classes/package: Add extended packaged data

Adds extended package data which is encoded as JSON which allows it to
encode more structure than the "flat" package data files. The extended
data might be much larger than the standard package data, so it is not
read by default and instead requires
oe.packagedata.read_subpkgdata_extended() to be called

Currently, the file sizes and ELF debug sources are saved off into the
extended package data

(From OE-Core rev: db9cf430e54ae68da80fbc3fba80ce88d8df164d)

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Reviewed-by: Saul Wold <saul.wold@windriver.com>
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/package.bbclass

@@ -1224,6 +1224,14 @@ python split_and_strip_files () {
                 # Modified the file so clear the cache
                 cpath.updatecache(file)
 
+    def strip_pkgd_prefix(f):
+        nonlocal dvar
+
+        if f.startswith(dvar):
+            return f[len(dvar):]
+
+        return f
+
     #
     # First lets process debug splitting
     #
@@ -1237,6 +1245,8 @@ python split_and_strip_files () {
                 for file in staticlibs:
                     results.append( (file,source_info(file, d)) )
 
+        d.setVar("PKGDEBUGSOURCES", {strip_pkgd_prefix(f): sorted(s) for f, s in results})
+
         sources = set()
         for r in results:
             sources.update(r[1])
@@ -1549,6 +1559,7 @@ PKGDATA_VARS = "PN PE PV PR PKGE PKGV PKGR LICENSE DESCRIPTION SUMMARY RDEPENDS
 python emit_pkgdata() {
     from glob import glob
     import json
+    import bb.compress.zstd
 
     def process_postinst_on_target(pkg, mlprefix):
         pkgval = d.getVar('PKG:%s' % pkg)
@@ -1621,6 +1632,8 @@ fi
     with open(data_file, 'w') as fd:
         fd.write("PACKAGES: %s\n" % packages)
 
+    pkgdebugsource = d.getVar("PKGDEBUGSOURCES") or []
+
     pn = d.getVar('PN')
     global_variants = (d.getVar('MULTILIB_GLOBAL_VARIANTS') or "").split()
     variants = (d.getVar('MULTILIB_VARIANTS') or "").split()
@@ -1640,17 +1653,32 @@ fi
             pkgval = pkg
             d.setVar('PKG:%s' % pkg, pkg)
 
+        extended_data = {
+            "files_info": {}
+        }
+
         pkgdestpkg = os.path.join(pkgdest, pkg)
         files = {}
+        files_extra = {}
         total_size = 0
         seen = set()
         for f in pkgfiles[pkg]:
-            relpth = os.path.relpath(f, pkgdestpkg)
+            fpath = os.sep + os.path.relpath(f, pkgdestpkg)
+
             fstat = os.lstat(f)
-            files[os.sep + relpth] = fstat.st_size
+            files[fpath] = fstat.st_size
+
+            extended_data["files_info"].setdefault(fpath, {})
+            extended_data["files_info"][fpath]['size'] = fstat.st_size
+
             if fstat.st_ino not in seen:
                 seen.add(fstat.st_ino)
                 total_size += fstat.st_size
+
+            if fpath in pkgdebugsource:
+                extended_data["files_info"][fpath]['debugsrc'] = pkgdebugsource[fpath]
+                del pkgdebugsource[fpath]
+
         d.setVar('FILES_INFO:' + pkg , json.dumps(files, sort_keys=True))
 
         process_postinst_on_target(pkg, d.getVar("MLPREFIX"))
@@ -1671,6 +1699,11 @@ fi
 
             sf.write('%s:%s: %d\n' % ('PKGSIZE', pkg, total_size))
 
+        subdata_extended_file = pkgdatadir + "/extended/%s.json.zstd" % pkg
+        num_threads = int(d.getVar("BB_NUMBER_THREADS"))
+        with bb.compress.zstd.open(subdata_extended_file, "wt", encoding="utf-8", num_threads=num_threads) as f:
+            json.dump(extended_data, f, sort_keys=True, separators=(",", ":"))
+
         # Symlinks needed for rprovides lookup
         rprov = d.getVar('RPROVIDES:%s' % pkg) or d.getVar('RPROVIDES')
         if rprov:
@@ -1701,7 +1734,8 @@ fi
         write_extra_runtime_pkgs(global_variants, packages, pkgdatadir)
 
 }
-emit_pkgdata[dirs] = "${PKGDESTWORK}/runtime ${PKGDESTWORK}/runtime-reverse ${PKGDESTWORK}/runtime-rprovides"
+emit_pkgdata[dirs] = "${PKGDESTWORK}/runtime ${PKGDESTWORK}/runtime-reverse ${PKGDESTWORK}/runtime-rprovides ${PKGDESTWORK}/extended"
+emit_pkgdata[vardepsexclude] = "BB_NUMBER_THREADS"
 
 ldconfig_postinst_fragment() {
 if [ x"$D" = "x" ]; then

meta/lib/oe/packagedata.py

@@ -57,6 +57,18 @@ def read_subpkgdata_dict(pkg, d):
         ret[newvar] = subd[var]
     return ret
 
+def read_subpkgdata_extended(pkg, d):
+    import json
+    import bb.compress.zstd
+
+    fn = d.expand("${PKGDATA_DIR}/extended/%s.json.zstd" % pkg)
+    try:
+        num_threads = int(d.getVar("BB_NUMBER_THREADS"))
+        with bb.compress.zstd.open(fn, "rt", encoding="utf-8", num_threads=num_threads) as f:
+            return json.load(f)
+    except FileNotFoundError:
+        return None
+
 def _pkgmap(d):
     """Return a dictionary mapping package to recipe name."""