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import redis
from ...asyncio.client import Pipeline as AsyncioPipeline
from .commands import (
AGGREGATE_CMD,
CONFIG_CMD,
INFO_CMD,
PROFILE_CMD,
SEARCH_CMD,
SPELLCHECK_CMD,
SYNDUMP_CMD,
AsyncSearchCommands,
SearchCommands,
)
class Search(SearchCommands):
"""
Create a client for talking to search.
It abstracts the API of the module and lets you just use the engine.
"""
class BatchIndexer:
"""
A batch indexer allows you to automatically batch
document indexing in pipelines, flushing it every N documents.
"""
def __init__(self, client, chunk_size=1000):
self.client = client
self.execute_command = client.execute_command
self._pipeline = client.pipeline(transaction=False, shard_hint=None)
self.total = 0
self.chunk_size = chunk_size
self.current_chunk = 0
def __del__(self):
if self.current_chunk:
self.commit()
def add_document(
self,
doc_id,
nosave=False,
score=1.0,
payload=None,
replace=False,
partial=False,
no_create=False,
**fields,
):
"""
Add a document to the batch query
"""
self.client._add_document(
doc_id,
conn=self._pipeline,
nosave=nosave,
score=score,
payload=payload,
replace=replace,
partial=partial,
no_create=no_create,
**fields,
)
self.current_chunk += 1
self.total += 1
if self.current_chunk >= self.chunk_size:
self.commit()
def add_document_hash(self, doc_id, score=1.0, replace=False):
"""
Add a hash to the batch query
"""
self.client._add_document_hash(
doc_id, conn=self._pipeline, score=score, replace=replace
)
self.current_chunk += 1
self.total += 1
if self.current_chunk >= self.chunk_size:
self.commit()
def commit(self):
"""
Manually commit and flush the batch indexing query
"""
self._pipeline.execute()
self.current_chunk = 0
def __init__(self, client, index_name="idx"):
"""
Create a new Client for the given index_name.
The default name is `idx`
If conn is not None, we employ an already existing redis connection
"""
self._MODULE_CALLBACKS = {}
self.client = client
self.index_name = index_name
self.execute_command = client.execute_command
self._pipeline = client.pipeline
self._RESP2_MODULE_CALLBACKS = {
INFO_CMD: self._parse_info,
SEARCH_CMD: self._parse_search,
AGGREGATE_CMD: self._parse_aggregate,
PROFILE_CMD: self._parse_profile,
SPELLCHECK_CMD: self._parse_spellcheck,
CONFIG_CMD: self._parse_config_get,
SYNDUMP_CMD: self._parse_syndump,
}
def pipeline(self, transaction=True, shard_hint=None):
"""Creates a pipeline for the SEARCH module, that can be used for executing
SEARCH commands, as well as classic core commands.
"""
p = Pipeline(
connection_pool=self.client.connection_pool,
response_callbacks=self._MODULE_CALLBACKS,
transaction=transaction,
shard_hint=shard_hint,
)
p.index_name = self.index_name
return p
class AsyncSearch(Search, AsyncSearchCommands):
class BatchIndexer(Search.BatchIndexer):
"""
A batch indexer allows you to automatically batch
document indexing in pipelines, flushing it every N documents.
"""
async def add_document(
self,
doc_id,
nosave=False,
score=1.0,
payload=None,
replace=False,
partial=False,
no_create=False,
**fields,
):
"""
Add a document to the batch query
"""
self.client._add_document(
doc_id,
conn=self._pipeline,
nosave=nosave,
score=score,
payload=payload,
replace=replace,
partial=partial,
no_create=no_create,
**fields,
)
self.current_chunk += 1
self.total += 1
if self.current_chunk >= self.chunk_size:
await self.commit()
async def commit(self):
"""
Manually commit and flush the batch indexing query
"""
await self._pipeline.execute()
self.current_chunk = 0
def pipeline(self, transaction=True, shard_hint=None):
"""Creates a pipeline for the SEARCH module, that can be used for executing
SEARCH commands, as well as classic core commands.
"""
p = AsyncPipeline(
connection_pool=self.client.connection_pool,
response_callbacks=self._MODULE_CALLBACKS,
transaction=transaction,
shard_hint=shard_hint,
)
p.index_name = self.index_name
return p
class Pipeline(SearchCommands, redis.client.Pipeline):
"""Pipeline for the module."""
class AsyncPipeline(AsyncSearchCommands, AsyncioPipeline, Pipeline):
"""AsyncPipeline for the module."""
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