[PATCH] contrib: Add "external blob storage" clean and smudge filters

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From: Vitaly _Vi Shukela <public_vi@xxxxxx>

Proof-of-concept "external storage" for big blobs using filters.
This is rather high-impact thing, expect a great slowdown or other
inconsistencies

Files are uploaded on a server each time Git attempts to read them
When checking out, files are downloaded from the server, so it should be
mostly transparent for user (except of slowness)
SHA-1 hashes are stored in Git instead of actual file content

Signed-off-by: Vitaly _Vi Shukela <public_vi@xxxxxx>
---
 contrib/filters/external_blob_storage.config |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)
 create mode 100644 contrib/filters/external_blob_storage.config

diff --git a/contrib/filters/external_blob_storage.config b/contrib/filters/external_blob_storage.config
new file mode 100644
index 0000000..054eb38
--- /dev/null
+++ b/contrib/filters/external_blob_storage.config
@@ -0,0 +1,11 @@
+# Proof-of-concept "external storage" for big blobs using filters.
+# This is rather high-impact thing, expect a great slowdown or other inconsistencies
+
+# Put strings like "*.avi filter=external_blob_storage" to your .gitattributes or .git/info/attributes files,
+# and that files will be uploaded on server (test@xxxxxxxxx) each time Git attempts to read them (git add, git diff, git status, ...)
+# When checking out, files will be downloaded from server.
+# SHA-1 hashes are stored in Git instead of actual file content
+
+[filter "external_blob_storage"]
+	clean = ssh test@xxxxxxxxx 'tee qqq | sha1sum | awk \"{print \\$1}\" | (read S && mv qqq \"$S\" && echo \"$S\" )'
+	smudge = ssh test@xxxxxxxxx 'read S && cat \"$S\"'
-- 
1.7.1

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