feat: add Azure Blob Storage channel support

.github/workflows/e2e-azure-tests.yml

@@ -0,0 +1,71 @@
+on:
+  push:
+    branches: [main]
+  pull_request:
+    paths:
+      - crates/rattler_azure/**
+      - crates/rattler_config/**
+      - crates/rattler_index/**
+      - crates/rattler_networking/**
+      - crates/rattler_upload/**
+      # An opendal bump touches only the root manifest, and these tests are the
+      # canary for the opendal bug the upload path works around.
+      - Cargo.toml
+      - Cargo.lock
+      - test-data/**
+      - pixi.toml
+      - pixi.lock
+      - .github/workflows/e2e-azure-tests.yml
+
+name: E2E Azure Tests
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: false
+
+env:
+  RUST_LOG: info
+  RUST_BACKTRACE: 1
+  CARGO_TERM_COLOR: always
+
+jobs:
+  e2e-azurite-test:
+    name: E2E Index/Fetch [Azurite]
+    runs-on: ubuntu-latest
+
+    env:
+      # Enable sccache.
+      #
+      # This environment variable is picked up by pixi build which will then
+      # set up the rust build using sccache.
+      SCCACHE_GHA_ENABLED: "true"
+
+    # No secrets: the emulator's `devstoreaccount1` credentials are published
+    # constants, spelled out in the tests, and only ever reach loopback.
+    services:
+      azurite:
+        image: mcr.microsoft.com/azure-storage/azurite:3.36.0
+        ports:
+          - 10000:10000
+        options: >-
+          --health-cmd "nc -z 127.0.0.1 10000"
+          --health-interval 2s
+          --health-timeout 2s
+          --health-retries 30
+
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+        with:
+          submodules: recursive
+
+      - uses: prefix-dev/setup-pixi@5185adfbffb4bd703da3010310260805d89ebb11 # v0.9.6
+        with:
+          environments: default
+
+      - name: Run the Azurite integration tests
+        run: |
+          pixi run -vv -- cargo nextest run --run-ignored all \
+            --features rattler_networking/azure \
+            -p rattler_index --test azure_azurite \
+            -p rattler_networking --test azure_azurite_fetch

Cargo.toml

@@ -91,6 +91,11 @@ google-cloud-auth = { version = "1", default-features = false, features = [
 aws-config = { version = "1", default-features = false }
 aws-sdk-s3 = { version = "1", default-features = false }
 aws-smithy-http-client = { version = "1", default-features = false }
+reqsign-core = "3.0.1"
+reqsign-azure-storage = "3.0.1"
+reqsign-command-execute-tokio = "3.0.1"
+reqsign-file-read-tokio = "3.0.1"
+reqsign-http-send-reqwest = "4.0.1"
 aws-credential-types = { version = "1", default-features = false }
 hashbrown = "0.17"
 hex = "0.4"
@@ -148,6 +153,7 @@ rstest = { version = "0.26" }
 rstest_reuse = "0.7"
 rustix = { version = "1.1", default-features = false }
 simd-json = { version = "0.17", features = ["serde_impl"] }
+secrecy = "0.10"
 self_cell = "1"
 serde = { version = "1" }
 serde_bytes = { version = "0.11" }
@@ -211,6 +217,7 @@ coalesced_map = { path = "crates/coalesced_map", version = "=0.1.4", default-fea
 file_url = { path = "crates/file_url", version = "=0.3.2", default-features = false }
 path_resolver = { path = "crates/path_resolver", version = "=0.2.12", default-features = false }
 rattler = { path = "crates/rattler", version = "=0.48.0", default-features = false }
+rattler_azure = { path = "crates/rattler_azure", version = "=0.1.0", default-features = false }
 rattler_cache = { path = "crates/rattler_cache", version = "=0.10.4", default-features = false }
 rattler_conda_types = { path = "crates/rattler_conda_types", version = "=0.49.0", default-features = false }
 rattler_config = { path = "crates/rattler_config", version = "=0.6.2", default-features = false }