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refactor: Separate protobuf dependencies into sensible extras #522

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c3cef00
Separate protobuf dependencies
vinoo999 Oct 23, 2025
8ffaa43
fix google-api-core as well
vinoo999 Oct 24, 2025
0e23416
re-order dependencies
vinoo999 Oct 24, 2025
16ab7cc
patch to readme, remove rest-server extra
vinoo999 Oct 24, 2025
9a8fe5d
Merge branch 'main' into split_proto_deps
vinoo999 Oct 24, 2025
66b42d1
Update README.md
vinoo999 Oct 27, 2025
b956806
remove proto extra, consolidate in http-server, grpc
vinoo999 Nov 3, 2025
965c371
Update README.md
vinoo999 Nov 3, 2025
285ff7a
Update proto_utils.py
vinoo999 Nov 3, 2025
09bb4f1
Merge branch 'main' into split_proto_deps
vinoo999 Nov 3, 2025
4be36ea
Merge branch 'main' into split_proto_deps
vinoo999 Nov 12, 2025
b7e2c71
Update README.md
vinoo999 Nov 19, 2025
5813558
Merge branch 'main' into split_proto_deps
vinoo999 Nov 19, 2025
30af48b
revert spelling allow.txt
vinoo999 Nov 19, 2025
0ab72ba
Merge branch 'main' into split_proto_deps
vinoo999 Dec 2, 2025
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42 changes: 21 additions & 21 deletions .github/actions/spelling/allow.txt
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@lkawka lkawka Nov 18, 2025

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Why make changes to this file? It appears that entires were in an alphabetical order here.

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@vinoo999 vinoo999 Nov 19, 2025

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unclear. i think this came directly from the github action when updating readme. i can revert

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@vinoo999 vinoo999 Nov 19, 2025

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in fact I think this may have come from the Format script which must have a bug for capitalization

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@vinoo999 vinoo999 Nov 19, 2025

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https://github.com/a2aproject/a2a-python/pull/550### to address

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@vinoo999 vinoo999 Nov 19, 2025

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reran with ^ and applied. removed postres dup

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@lkawka lkawka Nov 19, 2025

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Can we leave it as it was? I'm not entirely familiar with how this file is used and I worry that dependents may be case-sensitive.

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@holtskinner holtskinner Nov 19, 2025

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This was intentionally left case-sensitive, because the case-insensitive sort wasn't always consistent.

Original file line number Diff line number Diff line change
@@ -1,24 +1,37 @@
AAgent
ACMRTUXB
ACard
AClient
ACMRTUXB
aconnect
adk
AError
AFast
agentic
AGrpc
aio
aiomysql
amannn
aproject
ARequest
ARun
AServer
AServers
AService
AStarlette
AUser
DSNs
EUR
GBP
GVsb
INR
JPY
JSONRPCt
JWS
Llm
POSTGRES
RUF
SLF
Tful
aconnect
adk
agentic
aio
aiomysql
amannn
aproject
autouse
backticks
cla
Expand All @@ -29,32 +42,23 @@ coro
datamodel
deepwiki
drivername
DSNs
dunders
euo
EUR
excinfo
fernet
fetchrow
fetchval
GBP
genai
getkwargs
gle
GVsb
ietf
initdb
inmemory
INR
isready
JPY
JSONRPCt
JWS
kwarg
langgraph
lifecycles
linting
Llm
lstrips
mikeas
mockurl
Expand All @@ -64,7 +68,6 @@ oidc
opensource
otherurl
postgres
POSTGRES
postgresql
protoc
pyi
Expand All @@ -74,14 +77,11 @@ pyversions
redef
respx
resub
RUF
SLF
socio
sse
tagwords
taskupdate
testuuid
Tful
tiangolo
typeerror
vulnz
4 changes: 3 additions & 1 deletion README.md
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Expand Up @@ -48,7 +48,9 @@ Install the core SDK and any desired extras using your preferred package manager
| ------------------------ | ------------------------------------------ | -------------------------------------------- |
| **Core SDK** | `uv add a2a-sdk` | `pip install a2a-sdk` |
| **All Extras** | `uv add "a2a-sdk[all]"` | `pip install "a2a-sdk[all]"` |
| **HTTP Server** | `uv add "a2a-sdk[http-server]"` | `pip install "a2a-sdk[http-server]"` |
| **protobuf** | `uv add "a2a-sdk[proto]"` | `pip install "a2a-sdk[proto]"` |
| **JSON-RPC Server** | `uv add "a2a-sdk[jsonrpc-server]"` | `pip install "a2a-sdk[jsonrpc-server]"` |
| **HTTP (Rest) Server** | `uv add "a2a-sdk[http-server]"` | `pip install "a2a-sdk[http-server]"` |
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| **gRPC Support** | `uv add "a2a-sdk[grpc]"` | `pip install "a2a-sdk[grpc]"` |
| **OpenTelemetry Tracing**| `uv add "a2a-sdk[telemetry]"` | `pip install "a2a-sdk[telemetry]"` |
| **Encryption** | `uv add "a2a-sdk[encryption]"` | `pip install "a2a-sdk[encryption]"` |
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8 changes: 4 additions & 4 deletions pyproject.toml
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Expand Up @@ -11,8 +11,6 @@ dependencies = [
"httpx>=0.28.1",
"httpx-sse>=0.4.0",
"pydantic>=2.11.3",
"protobuf>=5.29.5",
"google-api-core>=1.26.0",
]

classifiers = [
Expand All @@ -29,9 +27,11 @@ classifiers = [
]

[project.optional-dependencies]
http-server = ["fastapi>=0.115.2", "sse-starlette", "starlette"]
proto = ["protobuf>=5.29.5"]
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@holtskinner holtskinner Oct 27, 2025

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I'm not sure protobuf really needs to be a separate dependency group from grpc

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@vinoo999 vinoo999 Oct 27, 2025

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can remove the extra altogether if you want to be explicit for the REST and gRPC servers. My goal was removing protobuf dependencies especially for JSON-RPC servers + clients.

If you prefer can do:

jsonrpc-server = ["fastapi>=0.115.2", "sse-starlette", "starlette"]
http-server = ["a2a-sdk[jsonrpc-server]", "protobuf>=5.29.5"]
grpc = ["grpcio>=1.60", "grpcio-tools>=1.60", "grpcio_reflection>=1.7.0", "google-api-core>=1.26.0", "protobuf>=5.29.5"]

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@vinoo999 vinoo999 Oct 27, 2025

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http-server is a bit confusing naming of the extra now that JSON-RPC is split out but needed for backward compatibility

jsonrpc-server = ["fastapi>=0.115.2", "sse-starlette", "starlette"]
http-server = ["a2a-sdk[jsonrpc-server]", "a2a-sdk[proto]"]
encryption = ["cryptography>=43.0.0"]
grpc = ["grpcio>=1.60", "grpcio-tools>=1.60", "grpcio_reflection>=1.7.0"]
grpc = ["grpcio>=1.60", "grpcio-tools>=1.60", "grpcio_reflection>=1.7.0", "google-api-core>=1.26.0", "a2a-sdk[proto]"]
telemetry = ["opentelemetry-api>=1.33.0", "opentelemetry-sdk>=1.33.0"]
postgresql = ["sqlalchemy[asyncio,postgresql-asyncpg]>=2.0.0"]
mysql = ["sqlalchemy[asyncio,aiomysql]>=2.0.0"]
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8 changes: 7 additions & 1 deletion src/a2a/utils/proto_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,13 @@

from typing import Any

from google.protobuf import json_format, struct_pb2

try:
from google.protobuf import json_format, struct_pb2
except ImportError as e:
raise ImportError(
'proto-utils requires protobuf. Install with "pip install a2a-sdk[proto]"'
) from e

from a2a import types
from a2a.grpc import a2a_pb2
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