#' @title Running bwa, Li and Durbin Bioinformatics, 2009 Jul 15;25(14):1754-60
#' @description This function executes the docker container bwa1 where BWA is installed BWA is a read alignment package that efficiently align short sequencing reads against a large reference sequence This aligner provides optimal results with DNA-seq data
#'
#' @param group, a character string. Two options: \code{"sudo"} or \code{"docker"}, depending to which group the user belongs
#' @param fastq.folder, a character string indicating where gzip fastq files are located
#' @param scratch.folder, a character string indicating the scratch folder where docker container will be mounted
#' @param genome.folder, a character string indicating the folder where the indexed reference genome for bwa is located
#' @param seq.type, a character string indicating the type of reads to be trimmed. Two options: \code{"se"} or \code{"pe"} respectively for single end and pair end sequencing
#' @param threads, a number indicating the number of cores to be used from the application
#' @param sample.id, a character string indicating the unique id to be associated to the bam that will be created
#' @param circRNA, a boolean variable indicating whether the analysis concerns a circRNA prediction or not.
#' @author Raffaele Calogero
#'
#' @return three files: dedup_reads.bam, which is sorted and duplicates marked bam file, dedup_reads.bai, which is the index of the dedup_reads.bam, and dedup_reads.stats, which provides mapping statistics
#' @examples
#'\dontrun{
#' #downloading fastq files
#' system("wget http://130.192.119.59/public/test_R1.fastq.gz")
#' #running bwa
#' bwa(group="docker",fastq.folder=getwd(), scratch.folder="/data/scratch",
#' genome.folder="/data/scratch/hg19bwa", seq.type="se",
#' threads=24, sample.id="exome")
#'
#' }
#' @export
bwa <- function(group=c("sudo","docker"),fastq.folder=getwd(), scratch.folder="/data/scratch", genome.folder, seq.type=c("se","pe"), threads=1, sample.id, circRNA=FALSE){
home <- getwd()
setwd(fastq.folder)
#initialize status
system("echo 0 > ExitStatusFile 2>&1")
#running time 1
ptm <- proc.time()
#running time 1
test <- dockerTest()
if(!test){
cat("\nERROR: Docker seems not to be installed in your system\n")
system("echo 10 >& ExitStatusFile")
setwd(home)
return(10)
}
#########check scratch folder exist###########
if (!file.exists(scratch.folder)){
cat(paste("\nIt seems that the ",scratch.folder, "folder does not exist\n"))
system("echo 3 >& ExitStatusFile")
setwd(home)
return(3)
}
#############################################
tmp.folder <- gsub(":","-",gsub(" ","-",date()))
scrat_tmp.folder=file.path(scratch.folder, tmp.folder)
writeLines(scrat_tmp.folder,paste(fastq.folder,"/tempFolderID", sep=""))
cat("\ncreating a folder in scratch folder\n")
dir.create(file.path(scratch.folder, tmp.folder))
dir.create(file.path(scratch.folder, tmp.folder,"/tmp"))
dir <- dir(path=fastq.folder)
dir.info <- dir[which(dir=="run.info")]
if(length(dir.info)>0){
system(paste("chmod 777 -R", file.path(scratch.folder, tmp.folder)))
system(paste("cp ",fastq.folder,"/run.info ", scratch.folder,"/",tmp.folder,"/run.info", sep=""))
}
dir <- dir[grep(".fastq.gz$", dir)]
dir.trim <- dir[grep("trimmed", dir)]
cat("\ncopying \n")
if(length(dir)==0){
cat(paste("It seems that in ", fastq.folder, "there are not fastq.gz files"))
system("echo 1 >& ExitStatusFile")
setwd(home)
return(1)
}else if(length(dir.trim)>0){
dir <- dir.trim
system(paste("chmod 777 -R", file.path(scratch.folder, tmp.folder)))
for(i in dir){
system(paste("cp ",fastq.folder,"/",i, " ",scratch.folder,"/",tmp.folder,"/",i, sep=""))
}
system(paste("chmod 777 -R", file.path(scratch.folder, tmp.folder)))
}else if(length(dir)>2){
cat(paste("It seems that in ", fastq.folder, "there are more than two fastq.gz files"))
system("echo 2 >& ExitStatusFile")
setwd(home)
return(2)
}else{
system(paste("chmod 777 -R", file.path(scratch.folder, tmp.folder)))
for(i in dir){
system(paste("cp ",fastq.folder,"/",i, " ",scratch.folder,"/",tmp.folder,"/",i, sep=""))
}
system(paste("chmod 777 -R", file.path(scratch.folder, tmp.folder)))
}
#Trimmed fastq linking fpr docker
docker_fastq.folder=scrat_tmp.folder
#Trimmed fastq linking fpr docker
fastq <- sub(".gz$", "", dir)
cat("\nsetting as working dir the scratch folder and running docker container\n")
cat("\nsetting as working dir the scratch folder and running bwa docker container\n")
if(circRNA == FALSE){
if(seq.type=="pe"){
params <- paste("--cidfile ",fastq.folder,"/dockerID -v ",docker_fastq.folder,":/data/scratch -v ",genome.folder,":/data/genome -v ", fastq.folder,":/fastq.folder -d docker.io/repbioinfo/bwa.2019.01 sh /bin/bwa_pe.sh /data/scratch ", threads," ", fastq[1]," ", fastq[2]," /data/genome ", sample.id, " ",fastq.folder, sep="")
resultRun <- runDocker(group=group, params=params)
}else if(seq.type=="se"){
params <- paste("--cidfile ",fastq.folder,"/dockerID -v ",docker_fastq.folder,":/data/scratch -v ",genome.folder,":/data/genome -v ", fastq.folder,":/fastq.folder -d docker.io/repbioinfo/bwa.2019.01 sh /bin/bwa_se.sh /data/scratch ", threads," ", fastq[1]," /data/genome ", sample.id, " ",fastq.folder, sep="")
resultRun <- runDocker(group=group, params=params)
}
}
if(circRNA == TRUE){
if(seq.type=="pe"){
params <- paste("--cidfile ",fastq.folder,"/dockerID -v ",docker_fastq.folder,":/data/scratch -v ",genome.folder,":/data/genome -v ", fastq.folder,":/fastq.folder -d docker.io/repbioinfo/bwa.2019.01 sh /bin/bwa_pe_ciri.sh /data/scratch ", threads," ", fastq[1]," ", fastq[2]," /data/genome ", sample.id, " ",fastq.folder, sep="")
resultRun <- runDocker(group=group, params=params)
}else if(seq.type=="se"){
params <- paste("--cidfile ",fastq.folder,"/dockerID -v ",docker_fastq.folder,":/data/scratch -v ",genome.folder,":/data/genome -v ", fastq.folder,":/fastq.folder -d docker.io/repbioinfo/bwa.2019.01 sh /bin/bwa_se_ciri.sh /data/scratch ", threads," ", fastq[1]," /data/genome ", sample.id, " ",fastq.folder, sep="")
resultRun <- runDocker(group=group, params=params)
}
}
if(resultRun==0){
system(paste("cp ", docker_fastq.folder, "/* ", fastq.folder, sep=""))
cat("\nBWA analysis is finished\n")
}
#running time 2
ptm <- proc.time() - ptm
dir <- dir(fastq.folder)
dir <- dir[grep("run.info",dir)]
if(length(dir)>0){
con <- file("run.info", "r")
tmp.run <- readLines(con)
close(con)
tmp.run[length(tmp.run)+1] <- paste("BWA user run time mins ",ptm[1]/60, sep="")
tmp.run[length(tmp.run)+1] <- paste("BWA system run time mins ",ptm[2]/60, sep="")
tmp.run[length(tmp.run)+1] <- paste("BWA elapsed run time mins ",ptm[3]/60, sep="")
writeLines(tmp.run,"run.info")
}else{
tmp.run <- NULL
tmp.run[1] <- paste("run time mins ",ptm[1]/60, sep="")
tmp.run[length(tmp.run)+1] <- paste("BWA system run time mins ",ptm[2]/60, sep="")
tmp.run[length(tmp.run)+1] <- paste("BWA elapsed run time mins ",ptm[3]/60, sep="")
writeLines(tmp.run,"run.info")
}
#saving log and removing docker container
container.id <- readLines(paste(fastq.folder,"/dockerID", sep=""), warn = FALSE)
system(paste("docker logs ", container.id, " >& ", "bwa_",substr(container.id,1,12),".log", sep=""))
system(paste("docker rm ", container.id, sep=""))
#removing temporary folder
cat("\n\nRemoving the bwa temporary file ....\n")
system(paste("rm -R ",scrat_tmp.folder))
system(paste("rm -f ",fastq.folder,"/dockerID_BWA", sep=""))
system(paste("rm -f ",fastq.folder,"/tempFolderID", sep=""))
system(paste("cp ",paste(path.package(package="docker4seq"),"containers/containers.txt",sep="/")," ",fastq.folder, sep=""))
setwd(home)
}
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