25 "git.arvados.org/arvados.git/sdk/go/arvados"
26 log "github.com/sirupsen/logrus"
29 type vcf2fasta struct {
34 gvcfRegionsPyData []byte
45 func (cmd *vcf2fasta) RunCommand(prog string, args []string, stdin io.Reader, stdout, stderr io.Writer) int {
49 fmt.Fprintf(stderr, "%s\n", err)
52 flags := flag.NewFlagSet("", flag.ContinueOnError)
53 flags.SetOutput(stderr)
54 flags.StringVar(&cmd.refFile, "ref", "", "reference fasta `file`")
55 flags.StringVar(&cmd.genomeFile, "genome", "", "reference genome `file`")
56 flags.BoolVar(&cmd.mask, "mask", false, "mask uncalled regions (default: output hom ref)")
57 flags.StringVar(&cmd.gvcfRegionsPy, "gvcf-regions.py", "https://raw.githubusercontent.com/lijiayong/gvcf_regions/master/gvcf_regions.py", "source of gvcf_regions.py")
58 flags.StringVar(&cmd.gvcfType, "gvcf-type", "gatk", "gvcf_type argument to gvcf_regions.py: gatk, complete_genomics, freebayes")
59 flags.StringVar(&cmd.projectUUID, "project", "", "project `UUID` for containers and output data")
60 flags.StringVar(&cmd.outputDir, "output-dir", "", "output directory")
61 flags.IntVar(&cmd.vcpus, "vcpus", 0, "number of VCPUs to request for arvados container (default: 2*number of input files, max 32)")
62 flags.BoolVar(&cmd.runLocal, "local", false, "run on local host (default: run in an arvados container)")
63 cmd.batchArgs.Flags(flags)
64 priority := flags.Int("priority", 500, "container request priority")
65 pprof := flags.String("pprof", "", "serve Go profile data at http://`[addr]:port`")
66 err = flags.Parse(args)
67 if err == flag.ErrHelp {
70 } else if err != nil {
72 } else if cmd.refFile == "" {
73 err = errors.New("reference data (-ref) not specified")
75 } else if flags.NArg() == 0 {
83 log.Println(http.ListenAndServe(*pprof, nil))
88 err = cmd.loadRegionsPy()
95 if cmd.outputDir != "" {
96 err = errors.New("cannot specify output dir in non-local mode")
101 infiles, err = listInputFiles(flags.Args())
105 if cmd.vcpus = len(cmd.batchArgs.Slice(infiles)) * 2; cmd.vcpus > 32 {
109 client := arvados.NewClientFromEnv()
110 runner := arvadosContainerRunner{
111 Name: "lightning vcf2fasta",
113 ProjectUUID: cmd.projectUUID,
114 RAM: 2<<30 + int64(cmd.vcpus)<<28,
117 Mounts: map[string]map[string]interface{}{
118 "/gvcf_regions.py": map[string]interface{}{
120 "content": string(cmd.gvcfRegionsPyData),
124 err = runner.TranslatePaths(&cmd.refFile, &cmd.genomeFile)
128 inputs := flags.Args()
129 for i := range inputs {
130 err = runner.TranslatePaths(&inputs[i])
136 outputs, err = cmd.batchArgs.RunBatches(context.Background(), func(ctx context.Context, batch int) (string, error) {
139 runner.RAM += int64(cmd.vcpus) << 31
141 runner.Args = []string{"vcf2fasta",
143 "-ref", cmd.refFile, fmt.Sprintf("-mask=%v", cmd.mask),
144 "-genome", cmd.genomeFile,
145 "-gvcf-regions.py", "/gvcf_regions.py",
146 "-gvcf-type", cmd.gvcfType,
147 "-output-dir", "/mnt/output",
149 runner.Args = append(runner.Args, cmd.batchArgs.Args(batch)...)
150 runner.Args = append(runner.Args, inputs...)
151 log.Printf("batch %d: %v", batch, runner.Args)
152 return runner.RunContext(ctx)
157 fmt.Fprintln(stdout, strings.Join(outputs, " "))
161 infiles, err := listInputFiles(flags.Args())
165 infiles = cmd.batchArgs.Slice(infiles)
171 todo := make(chan job)
173 for _, infile := range infiles {
174 for phase := 1; phase <= 2; phase++ {
175 todo <- job{vcffile: infile, phase: phase}
181 done := make(chan error, runtime.NumCPU()*2)
182 var wg sync.WaitGroup
183 for i := 0; i < runtime.NumCPU(); i++ {
187 for job := range todo {
189 // a different worker encountered an error
192 err := cmd.vcf2fasta(job.vcffile, job.phase)
194 done <- fmt.Errorf("%s phase %d: %s", job.vcffile, job.phase, err)
212 func maybeInDocker(args, mountfiles []string) []string {
213 if out, err := exec.Command("docker", "image", "ls", "-q", "lightning-runtime").Output(); err != nil || len(out) == 0 {
216 dockerrun := []string{
217 "docker", "run", "--rm", "-i",
220 for _, f := range mountfiles {
221 dockerrun = append(dockerrun, "--volume="+f+":"+f+":ro")
223 dockerrun = append(dockerrun, "lightning-runtime")
224 dockerrun = append(dockerrun, args...)
228 func (cmd *vcf2fasta) vcf2fasta(infile string, phase int) error {
229 ctx, cancel := context.WithCancel(context.Background())
232 _, basename := filepath.Split(infile)
233 outfile := filepath.Join(cmd.outputDir, fmt.Sprintf("%s.%d.fasta.gz", basename, phase))
234 outf, err := os.OpenFile(outfile, os.O_CREATE|os.O_WRONLY, 0777)
236 return fmt.Errorf("error opening output file: %s", err)
239 bufw := bufio.NewWriterSize(outf, 8*1024*1024)
240 gzipw := gzip.NewWriter(bufw)
243 var maskfifo string // filename of mask fifo if we're running bedtools, otherwise ""
245 var wg sync.WaitGroup
246 errs := make(chan error, 2)
248 chrSize := map[string]int{}
250 vcffile, err := os.Open(infile)
254 defer vcffile.Close()
255 var rdr io.Reader = vcffile
256 if strings.HasSuffix(infile, ".gz") {
257 rdr, err = gzip.NewReader(vcffile)
262 contigre := regexp.MustCompile(`([^=,]*)=([^>,]*)`)
263 scanner := bufio.NewScanner(rdr)
265 if s := scanner.Text(); !strings.HasPrefix(s, "##") {
267 } else if !strings.HasPrefix(s, "##contig=<") {
270 kv := map[string]string{}
271 for _, m := range contigre.FindAllStringSubmatch(s[10:], -1) {
274 if kv["ID"] != "" && kv["length"] != "" {
275 chrSize[kv["ID"]], _ = strconv.Atoi(kv["length"])
279 if err = scanner.Err(); err != nil {
280 return fmt.Errorf("error scanning input file %q: %s", infile, err)
282 var regions bytes.Buffer
283 bedargs := []string{"python2", "-", "--gvcf_type", cmd.gvcfType, infile}
284 bed := exec.CommandContext(ctx, bedargs[0], bedargs[1:]...)
285 bed.Stdin = bytes.NewBuffer(cmd.gvcfRegionsPyData)
286 bed.Stdout = ®ions
287 bed.Stderr = cmd.stderr
288 log.Printf("running %v", bed.Args)
290 log.Printf("exited %v", bed.Args)
292 return fmt.Errorf("gvcf_regions: %s", err)
295 if cmd.genomeFile != "" {
296 // Read chromosome sizes from genome file in
297 // case any weren't specified in the VCF
299 genomeFile, err := os.Open(cmd.genomeFile)
301 return fmt.Errorf("error opening genome file %q: %s", cmd.genomeFile, err)
303 scanner := bufio.NewScanner(genomeFile)
307 _, err := fmt.Sscanf(scanner.Text(), "%s\t%d", &chr, &size)
309 return fmt.Errorf("error parsing genome file %q: %s", cmd.genomeFile, err)
311 if chrSize[chr] == 0 {
315 if err = scanner.Err(); err != nil {
316 return fmt.Errorf("error scanning genome file %q: %s", cmd.genomeFile, err)
320 // "bedtools complement" expects the chromosome sizes
321 // ("genome file") to appear in the same order as the
322 // chromosomes in the input vcf, so we need to sort
324 scanner = bufio.NewScanner(bytes.NewBuffer(append([]byte(nil), regions.Bytes()...)))
325 var sortedGenomeFile bytes.Buffer
329 _, err := fmt.Sscanf(scanner.Text(), "%s\t%d", &chr, &size)
331 return fmt.Errorf("error parsing gvcf_regions output: %s", err)
333 if size, ok := chrSize[chr]; ok {
334 fmt.Fprintf(&sortedGenomeFile, "%s\t%d\n", chr, size)
339 // The bcftools --mask argument needs to end in ".bed"
340 // in order to be parsed as a BED file, so we need to
341 // use a named pipe instead of stdin.
342 tempdir, err := ioutil.TempDir("", "")
344 return fmt.Errorf("TempDir: %s", err)
346 defer os.RemoveAll(tempdir)
347 maskfifo = filepath.Join(tempdir, "fifo.bed")
348 err = syscall.Mkfifo(maskfifo, 0600)
350 return fmt.Errorf("mkfifo: %s", err)
353 // bedtools complement can't seem to read from a pipe
354 // reliably -- "Error: line number 1 of file
355 // /dev/stdin has 1 fields, but 3 were expected." --
356 // so we stage to a temp file.
357 regionsFile := filepath.Join(tempdir, "gvcf_regions.bed")
358 err = ioutil.WriteFile(regionsFile, regions.Bytes(), 0644)
367 maskfifow, err := os.OpenFile(maskfifo, os.O_WRONLY, 0)
372 defer maskfifow.Close()
374 bedcompargs := []string{"bedtools", "complement", "-i", regionsFile, "-g", "/dev/stdin"}
375 bedcompargs = maybeInDocker(bedcompargs, []string{cmd.genomeFile})
376 bedcomp := exec.CommandContext(ctx, bedcompargs[0], bedcompargs[1:]...)
377 bedcomp.Stdin = &sortedGenomeFile
378 bedcomp.Stdout = maskfifow
379 bedcomp.Stderr = cmd.stderr
380 log.Printf("running %v", bedcomp.Args)
382 log.Printf("exited %v", bedcomp.Args)
384 errs <- fmt.Errorf("bedtools complement: %s", err)
387 err = maskfifow.Close()
398 consargs := []string{"bcftools", "consensus", "--fasta-ref", cmd.refFile, "-H", fmt.Sprint(phase)}
400 consargs = append(consargs, "--mask", maskfifo)
402 consargs = append(consargs, infile)
403 indexsuffix := ".tbi"
404 if _, err := os.Stat(infile + ".csi"); err == nil {
407 mounts := []string{infile, infile + indexsuffix, cmd.refFile}
409 mounts = append(mounts, maskfifo)
411 consargs = maybeInDocker(consargs, mounts)
413 consensus := exec.CommandContext(ctx, consargs[0], consargs[1:]...)
414 consensus.Stderr = os.Stderr
415 consensus.Stdout = gzipw
416 consensus.Stderr = cmd.stderr
417 log.Printf("running %v", consensus.Args)
418 err = consensus.Run()
420 errs <- fmt.Errorf("bcftools consensus: %s", err)
423 log.Printf("exited %v", consensus.Args)
442 for err := range errs {
452 func (cmd *vcf2fasta) loadRegionsPy() error {
453 if strings.HasPrefix(cmd.gvcfRegionsPy, "http") {
454 resp, err := http.Get(cmd.gvcfRegionsPy)
458 if resp.StatusCode != http.StatusOK {
459 return fmt.Errorf("get %q: http status %d", cmd.gvcfRegionsPy, resp.StatusCode)
461 buf, err := ioutil.ReadAll(resp.Body)
463 return fmt.Errorf("get %q: read body: %s", cmd.gvcfRegionsPy, err)
465 cmd.gvcfRegionsPyData = buf
468 buf, err := ioutil.ReadFile(cmd.gvcfRegionsPy)
472 cmd.gvcfRegionsPyData = buf