Python sqlalchemy.pool._refs() Examples

The following are 8 code examples of sqlalchemy.pool._refs(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module sqlalchemy.pool , or try the search function .
Example #1
Source File: assertions.py    From jbox with MIT License 5 votes vote down vote up 
def _assert_no_stray_pool_connections():
    global _STRAY_CONNECTION_FAILURES

    # lazy gc on cPython means "do nothing."  pool connections
    # shouldn't be in cycles, should go away.
    testutil.lazy_gc()

    # however, once in awhile, on an EC2 machine usually,
    # there's a ref in there.  usually just one.
    if pool._refs:

        # OK, let's be somewhat forgiving.
        _STRAY_CONNECTION_FAILURES += 1

        print("Encountered a stray connection in test cleanup: %s"
              % str(pool._refs))
        # then do a real GC sweep.   We shouldn't even be here
        # so a single sweep should really be doing it, otherwise
        # there's probably a real unreachable cycle somewhere.
        testutil.gc_collect()

    # if we've already had two of these occurrences, or
    # after a hard gc sweep we still have pool._refs?!
    # now we have to raise.
    if pool._refs:
        err = str(pool._refs)

        # but clean out the pool refs collection directly,
        # reset the counter,
        # so the error doesn't at least keep happening.
        pool._refs.clear()
        _STRAY_CONNECTION_FAILURES = 0
        assert False, "Stray connection refused to leave "\
            "after gc.collect(): %s" % err
    elif _STRAY_CONNECTION_FAILURES > 10:
        assert False, "Encountered more than 10 stray connections"
        _STRAY_CONNECTION_FAILURES = 0
Example #2
Source File: assertions.py    From Fluid-Designer with GNU General Public License v3.0 5 votes vote down vote up 
def _assert_no_stray_pool_connections():
    global _STRAY_CONNECTION_FAILURES

    # lazy gc on cPython means "do nothing."  pool connections
    # shouldn't be in cycles, should go away.
    testutil.lazy_gc()

    # however, once in awhile, on an EC2 machine usually,
    # there's a ref in there.  usually just one.
    if pool._refs:

        # OK, let's be somewhat forgiving.
        _STRAY_CONNECTION_FAILURES += 1

        print("Encountered a stray connection in test cleanup: %s"
              % str(pool._refs))
        # then do a real GC sweep.   We shouldn't even be here
        # so a single sweep should really be doing it, otherwise
        # there's probably a real unreachable cycle somewhere.
        testutil.gc_collect()

    # if we've already had two of these occurrences, or
    # after a hard gc sweep we still have pool._refs?!
    # now we have to raise.
    if pool._refs:
        err = str(pool._refs)

        # but clean out the pool refs collection directly,
        # reset the counter,
        # so the error doesn't at least keep happening.
        pool._refs.clear()
        _STRAY_CONNECTION_FAILURES = 0
        assert False, "Stray connection refused to leave "\
            "after gc.collect(): %s" % err
    elif _STRAY_CONNECTION_FAILURES > 10:
        assert False, "Encountered more than 10 stray connections"
        _STRAY_CONNECTION_FAILURES = 0
Example #3
Source File: assertions.py    From planespotter with MIT License 5 votes vote down vote up 
def _assert_no_stray_pool_connections():
    global _STRAY_CONNECTION_FAILURES

    # lazy gc on cPython means "do nothing."  pool connections
    # shouldn't be in cycles, should go away.
    testutil.lazy_gc()

    # however, once in awhile, on an EC2 machine usually,
    # there's a ref in there.  usually just one.
    if pool._refs:

        # OK, let's be somewhat forgiving.
        _STRAY_CONNECTION_FAILURES += 1

        print("Encountered a stray connection in test cleanup: %s"
              % str(pool._refs))
        # then do a real GC sweep.   We shouldn't even be here
        # so a single sweep should really be doing it, otherwise
        # there's probably a real unreachable cycle somewhere.
        testutil.gc_collect()

    # if we've already had two of these occurrences, or
    # after a hard gc sweep we still have pool._refs?!
    # now we have to raise.
    if pool._refs:
        err = str(pool._refs)

        # but clean out the pool refs collection directly,
        # reset the counter,
        # so the error doesn't at least keep happening.
        pool._refs.clear()
        _STRAY_CONNECTION_FAILURES = 0
        warnings.warn(
            "Stray connection refused to leave "
            "after gc.collect(): %s" % err)
    elif _STRAY_CONNECTION_FAILURES > 10:
        assert False, "Encountered more than 10 stray connections"
        _STRAY_CONNECTION_FAILURES = 0
Example #4
Source File: assertions.py    From pyRevit with GNU General Public License v3.0 5 votes vote down vote up 
def _assert_no_stray_pool_connections():
    global _STRAY_CONNECTION_FAILURES

    # lazy gc on cPython means "do nothing."  pool connections
    # shouldn't be in cycles, should go away.
    testutil.lazy_gc()

    # however, once in awhile, on an EC2 machine usually,
    # there's a ref in there.  usually just one.
    if pool._refs:

        # OK, let's be somewhat forgiving.
        _STRAY_CONNECTION_FAILURES += 1

        print("Encountered a stray connection in test cleanup: %s"
              % str(pool._refs))
        # then do a real GC sweep.   We shouldn't even be here
        # so a single sweep should really be doing it, otherwise
        # there's probably a real unreachable cycle somewhere.
        testutil.gc_collect()

    # if we've already had two of these occurrences, or
    # after a hard gc sweep we still have pool._refs?!
    # now we have to raise.
    if pool._refs:
        err = str(pool._refs)

        # but clean out the pool refs collection directly,
        # reset the counter,
        # so the error doesn't at least keep happening.
        pool._refs.clear()
        _STRAY_CONNECTION_FAILURES = 0
        warnings.warn(
            "Stray connection refused to leave "
            "after gc.collect(): %s" % err)
    elif _STRAY_CONNECTION_FAILURES > 10:
        assert False, "Encountered more than 10 stray connections"
        _STRAY_CONNECTION_FAILURES = 0
Example #5
Source File: assertions.py    From stdm with GNU General Public License v2.0 5 votes vote down vote up 
def _assert_no_stray_pool_connections():
    global _STRAY_CONNECTION_FAILURES

    # lazy gc on cPython means "do nothing."  pool connections
    # shouldn't be in cycles, should go away.
    testutil.lazy_gc()

    # however, once in awhile, on an EC2 machine usually,
    # there's a ref in there.  usually just one.
    if pool._refs:

        # OK, let's be somewhat forgiving.
        _STRAY_CONNECTION_FAILURES += 1

        print("Encountered a stray connection in test cleanup: %s"
              % str(pool._refs))
        # then do a real GC sweep.   We shouldn't even be here
        # so a single sweep should really be doing it, otherwise
        # there's probably a real unreachable cycle somewhere.
        testutil.gc_collect()

    # if we've already had two of these occurrences, or
    # after a hard gc sweep we still have pool._refs?!
    # now we have to raise.
    if pool._refs:
        err = str(pool._refs)

        # but clean out the pool refs collection directly,
        # reset the counter,
        # so the error doesn't at least keep happening.
        pool._refs.clear()
        _STRAY_CONNECTION_FAILURES = 0
        assert False, "Stray connection refused to leave "\
            "after gc.collect(): %s" % err
    elif _STRAY_CONNECTION_FAILURES > 10:
        assert False, "Encountered more than 10 stray connections"
        _STRAY_CONNECTION_FAILURES = 0
Example #6
Source File: assertions.py    From jarvis with GNU General Public License v2.0 5 votes vote down vote up 
def _assert_no_stray_pool_connections():
    global _STRAY_CONNECTION_FAILURES

    # lazy gc on cPython means "do nothing."  pool connections
    # shouldn't be in cycles, should go away.
    testutil.lazy_gc()

    # however, once in awhile, on an EC2 machine usually,
    # there's a ref in there.  usually just one.
    if pool._refs:

        # OK, let's be somewhat forgiving.
        _STRAY_CONNECTION_FAILURES += 1

        print("Encountered a stray connection in test cleanup: %s"
              % str(pool._refs))
        # then do a real GC sweep.   We shouldn't even be here
        # so a single sweep should really be doing it, otherwise
        # there's probably a real unreachable cycle somewhere.
        testutil.gc_collect()

    # if we've already had two of these occurrences, or
    # after a hard gc sweep we still have pool._refs?!
    # now we have to raise.
    if pool._refs:
        err = str(pool._refs)

        # but clean out the pool refs collection directly,
        # reset the counter,
        # so the error doesn't at least keep happening.
        pool._refs.clear()
        _STRAY_CONNECTION_FAILURES = 0
        warnings.warn(
            "Stray connection refused to leave "
            "after gc.collect(): %s" % err)
    elif _STRAY_CONNECTION_FAILURES > 10:
        assert False, "Encountered more than 10 stray connections"
        _STRAY_CONNECTION_FAILURES = 0
Example #7
Source File: assertions.py    From moviegrabber with GNU General Public License v3.0 5 votes vote down vote up 
def _assert_no_stray_pool_connections():
    global _STRAY_CONNECTION_FAILURES

    # lazy gc on cPython means "do nothing."  pool connections
    # shouldn't be in cycles, should go away.
    testutil.lazy_gc()

    # however, once in awhile, on an EC2 machine usually,
    # there's a ref in there.  usually just one.
    if pool._refs:

        # OK, let's be somewhat forgiving.  Increment a counter,
        # we'll allow a couple of these at most.
        _STRAY_CONNECTION_FAILURES += 1

        print("Encountered a stray connection in test cleanup: %s"
                        % str(pool._refs))
        # then do a real GC sweep.   We shouldn't even be here
        # so a single sweep should really be doing it, otherwise
        # there's probably a real unreachable cycle somewhere.
        testutil.gc_collect()

    # if we've already had two of these occurrences, or
    # after a hard gc sweep we still have pool._refs?!
    # now we have to raise.
    if _STRAY_CONNECTION_FAILURES >= 2 or pool._refs:
        err = str(pool._refs)

        # but clean out the pool refs collection directly,
        # reset the counter,
        # so the error doesn't at least keep happening.
        pool._refs.clear()
        _STRAY_CONNECTION_FAILURES = 0
        assert False, "Stray conections in cleanup: %s" % err
Example #8
Source File: assertions.py    From android_universal with MIT License 5 votes vote down vote up 
def _assert_no_stray_pool_connections():
    global _STRAY_CONNECTION_FAILURES

    # lazy gc on cPython means "do nothing."  pool connections
    # shouldn't be in cycles, should go away.
    testutil.lazy_gc()

    # however, once in awhile, on an EC2 machine usually,
    # there's a ref in there.  usually just one.
    if pool._refs:

        # OK, let's be somewhat forgiving.
        _STRAY_CONNECTION_FAILURES += 1

        print("Encountered a stray connection in test cleanup: %s"
              % str(pool._refs))
        # then do a real GC sweep.   We shouldn't even be here
        # so a single sweep should really be doing it, otherwise
        # there's probably a real unreachable cycle somewhere.
        testutil.gc_collect()

    # if we've already had two of these occurrences, or
    # after a hard gc sweep we still have pool._refs?!
    # now we have to raise.
    if pool._refs:
        err = str(pool._refs)

        # but clean out the pool refs collection directly,
        # reset the counter,
        # so the error doesn't at least keep happening.
        pool._refs.clear()
        _STRAY_CONNECTION_FAILURES = 0
        warnings.warn(
            "Stray connection refused to leave "
            "after gc.collect(): %s" % err)
    elif _STRAY_CONNECTION_FAILURES > 10:
        assert False, "Encountered more than 10 stray connections"
        _STRAY_CONNECTION_FAILURES = 0