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@@ -14,9 +14,13 @@
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# limitations under the License.
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import logging
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+from typing import Optional
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+
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+import attr
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from synapse.api.errors import SynapseError
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from synapse.http.servlet import parse_integer, parse_string
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+from synapse.http.site import SynapseRequest
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from synapse.types import StreamToken
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logger = logging.getLogger(__name__)
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@@ -25,38 +29,22 @@ logger = logging.getLogger(__name__)
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MAX_LIMIT = 1000
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-class SourcePaginationConfig:
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-
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- """A configuration object which stores pagination parameters for a
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- specific event source."""
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-
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- def __init__(self, from_key=None, to_key=None, direction="f", limit=None):
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- self.from_key = from_key
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- self.to_key = to_key
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- self.direction = "f" if direction == "f" else "b"
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- self.limit = min(int(limit), MAX_LIMIT) if limit is not None else None
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-
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- def __repr__(self):
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- return "StreamConfig(from_key=%r, to_key=%r, direction=%r, limit=%r)" % (
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- self.from_key,
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- self.to_key,
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- self.direction,
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- self.limit,
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- )
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-
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-
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+@attr.s(slots=True)
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class PaginationConfig:
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-
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"""A configuration object which stores pagination parameters."""
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- def __init__(self, from_token=None, to_token=None, direction="f", limit=None):
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- self.from_token = from_token
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- self.to_token = to_token
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- self.direction = "f" if direction == "f" else "b"
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- self.limit = min(int(limit), MAX_LIMIT) if limit is not None else None
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+ from_token = attr.ib(type=Optional[StreamToken])
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+ to_token = attr.ib(type=Optional[StreamToken])
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+ direction = attr.ib(type=str)
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+ limit = attr.ib(type=Optional[int])
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@classmethod
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- def from_request(cls, request, raise_invalid_params=True, default_limit=None):
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+ def from_request(
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+ cls,
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+ request: SynapseRequest,
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+ raise_invalid_params: bool = True,
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+ default_limit: Optional[int] = None,
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+ ) -> "PaginationConfig":
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direction = parse_string(request, "dir", default="f", allowed_values=["f", "b"])
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from_tok = parse_string(request, "from")
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@@ -78,8 +66,11 @@ class PaginationConfig:
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limit = parse_integer(request, "limit", default=default_limit)
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- if limit and limit < 0:
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- raise SynapseError(400, "Limit must be 0 or above")
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+ if limit:
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+ if limit < 0:
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+ raise SynapseError(400, "Limit must be 0 or above")
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+
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+ limit = min(int(limit), MAX_LIMIT)
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try:
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return PaginationConfig(from_tok, to_tok, direction, limit)
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@@ -87,20 +78,10 @@ class PaginationConfig:
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logger.exception("Failed to create pagination config")
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raise SynapseError(400, "Invalid request.")
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- def __repr__(self):
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+ def __repr__(self) -> str:
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return ("PaginationConfig(from_tok=%r, to_tok=%r, direction=%r, limit=%r)") % (
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self.from_token,
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self.to_token,
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self.direction,
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self.limit,
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)
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-
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- def get_source_config(self, source_name):
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- keyname = "%s_key" % source_name
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-
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- return SourcePaginationConfig(
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- from_key=getattr(self.from_token, keyname),
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- to_key=getattr(self.to_token, keyname) if self.to_token else None,
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- direction=self.direction,
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- limit=self.limit,
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- )
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