Object-relational in-memory database layer based on LMDB
Home Page: https://crossbar.io/
License: MIT License
Object-relational in-memory database layer based on LMDB:
crossbarfx sets its minimum requirement of zlmdb to 19.5.1 but it seems its not yet released. Also crossbarfx master uses the API MapTimestampStringFlatBuffers which is only available in zlmdb 19.5.1
_TimestampUuidKeysMixin (see
Line 320 in aa27f47
np.datetime64 to keys in zlmdb tables: namely, we need to make sure to get big endian keys!zlmdb will not import on Python 3.8/Windows since time.clock has been removed. (time.clock has been deprecated since 3.3.) As far as I can tell time.perf_counter should be used for Python >= 3.3 esp since it works for Windows and Unix.
The import error:
Python 3.8.1 (tags/v3.8.1:1b293b6, Dec 18 2019, 23:11:46) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import zlmdb
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "...\zlmdb\zlmdb\__init__.py", line 102, in <module>
from ._transaction import Transaction, TransactionStats, walltime
File "...\zlmdb\zlmdb\_transaction.py", line 39, in <module>
walltime = time.clock
AttributeError: module 'time' has no attribute 'clock'see #11 (comment)
In cfc-functests:
2019-04-20T18:16:13+0200 2019-04-20T18:16:13+0200 [Container 28502] UserManager.create_organization(organization={}, details=CallDetails(registration=<autobahn.wamp.request.Registration object at 0x7f05f0631b38>, progress=None, caller=3159352971539072, caller_authid=superuser, caller_authrole=user, procedure=<crossbarfabriccenter.user.create_organization>, enc_algo=None, forward_for=None))
2019-04-20T18:16:13+0200 2019-04-20T18:16:13+0200 [Container 28502] new Organization object stored in database:
2019-04-20T18:16:13+0200
2019-04-20T18:16:13+0200 {'name': None,
2019-04-20T18:16:13+0200 'oid': '73c0a037-3c43-4ff2-a9f5-26b2a16a254f',
2019-04-20T18:16:13+0200 'otype': None,
2019-04-20T18:16:13+0200 'registered': None}
2019-04-20T18:16:13+0200
2019-04-20T18:16:13+0200 Event received on "cfc.user.on_organization_created" {'oid': '73c0a037-3c43-4ff2-a9f5-26b2a16a254f', 'name': None, 'otype': None, 'registered': None} EventDetails(subscription=Subscription(id=5731476024697015, is_active=True), publication=2344536254292897, publisher=None, publisher_authid=None, publisher_authrole=None, topic=<crossbarfabriccenter.user.on_organization_created>, retained=None, enc_algo=None, forward_for=None)
2019-04-20T18:16:13+0200 {'oid': '73c0a037-3c43-4ff2-a9f5-26b2a16a254f', 'name': None, 'otype': None, 'registered': None}
2019-04-20T18:16:13+0200 2019-04-20T18:16:13+0200 [Container 28502] Management API event <on_organization_created> published:
2019-04-20T18:16:13+0200 {'oid': '73c0a037-3c43-4ff2-a9f5-26b2a16a254f', 'name': None, 'otype': None, 'registered': None}
2019-04-20T18:16:13+0200 2019-04-20T18:16:13+0200 [Container 28502] UserManager.list_organizations(details=CallDetails(registration=<autobahn.wamp.request.Registration object at 0x7f05f0631c78>, progress=None, caller=3159352971539072, caller_authid=superuser, caller_authrole=user, procedure=<crossbarfabriccenter.user.list_organizations>, enc_algo=None, forward_for=None))
2019-04-20T18:16:13+0200 ['30928e6b-41d9-451a-840f-55edbc2aab60', '73c0a037-3c43-4ff2-a9f5-26b2a16a254f', '892f07f7-09d7-4ec9-8cec-731d6ad76206']
2019-04-20T18:16:13+0200 2019-04-20T18:16:13+0200 [Container 28502] UserManager.delete_organization(details=CallDetails(registration=<autobahn.wamp.request.Registration object at 0x7f05f0631ae8>, progress=None, caller=3159352971539072, caller_authid=superuser, caller_authrole=user, procedure=<crossbarfabriccenter.user.delete_organization>, enc_algo=None, forward_for=None))
2019-04-20T18:16:13+0200 2019-04-20T18:16:13+0200 [Container 28502] DomainController.onUserError(): "AssertionError: "
2019-04-20T18:16:13+0200 Traceback (most recent call last):
2019-04-20T18:16:13+0200 File "/home/oberstet/cpy373_1/lib/python3.7/site-packages/autobahn/wamp/protocol.py", line 1006, in onMessage
2019-04-20T18:16:13+0200 on_reply = txaio.as_future(endpoint.fn, *invoke_args, **invoke_kwargs)
2019-04-20T18:16:13+0200 File "/home/oberstet/cpy373_1/lib/python3.7/site-packages/txaio/tx.py", line 428, in as_future
2019-04-20T18:16:13+0200 return ensureDeferred(fun(*args, **kwargs))
2019-04-20T18:16:13+0200 File "/home/oberstet/cpy373_1/lib/python3.7/site-packages/twisted/internet/defer.py", line 911, in ensureDeferred
2019-04-20T18:16:13+0200 return _cancellableInlineCallbacks(coro)
2019-04-20T18:16:13+0200 File "/home/oberstet/cpy373_1/lib/python3.7/site-packages/twisted/internet/defer.py", line 1529, in _cancellableInlineCallbacks
2019-04-20T18:16:13+0200 _inlineCallbacks(None, g, status)
2019-04-20T18:16:13+0200 --- <exception caught here> ---
2019-04-20T18:16:13+0200 File "/home/oberstet/cpy373_1/lib/python3.7/site-packages/twisted/internet/defer.py", line 1418, in _inlineCallbacks
2019-04-20T18:16:13+0200 result = g.send(result)
2019-04-20T18:16:13+0200 File "/home/oberstet/scm/crossbario/crossbarfx/crossbarfx/master/node/user.py", line 198, in delete_organization
2019-04-20T18:16:13+0200 del self.schema.organizations[txn, oid]
2019-04-20T18:16:13+0200 File "/home/oberstet/cpy373_1/lib/python3.7/site-packages/zlmdb/_pmap.py", line 463, in __delitem__
2019-04-20T18:16:13+0200 _idx_key = struct.pack('>H', index.pmap._slot) + index.pmap._serialize_key(index.fkey(value))
2019-04-20T18:16:13+0200 File "/home/oberstet/cpy373_1/lib/python3.7/site-packages/zlmdb/_types.py", line 272, in _serialize_key
2019-04-20T18:16:13+0200 assert type(key) == six.text_type
2019-04-20T18:16:13+0200 builtins.AssertionError:
2019-04-20T18:16:13+0200
or
2019-04-20T18:16:20+0200 2019-04-20T18:16:20+0200 [Container 28563] WebClusterManager.create_webcluster(webcluster={'tcp_port': 8080, 'tcp_shared': True, 'tcp_interface': '127.0.0.1', 'tcp_backlog': 100, 'http_display_tracebacks': True}, details=CallDetails(registration=<autobahn.wamp.request.Registration object at 0x7fb7e55ff5e8>, progress=None, caller=6236535363633262, caller_authid=superuser, caller_authrole=owner, procedure=<crossbarfabriccenter.mrealm.webcluster.create_webcluster>, enc_algo=None, forward_for=None))
2019-04-20T18:16:20+0200 2019-04-20T18:16:20+0200 [Container 28563] new WebCluster object stored in database:
2019-04-20T18:16:20+0200
2019-04-20T18:16:20+0200 {'changed': None,
2019-04-20T18:16:20+0200 'http_access_log': None,
2019-04-20T18:16:20+0200 'http_client_timeout': None,
2019-04-20T18:16:20+0200 'http_display_tracebacks': True,
2019-04-20T18:16:20+0200 'http_hsts': None,
2019-04-20T18:16:20+0200 'http_hsts_max_age': None,
2019-04-20T18:16:20+0200 'name': None,
2019-04-20T18:16:20+0200 'oid': '8ae38960-f291-403a-a1dd-2f6b53dfc2c9',
2019-04-20T18:16:20+0200 'status': 'STOPPED',
2019-04-20T18:16:20+0200 'tcp_backlog': 100,
2019-04-20T18:16:20+0200 'tcp_interface': '127.0.0.1',
2019-04-20T18:16:20+0200 'tcp_port': 8080,
2019-04-20T18:16:20+0200 'tcp_shared': True,
2019-04-20T18:16:20+0200 'tcp_version': None,
2019-04-20T18:16:20+0200 'tls_ca_certificates': None,
2019-04-20T18:16:20+0200 'tls_certificate': None,
2019-04-20T18:16:20+0200 'tls_chain_certificates': None,
2019-04-20T18:16:20+0200 'tls_ciphers': None,
2019-04-20T18:16:20+0200 'tls_dhparam': None,
2019-04-20T18:16:20+0200 'tls_key': None}
2019-04-20T18:16:20+0200
2019-04-20T18:16:20+0200 2019-04-20T18:16:20+0200 [Container 28563] Management API event <on_webcluster_created> published:
2019-04-20T18:16:20+0200 {'oid': '8ae38960-f291-403a-a1dd-2f6b53dfc2c9', 'name': None, 'status': 'STOPPED', 'changed': None, 'tcp_version': None, 'tcp_port': 8080, 'tcp_shared': True, 'tcp_interface': '127.0.0.1', 'tcp_backlog': 100, 'tls_key': None, 'tls_certificate': None, 'tls_chain_certificates': None, 'tls_ca_certificates': None, 'tls_dhparam': None, 'tls_ciphers': None, 'http_client_timeout': None, 'http_hsts': None, 'http_hsts_max_age': None, 'http_access_log': None, 'http_display_tracebacks': True}
2019-04-20T18:16:20+0200 {'oid': '8ae38960-f291-403a-a1dd-2f6b53dfc2c9', 'name': None, 'status': 'STOPPED', 'changed': None, 'tcp_version': None, 'tcp_port': 8080, 'tcp_shared': True, 'tcp_interface': '127.0.0.1', 'tcp_backlog': 100, 'tls_key': None, 'tls_certificate': None, 'tls_chain_certificates': None, 'tls_ca_certificates': None, 'tls_dhparam': None, 'tls_ciphers': None, 'http_client_timeout': None, 'http_hsts': None, 'http_hsts_max_age': None, 'http_access_log': None, 'http_display_tracebacks': True}
2019-04-20T18:16:20+0200 2019-04-20T18:16:20+0200 [Container 28563] WebClusterManager.list_webclusters(details=CallDetails(registration=<autobahn.wamp.request.Registration object at 0x7fb7e55ff8b8>, progress=None, caller=6236535363633262, caller_authid=superuser, caller_authrole=owner, procedure=<crossbarfabriccenter.mrealm.webcluster.list_webclusters>, enc_algo=None, forward_for=None))
2019-04-20T18:16:20+0200 ['20087354-66ae-4c99-ab63-469c30aa1e7f', '8ae38960-f291-403a-a1dd-2f6b53dfc2c9']
2019-04-20T18:16:20+0200 2019-04-20T18:16:20+0200 [Container 28563] WebClusterManager.add_webcluster_service(webcluster_oid=8ae38960-f291-403a-a1dd-2f6b53dfc2c9, path=info, webservice={'type': 'nodeinfo'}, details=CallDetails(registration=<autobahn.wamp.request.Registration object at 0x7fb7e55ff598>, progress=None, caller=6236535363633262, caller_authid=superuser, caller_authrole=owner, procedure=<crossbarfabriccenter.mrealm.webcluster.add_webcluster_service>, enc_algo=None, forward_for=None))
2019-04-20T18:16:20+0200 2019-04-20T18:16:20+0200 [Container 28563] New WebService object stored in database:
2019-04-20T18:16:20+0200
2019-04-20T18:16:20+0200 {'oid': 'd424fa2a-2afb-4cba-b03e-8f8f56f6ac40',
2019-04-20T18:16:20+0200 'path': 'info',
2019-04-20T18:16:20+0200 'type': 'nodeinfo',
2019-04-20T18:16:20+0200 'webcluster_oid': '8ae38960-f291-403a-a1dd-2f6b53dfc2c9'}
2019-04-20T18:16:20+0200
2019-04-20T18:16:20+0200 2019-04-20T18:16:20+0200 [Container 28563] Management API event <on_webservice_added> published:
2019-04-20T18:16:20+0200 {'oid': 'd424fa2a-2afb-4cba-b03e-8f8f56f6ac40', 'webcluster_oid': '8ae38960-f291-403a-a1dd-2f6b53dfc2c9', 'path': 'info', 'type': 'nodeinfo'}
2019-04-20T18:16:20+0200 {'oid': 'd424fa2a-2afb-4cba-b03e-8f8f56f6ac40', 'webcluster_oid': '8ae38960-f291-403a-a1dd-2f6b53dfc2c9', 'path': 'info', 'type': 'nodeinfo'}
2019-04-20T18:16:20+0200 2019-04-20T18:16:20+0200 [Container 28563] WebClusterManager.add_webcluster_service(webcluster_oid=8ae38960-f291-403a-a1dd-2f6b53dfc2c9, path=temp, webservice={'type': 'static', 'directory': '/tmp', 'options': {'enable_directory_listing': True}}, details=CallDetails(registration=<autobahn.wamp.request.Registration object at 0x7fb7e55ff598>, progress=None, caller=6236535363633262, caller_authid=superuser, caller_authrole=owner, procedure=<crossbarfabriccenter.mrealm.webcluster.add_webcluster_service>, enc_algo=None, forward_for=None))
2019-04-20T18:16:20+0200 2019-04-20T18:16:20+0200 [Container 28563] New WebService object stored in database:
2019-04-20T18:16:20+0200
2019-04-20T18:16:20+0200 {'directory': '/tmp',
2019-04-20T18:16:20+0200 'oid': '925e08db-8906-4956-8a78-5b996a55fc52',
2019-04-20T18:16:20+0200 'options': {'enable_directory_listing': True},
2019-04-20T18:16:20+0200 'path': 'temp',
2019-04-20T18:16:20+0200 'type': 'static',
2019-04-20T18:16:20+0200 'webcluster_oid': '8ae38960-f291-403a-a1dd-2f6b53dfc2c9'}
2019-04-20T18:16:20+0200
2019-04-20T18:16:20+0200 2019-04-20T18:16:20+0200 [Container 28563] Management API event <on_webservice_added> published:
2019-04-20T18:16:20+0200 {'oid': '925e08db-8906-4956-8a78-5b996a55fc52', 'directory': '/tmp', 'options': {'enable_directory_listing': True}, 'webcluster_oid': '8ae38960-f291-403a-a1dd-2f6b53dfc2c9', 'path': 'temp', 'type': 'static'}
2019-04-20T18:16:20+0200 {'oid': '925e08db-8906-4956-8a78-5b996a55fc52', 'directory': '/tmp', 'options': {'enable_directory_listing': True}, 'webcluster_oid': '8ae38960-f291-403a-a1dd-2f6b53dfc2c9', 'path': 'temp', 'type': 'static'}
2019-04-20T18:16:20+0200 2019-04-20T18:16:20+0200 [Container 28563] WebClusterManager.delete_webcluster(details=CallDetails(registration=<autobahn.wamp.request.Registration object at 0x7fb7e55ff638>, progress=None, caller=6236535363633262, caller_authid=superuser, caller_authrole=owner, procedure=<crossbarfabriccenter.mrealm.webcluster.delete_webcluster>, enc_algo=None, forward_for=None))
2019-04-20T18:16:20+0200 2019-04-20T18:16:20+0200 [Container 28563] MrealmController.onUserError(): "AssertionError: "
2019-04-20T18:16:20+0200 Traceback (most recent call last):
2019-04-20T18:16:20+0200 File "/home/oberstet/cpy373_1/lib/python3.7/site-packages/autobahn/wamp/protocol.py", line 1006, in onMessage
2019-04-20T18:16:20+0200 on_reply = txaio.as_future(endpoint.fn, *invoke_args, **invoke_kwargs)
2019-04-20T18:16:20+0200 File "/home/oberstet/cpy373_1/lib/python3.7/site-packages/txaio/tx.py", line 428, in as_future
2019-04-20T18:16:20+0200 return ensureDeferred(fun(*args, **kwargs))
2019-04-20T18:16:20+0200 File "/home/oberstet/cpy373_1/lib/python3.7/site-packages/twisted/internet/defer.py", line 911, in ensureDeferred
2019-04-20T18:16:20+0200 return _cancellableInlineCallbacks(coro)
2019-04-20T18:16:20+0200 File "/home/oberstet/cpy373_1/lib/python3.7/site-packages/twisted/internet/defer.py", line 1529, in _cancellableInlineCallbacks
2019-04-20T18:16:20+0200 _inlineCallbacks(None, g, status)
2019-04-20T18:16:20+0200 --- <exception caught here> ---
2019-04-20T18:16:20+0200 File "/home/oberstet/cpy373_1/lib/python3.7/site-packages/twisted/internet/defer.py", line 1418, in _inlineCallbacks
2019-04-20T18:16:20+0200 result = g.send(result)
2019-04-20T18:16:20+0200 File "/home/oberstet/scm/crossbario/crossbarfx/crossbarfx/master/mrealm/webcluster.py", line 255, in delete_webcluster
2019-04-20T18:16:20+0200 del self.schema.webclusters[txn, oid]
2019-04-20T18:16:20+0200 File "/home/oberstet/cpy373_1/lib/python3.7/site-packages/zlmdb/_pmap.py", line 463, in __delitem__
2019-04-20T18:16:20+0200 _idx_key = struct.pack('>H', index.pmap._slot) + index.pmap._serialize_key(index.fkey(value))
2019-04-20T18:16:20+0200 File "/home/oberstet/cpy373_1/lib/python3.7/site-packages/zlmdb/_types.py", line 272, in _serialize_key
2019-04-20T18:16:20+0200 assert type(key) == six.text_type
2019-04-20T18:16:20+0200 builtins.AssertionError:
2019-04-20T18:16:20+0200
I am trying to install crossbar.io (20.7.1) using an internal pypi server. zlmdb fails to install because of missing pytest-runner pkg, it should not fail as you can see in logs that internal pypi server has access to pytest-runner==5.2 so as a part of the requirements-min.txt, crossbar.io install should install zlmdb 20.4.1 as well. Linux server where I am trying to install crossbar.io is cutoff from the internet
(venv) [user@redhat8 crossbar]$ pip3 install -r requirements-min.txt --index-url=http://internal_pypi_server:9700 --trusted-host internal_pypi_server
Ignoring twisted: markers 'sys_platform == "darwin"' don't match your environment
Ignoring twisted: markers 'sys_platform == "win32"' don't match your environment
Collecting pytest-runner==5.2 (from -r requirements-min.txt (line 1))
Downloading http://internal_pypi_server:9700/packages/pytest_runner-5.2-py2.py3-none-any.whl
Collecting zlmdb==20.4.1 (from -r requirements-min.txt (line 2))
Downloading http://internal_pypi_server:9700/packages/zlmdb-20.4.1.tar.gz (129kB)
100% |████████████████████████████████| 133kB 33.7MB/s
Complete output from command python setup.py egg_info:
Download error on https://pypi.org/simple/pytest-runner/: [Errno 101] Network is unreachable -- Some packages may not be found!
Couldn't find index page for 'pytest-runner' (maybe misspelled?)
Download error on https://pypi.org/simple/: [Errno 101] Network is unreachable -- Some packages may not be found!
No local packages or working download links found for pytest-runner
....SNIP....
distutils.errors.DistutilsError: Could not find suitable distribution for Requirement.parse('pytest-runner')
----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-5w4ezhz4/zlmdb/
requirements-min.txt
pytest-runner==5.2
zlmdb==20.4.1
setuptools==53.0.0
setuptools_scm==5.0.1
....SNIP...
I can't find any demo examples for zlmdb
Searched the github source
Paste the command(s) you ran and the output.
If there was a crash, please include the traceback here.
It might be good to create a /examples directory to the repo, and populate it with examples ranging from the simplest and most basic to examples of moderate complexity.
Currently, we only have
Line 388 in a657c3b
It does not give record counts for all (zlmdb) tables ..
The requirement numpy==1.15.4 seems a little narrow. Could this potentially be relaxed?
It should be possible to watch for all keys using
keys = [KeySet(b'm', prefix=True)}when providing a filter for etcd.watch(keys, on_change).
However, this triggers a bug:
Traceback (most recent call last):
File "/home/oberstet/cpy370_5/lib/python3.7/site-packages/twisted/internet/defer.py", line 460, in callback
self._startRunCallbacks(result)
File "/home/oberstet/cpy370_5/lib/python3.7/site-packages/twisted/internet/defer.py", line 568, in _startRunCallbacks
self._runCallbacks()
File "/home/oberstet/cpy370_5/lib/python3.7/site-packages/twisted/internet/defer.py", line 654, in _runCallbacks
current.result = callback(current.result, *args, **kw)
File "/home/oberstet/cpy370_5/lib/python3.7/site-packages/twisted/internet/defer.py", line 1475, in gotResult
_inlineCallbacks(r, g, status)
--- <exception caught here> ---
File "/home/oberstet/cpy370_5/lib/python3.7/site-packages/twisted/internet/defer.py", line 1418, in _inlineCallbacks
result = g.send(result)
File "tests/test_etcd.py", line 18, in main
d = etcd.watch(keys, on_change)
File "/home/oberstet/scm/crossbario/txaio-etcd/txaioetcd/_client_tx.py", line 409, in watch
d = self._start_watching(keys, on_watch, filters, start_revision, return_previous)
File "/home/oberstet/scm/crossbario/txaio-etcd/txaioetcd/_client_tx.py", line 440, in _start_watching
range_end = _increment_last_byte(key.key)
File "/home/oberstet/scm/crossbario/txaio-etcd/txaioetcd/_types.py", line 47, in _increment_last_byte
s[-1] = s[-1] + 1
builtins.IndexError: bytearray index out of rangeThe default DB mode in zLMDB at some point was changed to writemap=True - which is great! BUT: that also meant that map_size bytes are immediately used on disk - which is also cool - BUT: that in turn meant that the free space checker in the master node DB fails badly
2022-03-01T16:42:35+0100 [Container 36734] DomainController global database opened [dbpath=/home/oberstet/scm/typedefint/crossbar-cluster/stack/.recordevolution/master/.crossbar/.db-controller, maxsize=134217728]
2022-03-01T16:42:35+0100 [Container 36734] SUPERUSER already exists in database (oid=c22c8f64-b193-444e-a15d-0675d8b52990)
2022-03-01T16:42:35+0100 [Container 36734] Default management realm enabled
2022-03-01T16:42:35+0100 [Container 36734] ok, default management realm already exists (18cff99c-216d-40b4-92d7-bc8aa3844da9)
2022-03-01T16:42:35+0100 [Container 36734] Watch-to-pair enabled
2022-03-01T16:42:35+0100 [Container 36734] Environment variable "$CROSSBARFX_WATCH_TO_PAIR" not set - needed in configuration "auto_default_mrealm.watch_to_pair"
2022-03-01T16:42:35+0100 [Container 36734] skipping to watch "None" for node auto-pairing - not a directory!
2022-03-01T16:42:35+0100 [Container 36734] Global master database full! Initiating EMERGENCY SHUTDOWN .. [0.0% free]
Line 403 in 35139da
eg sth better as, roughly like:
For example, see https://github.com/crossbario/crossbarfx/issues/308#issuecomment-495584520:
@table('256a071f-5aeb-47f3-8786-97cd8281bdb7', build=MNodeLog.build, cast=MNodeLog.cast)
class MNodeLogs(MapTimestampUuidFlatBuffers):
"""
Persisted managed node heartbeat log records.
Map :class:`zlmdb.MapTimestampUuidFlatBuffers` from ``(timestamp, node_id)`` to :class:`crossbarfx.cfxdb.logs.MNodeLog`
"""This is the part to be fixed here (touching self.schema.mnode_logs):
with self.db.begin() as txn2:
self.log.debug('RECORDS in mnode_logs: {cnt}', cnt=self.schema.mnode_logs.count(txn2))
for ts, _node_id in sorted(
self.schema.mnode_logs.select(
txn2,
# FIXME: using the following breaks stuff (*)
# from_key=(ts_prev_min, node_id),
# to_key=(ts_prev_min_to, node_id),
return_values=False)):
# FIXME: see above (*)
if ts >= ts_prev_min and ts < ts_prev_min_to:
lrec = self.schema.mnode_logs[txn2, (ts, _node_id)]
res['routers'] += lrec.routers
res['containers'] += lrec.containers
res['guests'] += lrec.guests
res['proxies'] += lrec.proxies
res['marketmakers'] += lrec.marketmakersHello, it seems to be that zlmdb is exporting the flatbuffers package.
I say this because while packaging zlmdb, I see it installing a flatbuffers directory into place in .../site-packages, and also per this line here in 20.8.1's setup.py:
Line 62 in 1eabd29
This is causing issues when trying to install the official flatbuffers package separately.
I'm just trying to understand if this is indeed the case, and if so, why it would be necessary?
watch() etcd for key-value changes and mirror those in a local zlmdb.compare() guard for the etcd transaction is checking that none of the data touched in etcd has been modified since the transaction began (using object versions)note: the issue here might supersede crossbario/txaio-etcd#3
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