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python-bitshares/bitshares/instance.py at master · DMantis/python-bitshares · GitHub
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bitshares
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instance.py
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instance.py
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import
bitshares
as
bts
class
BlockchainInstance
():
""" This is a class that allows compatibility with previous
naming conventions
"""
def
__init__
(
self
,
*
args
,
**
kwargs
):
if
"bitshares_instance"
in
kwargs
and
kwargs
[
"bitshares_instance"
]:
self
.
blockchain
=
kwargs
[
"bitshares_instance"
]
elif
"blockchain_instance"
in
kwargs
and
kwargs
[
"blockchain_instance"
]:
self
.
blockchain
=
kwargs
[
"blockchain_instance"
]
else
:
self
.
blockchain
=
shared_blockchain_instance
()
@
property
def
bitshares
(
self
):
""" Alias for the specific blockchain
"""
return
self
.
blockchain
@
property
def
chain
(
self
):
""" Short form for blockchain (for the lazy)
"""
return
self
.
blockchain
class
SharedInstance
():
""" This class merely offers a singelton for the Blockchain Instance
"""
instance
=
None
config
=
{}
def
shared_blockchain_instance
():
""" This method will initialize ``SharedInstance.instance`` and return it.
The purpose of this method is to have offer single default
bitshares instance that can be reused by multiple classes.
"""
if
not
SharedInstance
.
instance
:
clear_cache
()
SharedInstance
.
instance
=
bts
.
BitShares
(
**
SharedInstance
.
config
)
return
SharedInstance
.
instance
def
set_shared_blockchain_instance
(
bitshares_instance
):
""" This method allows us to override default bitshares instance for all
users of ``SharedInstance.instance``.
:param bitshares.bitshares.BitShares bitshares_instance: BitShares
instance
"""
clear_cache
()
SharedInstance
.
instance
=
bitshares_instance
def
clear_cache
():
""" Clear Caches
"""
from
.
blockchainobject
import
BlockchainObject
BlockchainObject
.
clear_cache
()
def
set_shared_config
(
config
):
""" This allows to set a config that will be used when calling
``shared_bitshares_instance`` and allows to define the configuration
without requiring to actually create an instance
"""
assert
isinstance
(
config
,
dict
)
SharedInstance
.
config
.
update
(
config
)
# if one is already set, delete
if
SharedInstance
.
instance
:
clear_cache
()
SharedInstance
.
instance
=
None
shared_bitshares_instance
=
shared_blockchain_instance
set_shared_bitshares_instance
=
set_shared_blockchain_instance
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