Decouple BouncyCastle from JGit Core

Motivation: BouncyCastle serves as 'default' implementation of
the GPG Signer. If a client application does not use it there is no need
to pull in this dependency, especially since BouncyCastle is a large
library.

Move the classes depending on BouncyCastle to an OSGi fragment extending
the org.eclipse.jgit bundle. They are moved to a distinct internal
package in order to avoid split packages. This doesn't break public API
since these classes were already in an internal package before this
change.

Add a new feature org.eclipse.jgit.gpg.bc to enable installation. With
that users can now decide if they want to install it.

Attempts to sign a commit if org.eclipse.jgit.gpg.bc isn't available
will result in ServiceUnavailableException being thrown.

Bug: 559106
Change-Id: I42fd6c00002e17aa9a7be96ae434b538ea86ccf8
Also-by: Michael Dardis <git@md-5.net>
Signed-off-by: Michael Dardis <git@md-5.net>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Signed-off-by: David Ostrovsky <david@ostrovsky.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/org.eclipse.jgit.gpg.bc/BUILD b/org.eclipse.jgit.gpg.bc/BUILD
new file mode 100644
index 0000000000..4fe1e478cf
--- /dev/null
+++ b/org.eclipse.jgit.gpg.bc/BUILD
@@ -0,0 +1,21 @@
+load("@rules_java//java:defs.bzl", "java_library")
+
+package(default_visibility = ["//visibility:public"])
+
+SRCS = glob(["src/**/*.java"])
+
+RESOURCES = glob(["resources/**"])
+
+java_library(
+    name = "gpg-bc",
+    srcs = SRCS,
+    resource_strip_prefix = "org.eclipse.jgit.gpg.bc/resources",
+    resources = RESOURCES,
+    deps = [
+        "//lib:bcpg",
+        "//lib:bcpkix",
+        "//lib:bcprov",
+        "//lib:slf4j-api",
+        "//org.eclipse.jgit:jgit",
+    ],
+)