[PATCH V2] Block.py: New methods: initiators, initiator_create and initiator_delete

[Gris Ge]

 * New method 'initiators':
    Usage:      Return a list of iSCSI initiator.
    Parameter:  NULL
    Return:     [{'initiator_wwn': initiator_wwn, 'wwn_type': wwn_type},]

 * New method 'initiator_create':
    Usage:      Create a initiator.
    Parameter:  initiator_wwn   # iSCSI IQN
    Return:     None

 * New method 'initiator_delete':
    Usage:      Delete a initiator along with masking information.
    Parameter:  initiator_wwn   # iSCSI IQN
    Return:     None

 * Tested via libstoragemgmt targetd plugin.

Changes in V2:

 * Fix typo.
 * Add method document as docstring.
 * Change initiator_create() to return None if succeeded.

Signed-off-by: Gris Ge <fge(a)redhat.com&gt;
---
 targetd/block.py | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/targetd/block.py b/targetd/block.py
index e8206b2..941c2a3 100644
--- a/targetd/block.py
+++ b/targetd/block.py
@@ -105,6 +105,9 @@ def initialize(config_dict):
         export_create=export_create,
         export_destroy=export_destroy,
         initiator_set_auth=initiator_set_auth,
+        initiators=initiators,
+        initiator_create=initiator_create,
+        initiator_delete=initiator_delete,
     )
 
 
@@ -277,6 +280,53 @@ def export_destroy(req, pool, vol, initiator_wwn):
     RTSRoot().save_to_file()
 
 
+def initiators(req):
+    """
+    Usage:      Return a list of iSCSI initiators.
+    Parameter:  NULL
+    Return:     [{'initiator_wwn': initiator_wwn, 'wwn_type':
'iqn'},]
+    """
+    try:
+        fm = FabricModule('iscsi')
+        t = Target(fm, target_name, mode='lookup')
+        tpg = TPG(t, 1, mode='lookup')
+    except RTSLibNotInCFS:
+        return []
+
+    initiators = []
+    for na in tpg.node_acls:
+        initiators.append(
+            dict(initiator_wwn=na.node_wwn, wwn_type=na.wwn_type))
+    return initiators
+
+
+def initiator_create(req, initiator_wwn):
+    """
+    Usage:      Create a initiator.
+    Parameter:  initiator_wwn   # iSCSI IQN
+    Return:     None
+    """
+    fm = FabricModule('iscsi')
+    t = Target(fm, target_name)
+    tpg = TPG(t, 1)
+    na = NodeACL(tpg, initiator_wwn)
+    RTSRoot().save_to_file()
+
+
+def initiator_delete(req, initiator_wwn):
+    """
+    Usage:      Delete a initiator along with its masking information.
+    Parameter:  initiator_wwn   # iSCSI IQN
+    Return:     None
+    """
+    fm = FabricModule('iscsi')
+    t = Target(fm, target_name)
+    tpg = TPG(t, 1)
+    na = NodeACL(tpg, initiator_wwn)
+    na.delete()
+    RTSRoot().save_to_file()
+
+
 def initiator_set_auth(req, initiator_wwn, in_user, in_pass, out_user,
                        out_pass):
     fm = FabricModule('iscsi')
-- 
1.8.3.1