {
+    tag "$meta.id"
+    label 'process_low'
+    publishDir "${params.outdir}",
+        mode: params.publish_dir_mode,
+        saveAs: { filename -> saveFiles(filename:filename, options:params.options, publish_dir:getSoftwareName(task.process), meta:meta, publish_by_meta:['id']) }
+
+    conda (params.enable_conda ? "bioconda::bamaligncleaner=0.2.1" : null)
+    if (workflow.containerEngine == 'singularity' && !params.singularity_pull_docker_container) {
+        container "https://depot.galaxyproject.org/singularity/bamaligncleaner:0.2.1--pyhdfd78af_0"
+    } else {
+        container "quay.io/biocontainers/bamaligncleaner:0.2.1--pyhdfd78af_0"
+    }
+
+    input:
+    tuple val(meta), path(bam)
+
+    output:
+    tuple val(meta), path("*.bam"), emit: bam
+    path "*.version.txt"          , emit: version
+
+    script:
+    def software = getSoftwareName(task.process)
+    def prefix   = options.suffix ? "${meta.id}${options.suffix}" : "${meta.id}"
+
+    """
+    bamAlignCleaner \\
+        $options.args \\
+        -o ${prefix}.bam \\
+        ${bam}
+
+    echo \$(bamAlignCleaner --version) | sed 's/.*version //' > ${software}.version.txt
+    """
+}

modules/bamaligncleaner/meta.yml

@@ -0,0 +1,40 @@
+name: bamaligncleaner
+description: removes unused references from header of sorted BAM/CRAM files.
+keywords:
+  - bam
+tools:
+  - bamaligncleaner:
+      description: Removes unaligned references in aligned BAM alignment file
+      homepage: https://github.com/maxibor/bamAlignCleaner
+      documentation: https://github.com/maxibor/bamAlignCleaner
+      tool_dev_url: https://github.com/maxibor/bamAlignCleaner
+      licence: ['GPL v3']
+
+input:
+  - meta:
+      type: map
+      description: |
+        Groovy Map containing sample information
+        e.g. [ id:'test', single_end:false ]
+  - bam:
+      type: file
+      description: BAM/CRAM file
+      pattern: "*.{bam,cram}"
+
+output:
+  - meta:
+      type: map
+      description: |
+        Groovy Map containing sample information
+        e.g. [ id:'test', single_end:false ]
+  - version:
+      type: file
+      description: File containing software version
+      pattern: "*.{version.txt}"
+  - bam:
+      type: file
+      description: Sorted BAM/CRAM file
+      pattern: "*.{bam,cram}"
+
+authors:
+  - "@jfy133"

tests/config/pytest_modules.yml

@@ -22,6 +22,10 @@ artic/minion:
   - modules/artic/minion/**
   - tests/modules/artic/minion/**
 
+bamaligncleaner:
+  - modules/bamaligncleaner/**
+  - tests/modules/bamaligncleaner/**
+
 bandage/image:
   - modules/bandage/image/**
   - tests/modules/bandage/image/**

tests/modules/bamaligncleaner/main.nf

@@ -0,0 +1,13 @@
+#!/usr/bin/env nextflow
+
+nextflow.enable.dsl = 2
+
+include { BAMALIGNCLEANER } from '../../../modules/bamaligncleaner/main.nf' addParams( options: [:] )
+
+workflow test_bamaligncleaner {
+
+    input = [ [ id:'test', single_end:false ], // meta map
+              file(params.test_data['sarscov2']['illumina']['test_single_end_sorted_bam'], checkIfExists: true) ]
+
+    BAMALIGNCLEANER ( input )
+}

tests/modules/bamaligncleaner/test.yml

@@ -0,0 +1,7 @@
+- name: bamaligncleaner
+  command: nextflow run ./tests/modules/bamaligncleaner -entry test_bamaligncleaner -c tests/config/nextflow.config
+  tags:
+    - bamaligncleaner
+  files:
+    - path: output/bamaligncleaner/test.bam
+      md5sum: 173cdb4c2713b77c528cac36ca2610fb