kevinjqliu commented on code in PR #724:
URL:
https://github.com/apache/arrow-rs-object-store/pull/724#discussion_r3391252684
##########
Cargo.toml:
##########
@@ -82,12 +82,18 @@ futures-channel = {version = "0.3", features = ["sink"]}
[features]
default = ["fs"]
-cloud = ["serde", "serde_json", "quick-xml", "hyper", "reqwest",
"reqwest/stream", "chrono/serde", "base64", "rand", "ring", "http-body-util",
"form_urlencoded", "serde_urlencoded", "tokio"]
-azure = ["cloud", "httparse"]
+cloud = ["cloud-base", "reqwest"]
Review Comment:
i actually like `-base` more 😄 This is my mental model:
```
cloud-base = shared cloud code
*-base = provider-specific code without default reqwest
reqwest = built-in HTTP transport
cloud = compatibility alias for cloud-base + reqwest
aws/azure/gcp/http = provider base + reqwest
```
```
# Shared cloud/provider implementation dependencies.
# This intentionally does NOT include reqwest.
cloud-base = [
"serde",
"serde_json",
"quick-xml",
"hyper",
"chrono/serde",
"base64",
"rand",
"ring",
"http-body-util",
"form_urlencoded",
"serde_urlencoded",
"tokio",
]
# Built-in reqwest-based HTTP transport.
reqwest = [
"dep:reqwest",
"reqwest/stream",
]
# Compatibility/convenience alias.
# Historically, cloud meant "common cloud support", including reqwest.
# Keep that behavior for existing users.
cloud = [
"cloud-base",
"reqwest",
]
# Provider base features.
# These compile provider logic without forcing reqwest.
azure-base = [
"cloud-base",
"httparse",
]
gcp-base = [
"cloud-base",
"rustls-pki-types",
]
aws-base = [
"cloud-base",
"crc-fast",
"md-5",
]
http-base = [
"cloud-base",
]
# Batteries-included provider features.
# These preserve existing behavior: enabling aws/azure/gcp/http gives
# the default reqwest transport.
azure = [
"azure-base",
"reqwest",
]
gcp = [
"gcp-base",
"reqwest",
]
aws = [
"aws-base",
"reqwest",
]
http = [
"http-base",
"reqwest",
]
```
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