Tru Chain¶
Langchain instrumentation and monitoring.¶
TruChain
¶
Bases: App
Instantiates the Langchain Wrapper.
Usage:
Langchain Code: Langchain Quickstart
# Code snippet taken from langchain 0.0.281 (API subject to change with new versions)
from langchain.chains import LLMChain
from langchain.llms import OpenAI
from langchain.prompts.chat import ChatPromptTemplate
from langchain.prompts.chat import HumanMessagePromptTemplate
from langchain.prompts.chat import PromptTemplate
full_prompt = HumanMessagePromptTemplate(
prompt=PromptTemplate(
template=
"Provide a helpful response with relevant background information for the following: {prompt}",
input_variables=["prompt"],
)
)
chat_prompt_template = ChatPromptTemplate.from_messages([full_prompt])
llm = OpenAI(temperature=0.9, max_tokens=128)
chain = LLMChain(llm=llm, prompt=chat_prompt_template, verbose=True)
Trulens Eval Code:
from trulens_eval import TruChain
# f_lang_match, f_qa_relevance, f_qs_relevance are feedback functions
tru_recorder = TruChain(
chain,
app_id='Chain1_ChatApplication',
feedbacks=[f_lang_match, f_qa_relevance, f_qs_relevance])
)
with tru_recorder as recording:
chain(""What is langchain?")
tru_record = recording.records[0]
# To add record metadata
with tru_recorder as recording:
recording.record_metadata="this is metadata for all records in this context that follow this line"
chain("What is langchain?")
recording.record_metadata="this is different metadata for all records in this context that follow this line"
chain("Where do I download langchain?")
Parameters:
Name | Type | Description | Default |
---|---|---|---|
app |
Chain
|
A langchain application. |
required |
Source code in trulens_eval/trulens_eval/tru_chain.py
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|
__call__(*args, **kwargs)
¶
Wrapped call to self.app._call with instrumentation. If you need to
get the record, use call_with_record
instead.
Source code in trulens_eval/trulens_eval/tru_chain.py
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|
__init__(app, **kwargs)
¶
Wrap a langchain chain for monitoring.
- app: Chain -- the chain to wrap.
- More args in App
- More args in AppDefinition
- More args in WithClassInfo
Source code in trulens_eval/trulens_eval/tru_chain.py
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acall_with_record(*args, **kwargs)
async
¶
Run the chain acall method and also return a record metadata object.
Source code in trulens_eval/trulens_eval/tru_chain.py
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|
call_with_record(*args, **kwargs)
¶
Run the chain call method and also return a record metadata object.
Source code in trulens_eval/trulens_eval/tru_chain.py
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|
main_input(func, sig, bindings)
¶
Determine the main input string for the given function func
with
signature sig
if it is to be called with the given bindings
bindings
.
Source code in trulens_eval/trulens_eval/tru_chain.py
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|
main_output(func, sig, bindings, ret)
¶
Determine the main out string for the given function func
with
signature sig
after it is called with the given bindings
and has
returned ret
.
Source code in trulens_eval/trulens_eval/tru_chain.py
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