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storage: rewrite slot API, now use testv_and_readv_and_writev or readv
This commit is contained in:
Brian Warner
parent
95a3da92fe
commit
e08b091d9f
@ -84,49 +84,19 @@ class RIBucketReader(RemoteInterface):
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TestVector = ListOf(TupleOf(int, int, str, str))
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# elements are (offset, length, operator, specimen)
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# operator is one of "lt, le, eq, ne, ge, gt, nop"
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# operator is one of "lt, le, eq, ne, ge, gt"
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# nop always passes and is used to fetch data while writing.
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# you should use length==len(specimen) for everything except nop
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DataVector = ListOf(TupleOf(int, ShareData))
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# (offset, data). This limits us to 30 writes of 1MiB each per call
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TestAndWriteVectorsForShares = DictOf(int,
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TupleOf(TestVector,
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DataVector,
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ChoiceOf(None, int))) # new_length
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ReadVector = ListOf(TupleOf(int, int))
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TestResults = ListOf(str)
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ReadData = ListOf(ShareData)
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# returns data[offset:offset+length] for each element of TestVector
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class RIMutableSlot(RemoteInterface):
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def testv_and_writev(write_enabler=Hash,
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testv=TestVector,
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datav=DataVector,
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new_length=ChoiceOf(None, int)):
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"""General-purpose test-and-set operation for mutable slots. Perform
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the given comparisons. If they all pass, then apply the write vector.
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If new_length is not None, use it to set the size of the container.
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This can be used to pre-allocate space for a series of upcoming
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writes, or truncate existing data. If the container is growing,
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new_length will be applied before datav. If the container is
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shrinking, it will be applied afterwards.
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Return the old data that was used for the comparisons.
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The boolean return value is True if the write vector was applied,
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false if not.
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If the write_enabler is wrong, this will raise BadWriteEnablerError.
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To enable share migration, the exception will have the nodeid used
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for the old write enabler embedded in it, in the following string::
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The write enabler was recorded by nodeid '%s'.
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"""
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return TupleOf(bool, TestResults)
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def read(offset=int, length=int):
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return ShareData
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def get_length():
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return int
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class RIStorageServer(RemoteInterface):
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def allocate_buckets(storage_index=StorageIndex,
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renew_secret=LeaseRenewSecret,
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@ -170,13 +140,27 @@ class RIStorageServer(RemoteInterface):
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return DictOf(int, RIBucketReader, maxKeys=MAX_BUCKETS)
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def allocate_mutable_slot(storage_index=StorageIndex,
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write_enabler=Hash,
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renew_secret=LeaseRenewSecret,
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cancel_secret=LeaseCancelSecret,
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sharenums=SetOf(int, maxLength=MAX_BUCKETS),
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allocated_size=int):
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"""
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def slot_readv(storage_index=StorageIndex,
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shares=ListOf(int), readv=ReadVector):
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"""Read a vector from the numbered shares associated with the given
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storage index. An empty shares list means to return data from all
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known shares. Returns a dictionary with one key per share."""
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return DictOf(int, DataVector) # shnum -> results
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def slot_testv_and_readv_and_writev(storage_index=StorageIndex,
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secrets=TupleOf(Hash, Hash, Hash),
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tw_vectors=TestAndWriteVectorsForShares,
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r_vector=ReadVector,
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):
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"""General-purpose test-and-set operation for mutable slots. Perform
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a bunch of comparisons against the existing shares. If they all pass,
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then apply a bunch of write vectors to those shares. Then use the
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read vectors to extract data from all the shares and return the data.
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This method is, um, large. The goal is to allow clients to update all
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the shares associated with a mutable file in a single round trip.
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@param storage_index: the index of the bucket to be created or
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increfed.
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@param write_enabler: a secret that is stored along with the slot.
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@ -188,32 +172,51 @@ class RIStorageServer(RemoteInterface):
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stored for later comparison by the server. Each
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server is given a different secret.
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@param cancel_secret: Like renew_secret, but protects bucket decref.
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@param sharenums: these are the share numbers (probably between 0 and
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99) that the sender is proposing to store on this
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server.
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@param allocated_size: all shares will pre-allocate this many bytes.
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Use this to a) confirm that you can claim as
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much space as you want before you actually
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send the data, and b) reduce the disk-IO cost
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of doing incremental writes.
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@return: dict mapping sharenum to slot. The return value may include
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more sharenums than asked, if some shares already existed.
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New leases are added for all
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shares.
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The 'secrets' argument is a tuple of (write_enabler, renew_secret,
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cancel_secret). The first is required to perform any write. The
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latter two are used when allocating new shares. To simply acquire a
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new lease on existing shares, use an empty testv and an empty writev.
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Each share can have a separate test vector (i.e. a list of
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comparisons to perform). If all vectors for all shares pass, then all
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writes for all shares are recorded. Each comparison is a 4-tuple of
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(offset, length, operator, specimen), which effectively does a
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read(offset, length) and then compares the result against the
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specimen using the given equality/inequality operator. Reads from the
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end of the container are truncated, and missing shares behave like
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empty ones, so to assert that a share doesn't exist (for use when
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creating a new share), use (0, 1, 'eq', '').
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The write vector will be applied to the given share, expanding it if
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necessary. A write vector applied to a share number that did not
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exist previously will cause that share to be created.
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Each write vector is accompanied by a 'new_length' argument. If
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new_length is not None, use it to set the size of the container. This
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can be used to pre-allocate space for a series of upcoming writes, or
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truncate existing data. If the container is growing, new_length will
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be applied before datav. If the container is shrinking, it will be
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applied afterwards.
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The read vector is used to extract data from all known shares,
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*before* any writes have been applied. The same vector is used for
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all shares. This captures the state that was tested by the test
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vector.
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This method returns two values: a boolean and a dict. The boolean is
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True if the write vectors were applied, False if not. The dict is
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keyed by share number, and each value contains a list of strings, one
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for each element of the read vector.
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If the write_enabler is wrong, this will raise BadWriteEnablerError.
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To enable share migration, the exception will have the nodeid used
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for the old write enabler embedded in it, in the following string::
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The write enabler was recorded by nodeid '%s'.
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"""
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return DictOf(int, RIMutableSlot, maxKeys=MAX_BUCKETS)
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def get_mutable_slot(storage_index=StorageIndex):
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"""This returns an empty dictionary if the server has no shares
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of the slot mentioned."""
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return DictOf(int, RIMutableSlot, maxKeys=MAX_BUCKETS)
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def readv_slots(storage_index=StorageIndex, readv=ReadVector):
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"""Read a vector from all shares associated with the given storage
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index. Returns a dictionary with one key per share."""
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return DictOf(int, DataVector) # shnum -> results
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return TupleOf(bool, DictOf(int, ReadData))
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class IStorageBucketWriter(Interface):
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def put_block(segmentnum=int, data=ShareData):
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@ -8,7 +8,7 @@ from twisted.internet import defer
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from zope.interface import implements
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from allmydata.interfaces import RIStorageServer, RIBucketWriter, \
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RIBucketReader, IStorageBucketWriter, IStorageBucketReader, HASH_SIZE, \
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BadWriteEnablerError, RIMutableSlot
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BadWriteEnablerError
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from allmydata.util import fileutil, idlib, mathutil
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from allmydata.util.assertutil import precondition, _assert
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@ -240,13 +240,7 @@ class BucketReader(Referenceable):
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assert struct.calcsize("L"), 4
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assert struct.calcsize("Q"), 8
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class MutableShareFile(Referenceable):
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# note: at any given time, there should only be a single instance of this
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# class per filename. More than one is likely to corrupt the container,
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# because of state we cache in instance variables. This requires the
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# StorageServer to use a WeakValueDictionary, indexed by filename. This
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# could be improved by cacheing less and doing more IO.
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implements(RIMutableSlot)
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class MutableShareFile:
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DATA_LENGTH_OFFSET = struct.calcsize(">32s32s32s")
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EXTRA_LEASE_OFFSET = DATA_LENGTH_OFFSET + 8
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@ -548,12 +542,6 @@ class MutableShareFile(Referenceable):
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assert magic == self.MAGIC
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return (write_enabler, write_enabler_nodeid)
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def remote_read(self, offset, length):
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f = open(self.home, 'rb')
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data = self._read_share_data(f, offset, length)
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f.close()
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return data
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def readv(self, readv):
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datav = []
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f = open(self.home, 'rb')
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@ -562,36 +550,37 @@ class MutableShareFile(Referenceable):
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f.close()
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return datav
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def remote_get_length(self):
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f = open(self.home, 'rb')
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data_length = self._read_data_length(f)
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f.close()
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return data_length
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# def remote_get_length(self):
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# f = open(self.home, 'rb')
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# data_length = self._read_data_length(f)
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# f.close()
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# return data_length
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def remote_testv_and_writev(self, write_enabler, testv, datav, new_length):
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def check_write_enabler(self, write_enabler):
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f = open(self.home, 'rb+')
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(real_write_enabler, write_enabler_nodeid) = \
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self._read_write_enabler_and_nodeid(f)
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f.close()
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if write_enabler != real_write_enabler:
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# accomodate share migration by reporting the nodeid used for the
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# old write enabler.
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f.close()
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msg = "The write enabler was recorded by nodeid '%s'." % \
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(idlib.b2a(write_enabler_nodeid),)
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raise BadWriteEnablerError(msg)
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# check testv
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test_results_v = []
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test_failed = False
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def check_testv(self, testv):
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test_good = True
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f = open(self.home, 'rb+')
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for (offset, length, operator, specimen) in testv:
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data = self._read_share_data(f, offset, length)
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test_results_v.append(data)
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if not self.compare(data, operator, specimen):
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test_failed = True
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if test_failed:
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f.close()
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return (False, test_results_v)
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# now apply the write vector
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test_good = False
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break
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f.close()
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return test_good
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def writev(self, datav, new_length):
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f = open(self.home, 'rb+')
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for (offset, data) in datav:
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self._write_share_data(f, offset, data)
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if new_length is not None:
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@ -599,12 +588,36 @@ class MutableShareFile(Referenceable):
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f.seek(self.DATA_LENGTH_OFFSET)
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f.write(struct.pack(">Q", new_length))
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f.close()
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return (True, test_results_v)
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def compare(self, a, op, b):
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assert op in ("nop", "lt", "le", "eq", "ne", "ge", "gt")
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if op == "nop":
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return True
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assert op in ("lt", "le", "eq", "ne", "ge", "gt")
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if op == "lt":
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return a < b
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if op == "le":
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return a <= b
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if op == "eq":
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return a == b
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if op == "ne":
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return a != b
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if op == "ge":
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return a >= b
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if op == "gt":
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return a > b
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# never reached
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class EmptyShare:
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def check_testv(self, testv):
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test_good = True
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for (offset, length, operator, specimen) in testv:
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data = ""
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if not self.compare(data, operator, specimen):
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test_good = False
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break
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return test_good
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def compare(self, a, op, b):
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assert op in ("lt", "le", "eq", "ne", "ge", "gt")
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if op == "lt":
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return a < b
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if op == "le":
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@ -842,51 +855,83 @@ class StorageServer(service.MultiService, Referenceable):
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except StopIteration:
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return iter([])
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def remote_allocate_mutable_slot(self, storage_index,
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write_enabler,
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renew_secret, cancel_secret,
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sharenums,
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allocated_size):
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my_nodeid = self.my_nodeid
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sharenums = set(sharenums)
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shares = self.remote_get_mutable_slot(storage_index)
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existing_shnums = set(shares.keys())
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si_s = idlib.b2a(storage_index)
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bucketdir = os.path.join(self.sharedir, si_s)
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fileutil.make_dirs(bucketdir)
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for shnum in (sharenums - existing_shnums):
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filename = os.path.join(bucketdir, "%d" % shnum)
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shares[shnum] = create_mutable_sharefile(filename, my_nodeid,
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write_enabler)
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# update the lease on everything
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ownerid = 1 # TODO
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expire_time = time.time() + 31*24*60*60 # one month
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anid = my_nodeid
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lease_info = (ownerid, expire_time, renew_secret, cancel_secret, anid)
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for share in shares.values():
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share.add_or_renew_lease(lease_info)
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return shares
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def remote_get_mutable_slot(self, storage_index):
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"""This returns an empty dictionary if the server has no shares
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of the slot mentioned."""
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def remote_slot_testv_and_readv_and_writev(self, storage_index,
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secrets,
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test_and_write_vectors,
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read_vector):
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si_s = idlib.b2a(storage_index)
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(write_enabler, renew_secret, cancel_secret) = secrets
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# shares exist if there is a file for them
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bucketdir = os.path.join(self.sharedir, si_s)
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if not os.path.isdir(bucketdir):
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return {}
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slots = {}
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for sharenum_s in os.listdir(bucketdir):
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try:
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sharenum = int(sharenum_s)
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except ValueError:
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continue
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filename = os.path.join(bucketdir, sharenum_s)
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slots[sharenum] = MutableShareFile(filename)
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return slots
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shares = {}
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if os.path.isdir(bucketdir):
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for sharenum_s in os.listdir(bucketdir):
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try:
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sharenum = int(sharenum_s)
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except ValueError:
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continue
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filename = os.path.join(bucketdir, sharenum_s)
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msf = MutableShareFile(filename)
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msf.check_write_enabler(write_enabler)
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shares[sharenum] = msf
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# write_enabler is good for all existing shares.
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def remote_readv_slots(self, storage_index, readv):
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# Now evaluate test vectors.
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testv_is_good = True
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for sharenum in test_and_write_vectors:
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(testv, datav, new_length) = test_and_write_vectors[sharenum]
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if sharenum in shares:
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if not shares[sharenum].check_testv(testv):
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testv_is_good = False
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break
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else:
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# compare the vectors against an empty share, in which all
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# reads return empty strings.
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if not EmptyShare().check_testv(testv):
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testv_is_good = False
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break
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# now gather the read vectors, before we do any writes
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read_data = {}
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for sharenum, share in shares.items():
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read_data[sharenum] = share.readv(read_vector)
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if testv_is_good:
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# now apply the write vectors
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for sharenum in test_and_write_vectors:
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(testv, datav, new_length) = test_and_write_vectors[sharenum]
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if sharenum not in shares:
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# allocate a new share
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allocated_size = 2000 # arbitrary, really
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share = self._allocate_slot_share(bucketdir, secrets,
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sharenum,
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allocated_size,
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owner_num=0)
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shares[sharenum] = share
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shares[sharenum].writev(datav, new_length)
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# and update the leases on all shares
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ownerid = 1 # TODO
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expire_time = time.time() + 31*24*60*60 # one month
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my_nodeid = self.my_nodeid
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anid = my_nodeid
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lease_info = (ownerid, expire_time, renew_secret, cancel_secret,
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anid)
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for share in shares.values():
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share.add_or_renew_lease(lease_info)
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# all done
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return (testv_is_good, read_data)
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def _allocate_slot_share(self, bucketdir, secrets, sharenum,
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allocated_size, owner_num=0):
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(write_enabler, renew_secret, cancel_secret) = secrets
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my_nodeid = self.my_nodeid
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fileutil.make_dirs(bucketdir)
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filename = os.path.join(bucketdir, "%d" % sharenum)
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share = create_mutable_sharefile(filename, my_nodeid, write_enabler)
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return share
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def remote_slot_readv(self, storage_index, shares, readv):
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si_s = idlib.b2a(storage_index)
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# shares exist if there is a file for them
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bucketdir = os.path.join(self.sharedir, si_s)
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@ -898,9 +943,10 @@ class StorageServer(service.MultiService, Referenceable):
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sharenum = int(sharenum_s)
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except ValueError:
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continue
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filename = os.path.join(bucketdir, sharenum_s)
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msf = MutableShareFile(filename)
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datavs[sharenum] = msf.readv(readv)
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if sharenum in shares or not shares:
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filename = os.path.join(bucketdir, sharenum_s)
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msf = MutableShareFile(filename)
|
||||
datavs[sharenum] = msf.readv(readv)
|
||||
return datavs
|
||||
|
||||
|
||||
|
||||
@ -9,7 +9,7 @@ import itertools
|
||||
from allmydata import interfaces
|
||||
from allmydata.util import fileutil, hashutil, idlib
|
||||
from allmydata.storage import BucketWriter, BucketReader, \
|
||||
WriteBucketProxy, ReadBucketProxy, StorageServer
|
||||
WriteBucketProxy, ReadBucketProxy, StorageServer, MutableShareFile
|
||||
from allmydata.interfaces import BadWriteEnablerError
|
||||
|
||||
class Bucket(unittest.TestCase):
|
||||
@ -476,228 +476,275 @@ class MutableServer(unittest.TestCase):
|
||||
write_enabler = self.write_enabler(we_tag)
|
||||
renew_secret = self.renew_secret(lease_tag)
|
||||
cancel_secret = self.cancel_secret(lease_tag)
|
||||
return ss.remote_allocate_mutable_slot(storage_index,
|
||||
write_enabler,
|
||||
renew_secret, cancel_secret,
|
||||
sharenums, size)
|
||||
rstaraw = ss.remote_slot_testv_and_readv_and_writev
|
||||
testandwritev = dict( [ (shnum, ([], [], None) )
|
||||
for shnum in sharenums ] )
|
||||
readv = []
|
||||
rc = rstaraw(storage_index,
|
||||
(write_enabler, renew_secret, cancel_secret),
|
||||
testandwritev,
|
||||
readv)
|
||||
(did_write, readv_data) = rc
|
||||
self.failUnless(did_write)
|
||||
self.failUnless(isinstance(readv_data, dict))
|
||||
self.failUnlessEqual(len(readv_data), 0)
|
||||
|
||||
def test_allocate(self):
|
||||
ss = self.create("test_allocate")
|
||||
shares = self.allocate(ss, "si1", "we1", self._secret.next(),
|
||||
self.allocate(ss, "si1", "we1", self._secret.next(),
|
||||
set([0,1,2]), 100)
|
||||
self.failUnlessEqual(len(shares), 3)
|
||||
self.failUnlessEqual(set(shares.keys()), set([0,1,2]))
|
||||
shares2 = ss.remote_get_mutable_slot("si1")
|
||||
self.failUnlessEqual(len(shares2), 3)
|
||||
self.failUnlessEqual(set(shares2.keys()), set([0,1,2]))
|
||||
|
||||
s0 = shares[0]
|
||||
self.failUnlessEqual(s0.remote_read(0, 10), "")
|
||||
self.failUnlessEqual(s0.remote_read(100, 10), "")
|
||||
read = ss.remote_slot_readv
|
||||
self.failUnlessEqual(read("si1", [0], [(0, 10)]),
|
||||
{0: [""]})
|
||||
self.failUnlessEqual(read("si1", [], [(0, 10)]),
|
||||
{0: [""], 1: [""], 2: [""]})
|
||||
self.failUnlessEqual(read("si1", [0], [(100, 10)]),
|
||||
{0: [""]})
|
||||
|
||||
# try writing to one
|
||||
WE = self.write_enabler("we1")
|
||||
secrets = ( self.write_enabler("we1"),
|
||||
self.renew_secret("we1"),
|
||||
self.cancel_secret("we1") )
|
||||
data = "".join([ ("%d" % i) * 10 for i in range(10) ])
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[],
|
||||
[(0, data),],
|
||||
new_length=None)
|
||||
self.failUnlessEqual(answer, (True, []))
|
||||
write = ss.remote_slot_testv_and_readv_and_writev
|
||||
answer = write("si1", secrets,
|
||||
{0: ([], [(0,data)], None)},
|
||||
[])
|
||||
self.failUnlessEqual(answer, (True, {0:[],1:[],2:[]}) )
|
||||
|
||||
self.failUnlessEqual(s0.remote_read(0, 20), "00000000001111111111")
|
||||
self.failUnlessEqual(s0.remote_read(95, 10), "99999")
|
||||
self.failUnlessEqual(s0.remote_get_length(), 100)
|
||||
self.failUnlessEqual(read("si1", [0], [(0,20)]),
|
||||
{0: ["00000000001111111111"]})
|
||||
self.failUnlessEqual(read("si1", [0], [(95,10)]),
|
||||
{0: ["99999"]})
|
||||
#self.failUnlessEqual(s0.remote_get_length(), 100)
|
||||
|
||||
bad_secrets = ("bad write enabler", secrets[1], secrets[2])
|
||||
self.failUnlessRaises(BadWriteEnablerError,
|
||||
s0.remote_testv_and_writev,
|
||||
"bad write enabler",
|
||||
[], [], None)
|
||||
write, "si1", bad_secrets,
|
||||
{}, [])
|
||||
|
||||
# this testv should fail
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[(0, 12, "eq", "444444444444"),
|
||||
(20, 5, "eq", "22222"),
|
||||
],
|
||||
[(0, "x"*100)], None)
|
||||
self.failUnlessEqual(answer, (False, ["000000000011",
|
||||
"22222"]))
|
||||
self.failUnlessEqual(s0.remote_read(0, 100), data)
|
||||
answer = write("si1", secrets,
|
||||
{0: ([(0, 12, "eq", "444444444444"),
|
||||
(20, 5, "eq", "22222"),
|
||||
],
|
||||
[(0, "x"*100)],
|
||||
None),
|
||||
},
|
||||
[(0,12), (20,5)],
|
||||
)
|
||||
self.failUnlessEqual(answer, (False,
|
||||
{0: ["000000000011", "22222"],
|
||||
1: ["", ""],
|
||||
2: ["", ""],
|
||||
}))
|
||||
self.failUnlessEqual(read("si1", [0], [(0,100)]), {0: [data]})
|
||||
|
||||
# as should this one
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[(10, 5, "lt", "11111"),
|
||||
],
|
||||
[(0, "x"*100)], None)
|
||||
self.failUnlessEqual(answer, (False, ["11111"]))
|
||||
self.failUnlessEqual(s0.remote_read(0, 100), data)
|
||||
answer = write("si1", secrets,
|
||||
{0: ([(10, 5, "lt", "11111"),
|
||||
],
|
||||
[(0, "x"*100)],
|
||||
None),
|
||||
},
|
||||
[(10,5)],
|
||||
)
|
||||
self.failUnlessEqual(answer, (False,
|
||||
{0: ["11111"],
|
||||
1: [""],
|
||||
2: [""]},
|
||||
))
|
||||
self.failUnlessEqual(read("si1", [0], [(0,100)]), {0: [data]})
|
||||
|
||||
|
||||
def test_operators(self):
|
||||
# test operators, the data we're comparing is '11111' in all cases.
|
||||
# test both fail+pass, reset data after each one.
|
||||
ss = self.create("test_operators")
|
||||
shares = self.allocate(ss, "si1", "we1", self._secret.next(),
|
||||
set([0,1,2]), 100)
|
||||
s0 = shares[0]
|
||||
WE = self.write_enabler("we1")
|
||||
data = "".join([ ("%d" % i) * 10 for i in range(10) ])
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[],
|
||||
[(0, data),],
|
||||
new_length=None)
|
||||
|
||||
# nop
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[(10, 5, "nop", "11111"),
|
||||
],
|
||||
[(0, "x"*100)], None)
|
||||
self.failUnlessEqual(answer, (True, ["11111"]))
|
||||
self.failUnlessEqual(s0.remote_read(0, 100), "x"*100)
|
||||
s0.remote_testv_and_writev(WE, [], [(0,data)], None)
|
||||
secrets = ( self.write_enabler("we1"),
|
||||
self.renew_secret("we1"),
|
||||
self.cancel_secret("we1") )
|
||||
data = "".join([ ("%d" % i) * 10 for i in range(10) ])
|
||||
write = ss.remote_slot_testv_and_readv_and_writev
|
||||
read = ss.remote_slot_readv
|
||||
|
||||
def reset():
|
||||
write("si1", secrets,
|
||||
{0: ([], [(0,data)], None)},
|
||||
[])
|
||||
|
||||
reset()
|
||||
|
||||
# lt
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[(10, 5, "lt", "11110"),
|
||||
answer = write("si1", secrets, {0: ([(10, 5, "lt", "11110"),
|
||||
],
|
||||
[(0, "x"*100)], None)
|
||||
self.failUnlessEqual(answer, (False, ["11111"]))
|
||||
self.failUnlessEqual(s0.remote_read(0, 100), data)
|
||||
s0.remote_testv_and_writev(WE, [], [(0,data)], None)
|
||||
[(0, "x"*100)],
|
||||
None,
|
||||
)}, [(10,5)])
|
||||
self.failUnlessEqual(answer, (False, {0: ["11111"]}))
|
||||
self.failUnlessEqual(read("si1", [0], [(0,100)]), {0: [data]})
|
||||
self.failUnlessEqual(read("si1", [], [(0,100)]), {0: [data]})
|
||||
reset()
|
||||
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[(10, 5, "lt", "11111"),
|
||||
answer = write("si1", secrets, {0: ([(10, 5, "lt", "11111"),
|
||||
],
|
||||
[(0, "x"*100)], None)
|
||||
self.failUnlessEqual(answer, (False, ["11111"]))
|
||||
self.failUnlessEqual(s0.remote_read(0, 100), data)
|
||||
s0.remote_testv_and_writev(WE, [], [(0,data)], None)
|
||||
[(0, "x"*100)],
|
||||
None,
|
||||
)}, [(10,5)])
|
||||
self.failUnlessEqual(answer, (False, {0: ["11111"]}))
|
||||
self.failUnlessEqual(read("si1", [0], [(0,100)]), {0: [data]})
|
||||
reset()
|
||||
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[(10, 5, "lt", "11112"),
|
||||
answer = write("si1", secrets, {0: ([(10, 5, "lt", "11112"),
|
||||
],
|
||||
[(0, "y"*100)], None)
|
||||
self.failUnlessEqual(answer, (True, ["11111"]))
|
||||
self.failUnlessEqual(s0.remote_read(0, 100), "y"*100)
|
||||
s0.remote_testv_and_writev(WE, [], [(0,data)], None)
|
||||
[(0, "y"*100)],
|
||||
None,
|
||||
)}, [(10,5)])
|
||||
self.failUnlessEqual(answer, (True, {0: ["11111"]}))
|
||||
self.failUnlessEqual(read("si1", [0], [(0,100)]), {0: ["y"*100]})
|
||||
reset()
|
||||
|
||||
# le
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[(10, 5, "le", "11110"),
|
||||
answer = write("si1", secrets, {0: ([(10, 5, "le", "11110"),
|
||||
],
|
||||
[(0, "x"*100)], None)
|
||||
self.failUnlessEqual(answer, (False, ["11111"]))
|
||||
self.failUnlessEqual(s0.remote_read(0, 100), data)
|
||||
s0.remote_testv_and_writev(WE, [], [(0,data)], None)
|
||||
[(0, "x"*100)],
|
||||
None,
|
||||
)}, [(10,5)])
|
||||
self.failUnlessEqual(answer, (False, {0: ["11111"]}))
|
||||
self.failUnlessEqual(read("si1", [0], [(0,100)]), {0: [data]})
|
||||
reset()
|
||||
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[(10, 5, "le", "11111"),
|
||||
answer = write("si1", secrets, {0: ([(10, 5, "le", "11111"),
|
||||
],
|
||||
[(0, "y"*100)], None)
|
||||
self.failUnlessEqual(answer, (True, ["11111"]))
|
||||
self.failUnlessEqual(s0.remote_read(0, 100), "y"*100)
|
||||
s0.remote_testv_and_writev(WE, [], [(0,data)], None)
|
||||
[(0, "y"*100)],
|
||||
None,
|
||||
)}, [(10,5)])
|
||||
self.failUnlessEqual(answer, (True, {0: ["11111"]}))
|
||||
self.failUnlessEqual(read("si1", [0], [(0,100)]), {0: ["y"*100]})
|
||||
reset()
|
||||
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[(10, 5, "le", "11112"),
|
||||
answer = write("si1", secrets, {0: ([(10, 5, "le", "11112"),
|
||||
],
|
||||
[(0, "y"*100)], None)
|
||||
self.failUnlessEqual(answer, (True, ["11111"]))
|
||||
self.failUnlessEqual(s0.remote_read(0, 100), "y"*100)
|
||||
s0.remote_testv_and_writev(WE, [], [(0,data)], None)
|
||||
[(0, "y"*100)],
|
||||
None,
|
||||
)}, [(10,5)])
|
||||
self.failUnlessEqual(answer, (True, {0: ["11111"]}))
|
||||
self.failUnlessEqual(read("si1", [0], [(0,100)]), {0: ["y"*100]})
|
||||
reset()
|
||||
|
||||
# eq
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[(10, 5, "eq", "11112"),
|
||||
answer = write("si1", secrets, {0: ([(10, 5, "eq", "11112"),
|
||||
],
|
||||
[(0, "x"*100)], None)
|
||||
self.failUnlessEqual(answer, (False, ["11111"]))
|
||||
self.failUnlessEqual(s0.remote_read(0, 100), data)
|
||||
s0.remote_testv_and_writev(WE, [], [(0,data)], None)
|
||||
[(0, "x"*100)],
|
||||
None,
|
||||
)}, [(10,5)])
|
||||
self.failUnlessEqual(answer, (False, {0: ["11111"]}))
|
||||
self.failUnlessEqual(read("si1", [0], [(0,100)]), {0: [data]})
|
||||
reset()
|
||||
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[(10, 5, "eq", "11111"),
|
||||
answer = write("si1", secrets, {0: ([(10, 5, "eq", "11111"),
|
||||
],
|
||||
[(0, "y"*100)], None)
|
||||
self.failUnlessEqual(answer, (True, ["11111"]))
|
||||
self.failUnlessEqual(s0.remote_read(0, 100), "y"*100)
|
||||
s0.remote_testv_and_writev(WE, [], [(0,data)], None)
|
||||
[(0, "y"*100)],
|
||||
None,
|
||||
)}, [(10,5)])
|
||||
self.failUnlessEqual(answer, (True, {0: ["11111"]}))
|
||||
self.failUnlessEqual(read("si1", [0], [(0,100)]), {0: ["y"*100]})
|
||||
reset()
|
||||
|
||||
# ne
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[(10, 5, "ne", "11111"),
|
||||
answer = write("si1", secrets, {0: ([(10, 5, "ne", "11111"),
|
||||
],
|
||||
[(0, "x"*100)], None)
|
||||
self.failUnlessEqual(answer, (False, ["11111"]))
|
||||
self.failUnlessEqual(s0.remote_read(0, 100), data)
|
||||
s0.remote_testv_and_writev(WE, [], [(0,data)], None)
|
||||
[(0, "x"*100)],
|
||||
None,
|
||||
)}, [(10,5)])
|
||||
self.failUnlessEqual(answer, (False, {0: ["11111"]}))
|
||||
self.failUnlessEqual(read("si1", [0], [(0,100)]), {0: [data]})
|
||||
reset()
|
||||
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[(10, 5, "ne", "11112"),
|
||||
answer = write("si1", secrets, {0: ([(10, 5, "ne", "11112"),
|
||||
],
|
||||
[(0, "y"*100)], None)
|
||||
self.failUnlessEqual(answer, (True, ["11111"]))
|
||||
self.failUnlessEqual(s0.remote_read(0, 100), "y"*100)
|
||||
s0.remote_testv_and_writev(WE, [], [(0,data)], None)
|
||||
[(0, "y"*100)],
|
||||
None,
|
||||
)}, [(10,5)])
|
||||
self.failUnlessEqual(answer, (True, {0: ["11111"]}))
|
||||
self.failUnlessEqual(read("si1", [0], [(0,100)]), {0: ["y"*100]})
|
||||
reset()
|
||||
|
||||
# ge
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[(10, 5, "ge", "11110"),
|
||||
answer = write("si1", secrets, {0: ([(10, 5, "ge", "11110"),
|
||||
],
|
||||
[(0, "y"*100)], None)
|
||||
self.failUnlessEqual(answer, (True, ["11111"]))
|
||||
self.failUnlessEqual(s0.remote_read(0, 100), "y"*100)
|
||||
s0.remote_testv_and_writev(WE, [], [(0,data)], None)
|
||||
[(0, "y"*100)],
|
||||
None,
|
||||
)}, [(10,5)])
|
||||
self.failUnlessEqual(answer, (True, {0: ["11111"]}))
|
||||
self.failUnlessEqual(read("si1", [0], [(0,100)]), {0: ["y"*100]})
|
||||
reset()
|
||||
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[(10, 5, "ge", "11111"),
|
||||
answer = write("si1", secrets, {0: ([(10, 5, "ge", "11111"),
|
||||
],
|
||||
[(0, "y"*100)], None)
|
||||
self.failUnlessEqual(answer, (True, ["11111"]))
|
||||
self.failUnlessEqual(s0.remote_read(0, 100), "y"*100)
|
||||
s0.remote_testv_and_writev(WE, [], [(0,data)], None)
|
||||
[(0, "y"*100)],
|
||||
None,
|
||||
)}, [(10,5)])
|
||||
self.failUnlessEqual(answer, (True, {0: ["11111"]}))
|
||||
self.failUnlessEqual(read("si1", [0], [(0,100)]), {0: ["y"*100]})
|
||||
reset()
|
||||
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[(10, 5, "ge", "11112"),
|
||||
answer = write("si1", secrets, {0: ([(10, 5, "ge", "11112"),
|
||||
],
|
||||
[(0, "y"*100)], None)
|
||||
self.failUnlessEqual(answer, (False, ["11111"]))
|
||||
self.failUnlessEqual(s0.remote_read(0, 100), data)
|
||||
s0.remote_testv_and_writev(WE, [], [(0,data)], None)
|
||||
[(0, "y"*100)],
|
||||
None,
|
||||
)}, [(10,5)])
|
||||
self.failUnlessEqual(answer, (False, {0: ["11111"]}))
|
||||
self.failUnlessEqual(read("si1", [0], [(0,100)]), {0: [data]})
|
||||
reset()
|
||||
|
||||
# gt
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[(10, 5, "gt", "11110"),
|
||||
answer = write("si1", secrets, {0: ([(10, 5, "gt", "11110"),
|
||||
],
|
||||
[(0, "y"*100)], None)
|
||||
self.failUnlessEqual(answer, (True, ["11111"]))
|
||||
self.failUnlessEqual(s0.remote_read(0, 100), "y"*100)
|
||||
s0.remote_testv_and_writev(WE, [], [(0,data)], None)
|
||||
[(0, "y"*100)],
|
||||
None,
|
||||
)}, [(10,5)])
|
||||
self.failUnlessEqual(answer, (True, {0: ["11111"]}))
|
||||
self.failUnlessEqual(read("si1", [0], [(0,100)]), {0: ["y"*100]})
|
||||
reset()
|
||||
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[(10, 5, "gt", "11111"),
|
||||
answer = write("si1", secrets, {0: ([(10, 5, "gt", "11111"),
|
||||
],
|
||||
[(0, "x"*100)], None)
|
||||
self.failUnlessEqual(answer, (False, ["11111"]))
|
||||
self.failUnlessEqual(s0.remote_read(0, 100), data)
|
||||
s0.remote_testv_and_writev(WE, [], [(0,data)], None)
|
||||
[(0, "x"*100)],
|
||||
None,
|
||||
)}, [(10,5)])
|
||||
self.failUnlessEqual(answer, (False, {0: ["11111"]}))
|
||||
self.failUnlessEqual(read("si1", [0], [(0,100)]), {0: [data]})
|
||||
reset()
|
||||
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[(10, 5, "gt", "11112"),
|
||||
answer = write("si1", secrets, {0: ([(10, 5, "gt", "11112"),
|
||||
],
|
||||
[(0, "x"*100)], None)
|
||||
self.failUnlessEqual(answer, (False, ["11111"]))
|
||||
self.failUnlessEqual(s0.remote_read(0, 100), data)
|
||||
s0.remote_testv_and_writev(WE, [], [(0,data)], None)
|
||||
[(0, "x"*100)],
|
||||
None,
|
||||
)}, [(10,5)])
|
||||
self.failUnlessEqual(answer, (False, {0: ["11111"]}))
|
||||
self.failUnlessEqual(read("si1", [0], [(0,100)]), {0: [data]})
|
||||
reset()
|
||||
|
||||
def test_readv(self):
|
||||
ss = self.create("test_allocate")
|
||||
shares = self.allocate(ss, "si1", "we1", self._secret.next(),
|
||||
set([0,1,2]), 100)
|
||||
WE = self.write_enabler("we1")
|
||||
ss = self.create("test_readv")
|
||||
secrets = ( self.write_enabler("we1"),
|
||||
self.renew_secret("we1"),
|
||||
self.cancel_secret("we1") )
|
||||
data = "".join([ ("%d" % i) * 10 for i in range(10) ])
|
||||
write = ss.remote_slot_testv_and_readv_and_writev
|
||||
read = ss.remote_slot_readv
|
||||
data = [("%d" % i) * 100 for i in range(3)]
|
||||
for i in range(3):
|
||||
rc = shares[i].remote_testv_and_writev(WE, [], [(0, data[i])],
|
||||
new_length=None)
|
||||
self.failUnlessEqual(rc, (True, []))
|
||||
answer = ss.remote_readv_slots("si1", [(0, 10)])
|
||||
rc = write("si1", secrets,
|
||||
{0: ([], [(0,data[0])], None),
|
||||
1: ([], [(0,data[1])], None),
|
||||
2: ([], [(0,data[2])], None),
|
||||
}, [])
|
||||
self.failUnlessEqual(rc, (True, {}))
|
||||
|
||||
answer = read("si1", [], [(0, 10)])
|
||||
self.failUnlessEqual(answer, {0: ["0"*10],
|
||||
1: ["1"*10],
|
||||
2: ["2"*10]})
|
||||
@ -716,15 +763,15 @@ class MutableServer(unittest.TestCase):
|
||||
|
||||
def test_leases(self):
|
||||
ss = self.create("test_leases")
|
||||
secret = 14
|
||||
shares = self.allocate(ss, "si1", "we1", secret, set([0,1,2]), 100)
|
||||
s0 = shares[0]
|
||||
WE = self.write_enabler("we1")
|
||||
def secrets(n):
|
||||
return ( self.write_enabler("we1"),
|
||||
self.renew_secret("we1-%d" % n),
|
||||
self.cancel_secret("we1-%d" % n) )
|
||||
data = "".join([ ("%d" % i) * 10 for i in range(10) ])
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[],
|
||||
[(0, data),],
|
||||
new_length=None)
|
||||
write = ss.remote_slot_testv_and_readv_and_writev
|
||||
read = ss.remote_slot_readv
|
||||
rc = write("si1", secrets(0), {0: ([], [(0,data)], None)}, [])
|
||||
self.failUnlessEqual(rc, (True, {}))
|
||||
|
||||
# create a random non-numeric file in the bucket directory, to
|
||||
# exercise the code that's supposed to ignore those.
|
||||
@ -736,40 +783,41 @@ class MutableServer(unittest.TestCase):
|
||||
|
||||
# re-allocate the slots and use the same secrets, that should update
|
||||
# the lease
|
||||
shares2 = self.allocate(ss, "si1", "we1", secret, set([0,1,2]), 100)
|
||||
write("si1", secrets(0), {0: ([], [(0,data)], None)}, [])
|
||||
|
||||
# renew it directly
|
||||
ss.remote_renew_lease("si1", self.renew_secret(secret))
|
||||
ss.remote_renew_lease("si1", secrets(0)[1])
|
||||
|
||||
# now allocate them with a bunch of different secrets, to trigger the
|
||||
# extended lease code
|
||||
shares2 = self.allocate(ss, "si1", "we1", secret+1, set([0,1,2]), 100)
|
||||
shares2 = self.allocate(ss, "si1", "we1", secret+2, set([0,1,2]), 100)
|
||||
shares2 = self.allocate(ss, "si1", "we1", secret+3, set([0,1,2]), 100)
|
||||
shares2 = self.allocate(ss, "si1", "we1", secret+4, set([0,1,2]), 100)
|
||||
shares2 = self.allocate(ss, "si1", "we1", secret+5, set([0,1,2]), 100)
|
||||
# cancel one of them
|
||||
ss.remote_cancel_lease("si1", self.cancel_secret(secret+5))
|
||||
write("si1", secrets(1), {0: ([], [(0,data)], None)}, [])
|
||||
write("si1", secrets(2), {0: ([], [(0,data)], None)}, [])
|
||||
write("si1", secrets(3), {0: ([], [(0,data)], None)}, [])
|
||||
write("si1", secrets(4), {0: ([], [(0,data)], None)}, [])
|
||||
write("si1", secrets(5), {0: ([], [(0,data)], None)}, [])
|
||||
|
||||
# cancel one of them
|
||||
ss.remote_cancel_lease("si1", secrets(5)[2])
|
||||
|
||||
s0 = MutableShareFile(os.path.join(bucket_dir, "0"))
|
||||
all_leases = s0.debug_get_leases()
|
||||
self.failUnlessEqual(len(all_leases), 5)
|
||||
|
||||
# and write enough data to expand the container, forcing the server
|
||||
# to move the leases
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[],
|
||||
[(0, data),],
|
||||
new_length=200)
|
||||
write("si1", secrets(0),
|
||||
{0: ([], [(0,data)], 200), },
|
||||
[])
|
||||
|
||||
# read back the leases, make sure they're still intact.
|
||||
self.compare_leases_without_timestamps(all_leases,
|
||||
s0.debug_get_leases())
|
||||
|
||||
ss.remote_renew_lease("si1", self.renew_secret(secret))
|
||||
ss.remote_renew_lease("si1", self.renew_secret(secret+1))
|
||||
ss.remote_renew_lease("si1", self.renew_secret(secret+2))
|
||||
ss.remote_renew_lease("si1", self.renew_secret(secret+3))
|
||||
ss.remote_renew_lease("si1", self.renew_secret(secret+4))
|
||||
ss.remote_renew_lease("si1", secrets(0)[1])
|
||||
ss.remote_renew_lease("si1", secrets(1)[1])
|
||||
ss.remote_renew_lease("si1", secrets(2)[1])
|
||||
ss.remote_renew_lease("si1", secrets(3)[1])
|
||||
ss.remote_renew_lease("si1", secrets(4)[1])
|
||||
self.compare_leases_without_timestamps(all_leases,
|
||||
s0.debug_get_leases())
|
||||
# get a new copy of the leases, with the current timestamps. Reading
|
||||
@ -782,40 +830,40 @@ class MutableServer(unittest.TestCase):
|
||||
# is present, to provide for share migration
|
||||
self.failUnlessRaises(IndexError,
|
||||
ss.remote_renew_lease, "si1",
|
||||
self.renew_secret(secret+20))
|
||||
secrets(20)[1])
|
||||
# same for cancelling
|
||||
self.failUnlessRaises(IndexError,
|
||||
ss.remote_cancel_lease, "si1",
|
||||
self.cancel_secret(secret+20))
|
||||
self.failUnlessEqual(all_leases, s0.debug_get_leases())
|
||||
s0.remote_read(0, 200)
|
||||
secrets(20)[2])
|
||||
self.failUnlessEqual(all_leases, s0.debug_get_leases())
|
||||
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[],
|
||||
[(200, "make me bigger"),],
|
||||
new_length=None)
|
||||
# reading shares should not modify the timestamp
|
||||
read("si1", [], [(0,200)])
|
||||
self.failUnlessEqual(all_leases, s0.debug_get_leases())
|
||||
|
||||
write("si1", secrets(0),
|
||||
{0: ([], [(200, "make me bigger")], None)}, [])
|
||||
self.compare_leases_without_timestamps(all_leases,
|
||||
s0.debug_get_leases())
|
||||
|
||||
answer = s0.remote_testv_and_writev(WE,
|
||||
[],
|
||||
[(500, "make me really bigger"),],
|
||||
new_length=None)
|
||||
write("si1", secrets(0),
|
||||
{0: ([], [(500, "make me really bigger")], None)}, [])
|
||||
self.compare_leases_without_timestamps(all_leases,
|
||||
s0.debug_get_leases())
|
||||
|
||||
# now cancel them all
|
||||
ss.remote_cancel_lease("si1", self.cancel_secret(secret))
|
||||
ss.remote_cancel_lease("si1", self.cancel_secret(secret+1))
|
||||
ss.remote_cancel_lease("si1", self.cancel_secret(secret+2))
|
||||
ss.remote_cancel_lease("si1", self.cancel_secret(secret+3))
|
||||
ss.remote_cancel_lease("si1", secrets(0)[2])
|
||||
ss.remote_cancel_lease("si1", secrets(1)[2])
|
||||
ss.remote_cancel_lease("si1", secrets(2)[2])
|
||||
ss.remote_cancel_lease("si1", secrets(3)[2])
|
||||
|
||||
# the slot should still be there
|
||||
shares3 = ss.remote_get_mutable_slot("si1")
|
||||
self.failUnlessEqual(len(shares3), 3)
|
||||
remaining_shares = read("si1", [], [(0,10)])
|
||||
self.failUnlessEqual(len(remaining_shares), 1)
|
||||
self.failUnlessEqual(len(s0.debug_get_leases()), 1)
|
||||
|
||||
ss.remote_cancel_lease("si1", self.cancel_secret(secret+4))
|
||||
ss.remote_cancel_lease("si1", secrets(4)[2])
|
||||
# now the slot should be gone
|
||||
self.failUnlessEqual(ss.remote_get_mutable_slot("si1"), {})
|
||||
no_shares = read("si1", [], [(0,10)])
|
||||
self.failUnlessEqual(no_shares, {})
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user