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[89.95.107.230]) by smtp.gmail.com with ESMTPSA id s11sm1356384wrb.30.2018.01.03.08.35.10 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 03 Jan 2018 08:35:11 -0800 (PST) From: Christian Couder X-Google-Original-From: Christian Couder To: git@vger.kernel.org Cc: Junio C Hamano , Jeff King , Ben Peart , Jonathan Tan , Nguyen Thai Ngoc Duy , Mike Hommey , Lars Schneider , Eric Wong , Christian Couder , Jeff Hostetler , Ben Peart Subject: [PATCH 33/40] Add t0450 to test 'get_direct' mechanism Date: Wed, 3 Jan 2018 17:33:56 +0100 Message-Id: <20180103163403.11303-34-chriscool@tuxfamily.org> X-Mailer: git-send-email 2.16.0.rc0.16.g82191dbc6c.dirty In-Reply-To: <20180103163403.11303-1-chriscool@tuxfamily.org> References: <20180103163403.11303-1-chriscool@tuxfamily.org> Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org From: Ben Peart Signed-off-by: Ben Peart Signed-off-by: Christian Couder --- t/t0450-read-object.sh | 28 +++++++++++++++++++++ t/t0450/read-object | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 96 insertions(+) create mode 100755 t/t0450-read-object.sh create mode 100755 t/t0450/read-object diff --git a/t/t0450-read-object.sh b/t/t0450-read-object.sh new file mode 100755 index 0000000000..6b97305452 --- /dev/null +++ b/t/t0450-read-object.sh @@ -0,0 +1,28 @@ +#!/bin/sh + +test_description='tests for long running read-object process' + +. ./test-lib.sh + +PATH="$PATH:$TEST_DIRECTORY/t0450" + +test_expect_success 'setup host repo with a root commit' ' + test_commit zero && + hash1=$(git ls-tree HEAD | grep zero.t | cut -f1 | cut -d\ -f3) +' + +HELPER="read-object" + +test_expect_success 'blobs can be retrieved from the host repo' ' + git init guest-repo && + (cd guest-repo && + git config odb.magic.subprocessCommand "$HELPER" && + git cat-file blob "$hash1" >/dev/null) +' + +test_expect_success 'invalid blobs generate errors' ' + cd guest-repo && + test_must_fail git cat-file blob "invalid" +' + +test_done diff --git a/t/t0450/read-object b/t/t0450/read-object new file mode 100755 index 0000000000..004e9368c9 --- /dev/null +++ b/t/t0450/read-object @@ -0,0 +1,68 @@ +#!/usr/bin/perl +# +# Example implementation for the Git read-object protocol version 1 +# See Documentation/technical/read-object-protocol.txt +# +# Allows you to test the ability for blobs to be pulled from a host git repo +# "on demand." Called when git needs a blob it couldn't find locally due to +# a lazy clone that only cloned the commits and trees. +# +# A lazy clone can be simulated via the following commands from the host repo +# you wish to create a lazy clone of: +# +# cd /host_repo +# git rev-parse HEAD +# git init /guest_repo +# git cat-file --batch-check --batch-all-objects | grep -v 'blob' | +# cut -d' ' -f1 | git pack-objects /e/guest_repo/.git/objects/pack/noblobs +# cd /guest_repo +# git config core.virtualizeobjects true +# git reset --hard +# +# Please note, this sample is a minimal skeleton. No proper error handling +# was implemented. +# + +use 5.008; +use lib (split(/:/, $ENV{GITPERLLIB})); +use strict; +use warnings; +use Git::Packet; + +# +# Point $DIR to the folder where your host git repo is located so we can pull +# missing objects from it +# +my $DIR = "../.git/"; + +packet_initialize("git-read-object", 1); + +my %remote_caps = packet_read_and_check_capabilities("get_direct"); +packet_check_and_write_capabilities(\%remote_caps, "get_direct"); + +while (1) { + my ($res, $command) = packet_txt_read(); + + if ( $res == -1 ) { + exit 0; + } + + $command =~ s/^command=//; + + if ( $command eq "init" ) { + packet_bin_read(); + + packet_txt_write("status=success"); + packet_flush(); + } elsif ( $command eq "get_direct" ) { + my ($sha1) = packet_txt_read() =~ /^sha1=([0-9a-f]{40})$/; + packet_bin_read(); + + system ('git --git-dir="' . $DIR . '" cat-file blob ' . $sha1 . ' | GIT_NO_EXTERNAL_ODB=1 git hash-object -w --stdin >/dev/null 2>&1'); + + packet_txt_write(($?) ? "status=error" : "status=success"); + packet_flush(); + } else { + die "bad command '$command'"; + } +} -- 2.16.0.rc0.16.g82191dbc6c.dirty