fe02c55d26614f1d5059c884fb2594f9b4d5ad50
mspeir
  Wed Aug 12 08:02:19 2026 -0700
singleCellSignalsPeaks: point at the hub build's new home, fix the file-copy script

The hub build now lives in the cellBrowser repo under ucsc/allTracksHub, so the makeDocs
link there instead of a personal work dir. HUB_BUILD in these scripts is the build's
output dir, not its code; comments say so now, paths unchanged.

copySingleCellSignalsPeaksFiles.py was silently copying nothing: it compared a whole line
against "parent <composite>", but stanzas are now indented and read "parent <composite>
off". Now dedents, matches the first token, and refuses to run on zero subtracks. Dry runs
give 925 hg38 / 587 mm10, none missing.

refs #37914

diff --git src/hg/makeDb/scripts/singleCellSignalsPeaks/makeSingleCellSignalsPeaksRa.py src/hg/makeDb/scripts/singleCellSignalsPeaks/makeSingleCellSignalsPeaksRa.py
index cfe8c684937..2c2b9f7756f 100644
--- src/hg/makeDb/scripts/singleCellSignalsPeaks/makeSingleCellSignalsPeaksRa.py
+++ src/hg/makeDb/scripts/singleCellSignalsPeaks/makeSingleCellSignalsPeaksRa.py
@@ -1,201 +1,203 @@
 #!/usr/bin/env python3
 """
 Regenerate the native singleCellSignalsPeaks trackDb .ra for a genome assembly
 from the Cell Browser all-tracks-hub build (Redmine #37820 for hg38, #37914 for
 mm10).
 
 The native "singleCellSignalsPeaks" faceted composite is the Genome Browser
 version of the hub's main signal-&-peaks composite for that assembly
 (cellBrowserHg38 for hg38, cellBrowserMm10 for mm10). This script takes that
 composite's stanzas from the hub build and rewrites them into a native track:
   - the composite is renamed cellBrowser<Asm> -> singleCellSignalsPeaks
   - each subtrack bigDataUrl is repointed to the local /gbdb copy
   - subtrack colors / labels / types are carried through unchanged (so the
     harmonized cell-type labels and any per-track colors come along for free)
 
 The data files themselves are copied into
 /hive/data/genomes/<asm>/bed/singleCellSignalsPeaks/<served-relpath> (see
 copySingleCellSignalsPeaksFiles.py) and served via the
 /gbdb/<asm>/bbi/singleCellSignalsPeaks symlink; this script only (re)writes the
 trackDb .ra.
 
 Usage:
   makeSingleCellSignalsPeaksRa.py [--assembly hg38|mm10] [--stanzas STANZAS] [--out OUT]
 """
 import re, os, sys, argparse
 from urllib.parse import urlparse
 
-# Where the hub build (build_manifest.py / build_stanzas.py) writes its stanzas and
-# metadata. That machinery builds the whole Cell Browser super hub, not just this track,
-# so it lives outside the kent tree; override with HUB_BUILD when it moves.
+# Where the hub build writes its stanzas and metadata -- its OUTPUT dir, not its code.
+# The build itself lives in the cellBrowser repo (ucsc/allTracksHub), since it builds the
+# whole Cell Browser super hub and not just this track:
+#   https://github.com/ucscGenomeBrowser/cellBrowser/tree/develop/ucsc/allTracksHub
+# Its output dir is set there by CBHUB_OUT; keep this default in step with it.
 HUB_BUILD = os.environ.get(
     "HUB_BUILD", "/hive/users/mspeir/claude/cell-browser/all-tracks-hub-build")
 TRACK = "singleCellSignalsPeaks"
 GROUP = "regulation"                  # ATAC-seq signal/peaks live with the ENCODE
                                       # regulatory tracks, not under singleCell
 ORG = {"hg38": "human", "mm10": "mouse"}   # trackDb organism subdir per assembly
 
 def main():
     ap = argparse.ArgumentParser()
     ap.add_argument("--assembly", default="hg38", choices=sorted(ORG))
     ap.add_argument("--stanzas")
     ap.add_argument("--out")
     args = ap.parse_args()
 
     asm = args.assembly
     hub_composite = "cellBrowser" + asm.capitalize()   # cellBrowserHg38 / cellBrowserMm10
     gbdb = "/gbdb/%s/bbi/%s" % (asm, TRACK)
     stanzas = args.stanzas or os.path.join(HUB_BUILD, "stanzas/%s.trackDb.txt" % asm)
     out = args.out or os.path.join(
         os.path.dirname(os.path.abspath(__file__)),
         "../../trackDb/%s/%s/%s.ra" % (ORG[asm], asm, TRACK))
 
     header = "\n".join([
         "track " + TRACK,
         "compositeTrack faceted",
         "group " + GROUP,
         "visibility hide",
         "type bigBed 3",
         "shortLabel Single-cell ATAC-seq",
         "longLabel Single-cell ATAC-seq Peaks and Signals for UCSC Cell Browser datasets",
         "metaDataUrl %s/%s_metadata.tsv" % (gbdb, TRACK),
         "primaryKey Track",
         "subtrackUrls Dataset=https://cells.ucsc.edu/?ds=$$",
         "defaultSortField Cell_class",
         "maxCheckboxes 200",
     ])
 
     # class ordering for subtrack priority: palette line order (neurons, glia,
     # vascular, immune, ...) so same-class tracks group together in the display,
     # with the source (hub/dataset) order preserved within a class. The subtrack's
     # broad class is recovered from its color (palette is 1:1 class<->color).
     color_rank = {}
     # prefer the palette archived alongside this script (the copy of record, written by
     # build_celltype_crosswalks.py); fall back to the hub build dir
     _palf = os.path.join(os.path.dirname(os.path.abspath(__file__)),
                          "celltype-crosswalks", "celltype-palette.tsv")
     if not os.path.isfile(_palf):
         _palf = os.path.join(HUB_BUILD, "celltype-crosswalks", "celltype-palette.tsv")
     for _i, _l in enumerate(open(_palf)):
         _pp = _l.rstrip("\n").split("\t")
         if len(_pp) >= 2:
             color_rank[_pp[1]] = _i
     class_seq = {}                        # rank -> running counter within that class
 
     # a source path segment of "old" / "*.old" / "*_old" marks deprecated data
     # (e.g. cortex-atac/hub/interact.old/); the hub may keep it, but the native
     # track must not carry it.
     OLD_SEG = re.compile(r"(^|/)[^/]*(\.old|_old|\bold)($|/)", re.I)
 
     out_stanzas = [header]
     n = skipped_old = n_stanzas = n_parented = 0
     bad_src = []          # source track names not in the cellBrowser<Asm>_ namespace
     for s in re.split(r"\n\s*\n", open(stanzas).read().strip()):
         # Dedent: the hub stanzas are indented to show their hierarchy, and this script
         # re-indents on write. Parsing them indented broke the "track " rename below
         # without tripping any count check -- subtracks kept their cellBrowser<Asm> names
         # and no longer matched their facet metadata rows.
         lines = [l.lstrip() for l in s.splitlines()]
         n_stanzas += 1
         # Match on the parent's first token rather than the whole line. The exact-string
         # compare this replaces would have silently skipped every stanza if the hub ever
         # emitted "parent <composite> off" or changed its spacing, leaving a header-only
         # .ra and a zero exit status.
         parent = next((l for l in lines if l.strip().startswith("parent ")), "")
         ptoks = parent.split()
         if len(ptoks) >= 2:
             n_parented += 1
         if len(ptoks) < 2 or ptoks[1] != hub_composite:
             continue
         bdu = next((l for l in lines if l.strip().startswith("bigDataUrl ")), "")
         rel_check = urlparse(bdu.split(None, 1)[1].strip()).path if bdu else ""
         if OLD_SEG.search(rel_check):
             skipped_old += 1
             continue
         n += 1
         # priority groups tracks by broad class (via color), source order within
         color = next((l.split(None, 1)[1].strip() for l in lines
                       if l.strip().startswith("color ")), "")
         rank = color_rank.get(color, len(color_rank))     # unknown/uncolored last
         seq = class_seq.get(rank, 0); class_seq[rank] = seq + 1
         priority = rank * 100000 + seq
         newl = []
         for l in lines:
             if l.startswith("track "):
                 # Validate the SOURCE name before slicing it. This used to chop a fixed
                 # number of characters off whatever it was given, so a track not actually
                 # named cellBrowser<Asm>_* came out silently mangled but well-formed
                 # (BOGUS_allen_basal_ganglia_atac__dorsal -> ..._ia_atac__dorsal), which no
                 # check on the output could catch.
                 src_name = l.split(None, 1)[1]
                 if not src_name.startswith(hub_composite + "_"):
                     bad_src.append(src_name)
                     continue
                 suffix = src_name[len(hub_composite) + 1:]
                 newl.append("track %s_%s" % (TRACK, suffix))
             elif l.strip().startswith("parent ") and l.split()[1] == hub_composite:
                 # "off" so every subtrack is unchecked by default; the user turns
                 # on individual tracks via the faceted selector
                 newl.append("parent " + TRACK + " off")
                 newl.append("priority " + str(priority))
             elif l.strip().startswith("bigDataUrl "):
                 rel = urlparse(l.split(None, 1)[1].strip()).path.lstrip("/")
                 newl.append("bigDataUrl %s/%s" % (gbdb, rel))
             else:
                 newl.append(l)
         out_stanzas.append("\n".join(newl))
 
     # Every emitted subtrack must be "track <TRACK>_<non-empty suffix>". Checking only the
     # prefix was not enough: the rename always prepends it, so a source name that did not
     # start with the hub composite still passed, just with an empty suffix.
     if bad_src:
         sys.exit("ERROR: %d source track name(s) are not %s_* , e.g. %r. Renaming them "
                  "would silently mangle the name. Has the hub stanza layout changed?"
                  % (len(bad_src), hub_composite, bad_src[0]))
     _ok = re.compile(r"^track %s_\S+$" % re.escape(TRACK))
     bad = [x.split("\n", 1)[0] for x in out_stanzas[1:]
            if not _ok.match(x.split("\n", 1)[0])]
     if bad:
         sys.exit("ERROR: %d subtrack(s) were not renamed into the %s namespace, e.g. %r. "
                  "Has the hub stanza layout changed?" % (len(bad), TRACK, bad[0]))
 
     # Sanity checks: fail loudly rather than write a truncated .ra. A hub-format change
     # that stops the parent line matching would otherwise produce a header-only file and
     # exit 0, and the next trackDb load would quietly drop every subtrack.
     if n == 0:
         sys.exit("ERROR: no subtracks matched composite '%s' in %s "
                  "(%d stanzas, %d with a parent line). Has the hub stanza format "
                  "changed?" % (hub_composite, stanzas, n_stanzas, n_parented))
     # The facet metadata is the parallel artifact: build_stanzas writes one row per
     # subtrack of this composite, so the counts must agree once the old-dir skips are
     # added back. A mismatch means the .ra and the metadata disagree, which shows up in
     # the browser as subtracks with no facet row (or facet rows with no track).
     meta = os.path.join(HUB_BUILD, "meta", "%s.metadata.tsv" % asm)
     if os.path.isfile(meta):
         with open(meta) as fh:
             meta_rows = sum(1 for _ in fh) - 1          # minus the header
         if meta_rows != n + skipped_old:
             sys.exit("ERROR: %s has %d rows but %d subtracks were kept (+%d old-dir "
                      "skipped); the .ra and the facet metadata must match 1:1"
                      % (meta, meta_rows, n, skipped_old))
     else:
         sys.stderr.write("WARNING: no facet metadata at %s, skipping the 1:1 check\n"
                          % meta)
 
     # Indent subtracks under the composite, as the trackDb .ra files in the tree do
     # (chainNet, encode3): the container sits flush left and each level below it is
     # indented one step, with every line of the stanza moving together.
     def indent(stanza, width=4):
         lines = stanza.split("\n")
         if not any(l.startswith("parent ") for l in lines):
             return stanza
         pad = " " * width
         return "\n".join(pad + l if l.strip() else l for l in lines)
 
     with open(os.path.abspath(out), "w") as fh:
         fh.write("\n\n".join(indent(s) for s in out_stanzas) + "\n")
     print("wrote %s: %d subtracks (assembly=%s, composite=%s, group=%s; skipped %d old-dir)" % (
         out, n, asm, hub_composite, GROUP, skipped_old))
 
 if __name__ == "__main__":
     main()