[pve-devel] [RFC pve-storage 07/36] common: introduce common module

[Max Carrara <m.carrara@proxmox.com>]

This module's purpose is to provide shared functions, constants, etc.
for storage plugins and storage-related operations.

It also contains the `get_deprecation_warning` subroutine that makes
it easier to warn developers and/or plugin authors that a subroutine
will be removed in the future.

Signed-off-by: Max Carrara <m.carrara@proxmox.com>
---
 src/PVE/Storage/Common.pm       | 59 +++++++++++++++++++++++++++++++++
 src/PVE/Storage/Common/Makefile |  6 ++++
 src/PVE/Storage/Makefile        |  1 +
 3 files changed, 66 insertions(+)
 create mode 100644 src/PVE/Storage/Common.pm
 create mode 100644 src/PVE/Storage/Common/Makefile

diff --git a/src/PVE/Storage/Common.pm b/src/PVE/Storage/Common.pm
new file mode 100644
index 0000000..f828c8c
--- /dev/null
+++ b/src/PVE/Storage/Common.pm
@@ -0,0 +1,59 @@
+package PVE::Storage::Common;
+
+use strict;
+use warnings;
+
+use parent qw(Exporter);
+
+our @EXPORT_OK = qw(
+    get_deprecation_warning
+);
+
+=pod
+
+=head1 NAME
+
+PVE::Storage::Common - Shared functions and utilities for storage plugins and storage operations
+
+=head1 DESCRIPTION
+
+This module contains common subroutines that are mainly to be used by storage
+plugins. This module's submodules contain subroutines that are tailored towards
+a more specific or related purpose.
+
+Functions concerned with storage-related C<PVE::SectionConfig> things, helpers
+for the C<PVE::Storage> API can be found in this module. Functions that can't
+be grouped in a submodule can also be found here.
+
+=head1 SUBMODULES
+
+=over
+
+=back
+
+=head1 FUNCTIONS
+
+=cut
+
+=pod
+
+=head3 get_deprecation_warning
+
+    $warning = get_deprecation_warning($new_sub_name)
+
+Returns a string that warns that the subroutine that called C<get_deprecation_warning>
+will be removed in the future and notes that C<$new_sub_name> should be used
+instead.
+
+=cut
+
+sub get_deprecation_warning : prototype($) {
+    my ($new_sub_name) = @_;
+
+    my $calling_sub = (caller(1))[3];
+
+    return "The subroutine '$calling_sub' is deprecated and will be removed in "
+	. "the future. Please use '$new_sub_name' instead.";
+}
+
+1;
diff --git a/src/PVE/Storage/Common/Makefile b/src/PVE/Storage/Common/Makefile
new file mode 100644
index 0000000..0c4bba5
--- /dev/null
+++ b/src/PVE/Storage/Common/Makefile
@@ -0,0 +1,6 @@
+SOURCES = \
+
+
+.PHONY: install
+install:
+	for i in ${SOURCES}; do install -D -m 0644 $$i ${DESTDIR}${PERLDIR}/PVE/Storage/Common/$$i; done
diff --git a/src/PVE/Storage/Makefile b/src/PVE/Storage/Makefile
index d5cc942..2627062 100644
--- a/src/PVE/Storage/Makefile
+++ b/src/PVE/Storage/Makefile
@@ -18,5 +18,6 @@ SOURCES= \
 
 .PHONY: install
 install:
+	make -C Common install
 	for i in ${SOURCES}; do install -D -m 0644 $$i ${DESTDIR}${PERLDIR}/PVE/Storage/$$i; done
 	make -C LunCmd install
-- 
2.39.2



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