clonebundles: adds a auto-generate.serve-inline option

This new option disable the "external" serving of auto generated bundle in favor
of using the new "inline bundle" feature that allow serving such bundle through
the mercurial protocol.

This is a less efficient, but very easy to setup way to start using clone bundle.

hgext/clonebundles.py

@@ -254,9 +254,28 b' command, or automatically on each reposi'
     auto-generate.on-change=yes
     auto-generate.formats= zstd-v2, gzip-v2
 
+Automatic Inline serving
+........................
+
+The simplest way to serve the generated bundle is through the Mercurial
+protocol. However it is not the most efficient as request will still be served
+by that main server. It is useful in case where authentication is complexe or
+when an efficient mirror system is already in use anyway. See the `inline
+clonebundles` section above for details about inline clonebundles
+
+To automatically serve generated bundle through inline clonebundle, simply set
+the following option::
+
+    auto-generate.serve-inline=yes
+
+Enabling this option disable the managed upload and serving explained below.
+
 Bundles Upload and Serving:
 ...........................
 
+This is the most efficient way to serve automatically generated clone bundles,
+but requires some setup.
+
 The generated bundles need to be made available to users through a "public" URL.
 This should be donne through `clone-bundles.upload-command` configuration. The
 value of this command should be a shell command. It will have access to the
@@ -344,6 +363,7 b' command = registrar.command(cmdtable)'
 
 configitem(b'clone-bundles', b'auto-generate.on-change', default=False)
 configitem(b'clone-bundles', b'auto-generate.formats', default=list)
+configitem(b'clone-bundles', b'auto-generate.serve-inline', default=False)
 configitem(b'clone-bundles', b'trigger.below-bundled-ratio', default=0.95)
 configitem(b'clone-bundles', b'trigger.revs', default=1000)
 
@@ -753,9 +773,18 b' def upload_bundle(repo, bundle):'
 
     The upload is done using the `clone-bundles.upload-command`
     """
+    inline = repo.ui.config(b'clone-bundles', b'auto-generate.serve-inline')
+    basename = repo.vfs.basename(bundle.filepath)
+    if inline:
+        dest_dir = repo.vfs.join(bundlecaches.BUNDLE_CACHE_DIR)
+        repo.vfs.makedirs(dest_dir)
+        dest = repo.vfs.join(dest_dir, basename)
+        util.copyfiles(bundle.filepath, dest, hardlink=True)
+        url = bundlecaches.CLONEBUNDLESCHEME + basename
+        return bundle.uploaded(url, basename)
+    else:
     cmd = repo.ui.config(b'clone-bundles', b'upload-command')
     url = repo.ui.config(b'clone-bundles', b'url-template')
-    basename = repo.vfs.basename(bundle.filepath)
     filepath = procutil.shellquote(bundle.filepath)
     variables = {
         b'HGCB_BUNDLE_PATH': filepath,
@@ -776,6 +805,12 b' def upload_bundle(repo, bundle):'
 def delete_bundle(repo, bundle):
     """delete a bundle from storage"""
     assert bundle.ready
+
+    inline = bundle.file_url.startswith(bundlecaches.CLONEBUNDLESCHEME)
+
+    if inline:
+        msg = b'clone-bundles: deleting inline bundle %s\n'
+    else:
     msg = b'clone-bundles: deleting bundle %s\n'
     msg %= bundle.basename
     if repo.ui.configbool(b'devel', b'debug.clonebundles'):
@@ -783,6 +818,13 b' def delete_bundle(repo, bundle):'
     else:
         repo.ui.debug(msg)
 
+    if inline:
+        inline_path = repo.vfs.join(
+            bundlecaches.BUNDLE_CACHE_DIR,
+            bundle.basename,
+        )
+        util.tryunlink(inline_path)
+    else:
     cmd = repo.ui.config(b'clone-bundles', b'delete-command')
     variables = {
         b'HGCB_BUNDLE_URL': bundle.file_url,

tests/test-clonebundles-autogen.t

@@ -382,3 +382,95 b' bundles should have been generated with '
   $ cat ../server/.hg/clonebundles.manifest
   https://example.com/final-upload/full-v1-11_revs-4226b1cd5fda_tip-*_acbr.hg BUNDLESPEC=v1 REQUIRESNI=true (glob)
   https://example.com/final-upload/full-v2-11_revs-4226b1cd5fda_tip-*_acbr.hg BUNDLESPEC=v2 REQUIRESNI=true (glob)
+
+Test serving them through inline-clone bundle
+=============================================
+
+  $ cat >> ../server/.hg/hgrc << EOF
+  > [clone-bundles]
+  > auto-generate.serve-inline=yes
+  > EOF
+  $ hg -R ../server/ admin::clone-bundles-clear
+  clone-bundles: deleting bundle full-v1-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)
+  clone-bundles: deleting bundle full-v2-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)
+
+initial generation
+------------------
+
+
+  $ hg -R ../server/ admin::clone-bundles-refresh
+  clone-bundles: starting bundle generation: v1
+  11 changesets found
+  clone-bundles: starting bundle generation: v2
+  11 changesets found
+  $ cat ../server/.hg/clonebundles.manifest
+  peer-bundle-cache://full-v1-11_revs-4226b1cd5fda_tip-*_acbr.hg BUNDLESPEC=v1 (glob)
+  peer-bundle-cache://full-v2-11_revs-4226b1cd5fda_tip-*_acbr.hg BUNDLESPEC=v2 (glob)
+  $ ls -1 ../server/.hg/bundle-cache
+  full-v1-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)
+  full-v2-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)
+  $ ls -1 ../final-upload
+
+Regeneration eventually cleanup the old ones
+--------------------------------------------
+
+create more content
+  $ touch voit
+  $ hg -q commit -A -m 'add voit'
+  $ touch ar
+  $ hg -q commit -A -m 'add ar'
+  $ hg push
+  pushing to $TESTTMP/server
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 2 changesets with 2 changes to 2 files
+
+check first regeneration
+
+  $ hg -R ../server/ admin::clone-bundles-refresh
+  clone-bundles: starting bundle generation: v1
+  13 changesets found
+  clone-bundles: starting bundle generation: v2
+  13 changesets found
+  $ cat ../server/.hg/clonebundles.manifest
+  peer-bundle-cache://full-v1-13_revs-8a81f9be54ea_tip-*_acbr.hg BUNDLESPEC=v1 (glob)
+  peer-bundle-cache://full-v2-13_revs-8a81f9be54ea_tip-*_acbr.hg BUNDLESPEC=v2 (glob)
+  $ ls -1 ../server/.hg/bundle-cache
+  full-v1-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)
+  full-v1-13_revs-8a81f9be54ea_tip-*_acbr.hg (glob)
+  full-v2-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)
+  full-v2-13_revs-8a81f9be54ea_tip-*_acbr.hg (glob)
+  $ ls -1 ../final-upload
+
+check first regeneration (should cleanup the one before that last)
+
+  $ touch "investi"
+  $ hg -q commit -A -m 'add investi'
+  $ touch "lesgisla"
+  $ hg -q commit -A -m 'add lesgisla'
+  $ hg push
+  pushing to $TESTTMP/server
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 2 changesets with 2 changes to 2 files
+
+  $ hg -R ../server/ admin::clone-bundles-refresh
+  clone-bundles: deleting inline bundle full-v1-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)
+  clone-bundles: deleting inline bundle full-v2-11_revs-4226b1cd5fda_tip-*_acbr.hg (glob)
+  clone-bundles: starting bundle generation: v1
+  15 changesets found
+  clone-bundles: starting bundle generation: v2
+  15 changesets found
+  $ cat ../server/.hg/clonebundles.manifest
+  peer-bundle-cache://full-v1-15_revs-17615b3984c2_tip-*_acbr.hg BUNDLESPEC=v1 (glob)
+  peer-bundle-cache://full-v2-15_revs-17615b3984c2_tip-*_acbr.hg BUNDLESPEC=v2 (glob)
+  $ ls -1 ../server/.hg/bundle-cache
+  full-v1-13_revs-8a81f9be54ea_tip-*_acbr.hg (glob)
+  full-v1-15_revs-17615b3984c2_tip-*_acbr.hg (glob)
+  full-v2-13_revs-8a81f9be54ea_tip-*_acbr.hg (glob)
+  full-v2-15_revs-17615b3984c2_tip-*_acbr.hg (glob)
+  $ ls -1 ../final-upload