cleanup: remove deprecated targets and rules (#8413)

And the CI scripts used to test them.

BUILD.bazel

@@ -179,15 +179,6 @@ cc_library(
     ],
 )
 
-cc_library(
-    name = "bigtable_client",
-    deprecation = "this target will be removed on or around 2022-02-15, please use //:bigtable instead.",
-    tags = ["manual"],
-    deps = [
-        "//google/cloud/bigtable:bigtable_client_internal",
-    ],
-)
-
 cc_library(
     name = "iam",
     deps = [
@@ -225,15 +216,6 @@ cc_library(
     ],
 )
 
-cc_library(
-    name = "pubsub_client",
-    deprecation = "this target will be removed on or around 2022-02-15, please use //:pubsub instead.",
-    tags = ["manual"],
-    deps = [
-        "//google/cloud/pubsub:google_cloud_cpp_pubsub",
-    ],
-)
-
 cc_library(
     name = "spanner",
     deps = [
@@ -248,15 +230,6 @@ cc_library(
     ],
 )
 
-cc_library(
-    name = "spanner_client",
-    deprecation = "this target will be removed on or around 2022-02-15, please use //:spanner instead.",
-    tags = ["manual"],
-    deps = [
-        "//google/cloud/spanner:google_cloud_cpp_spanner",
-    ],
-)
-
 cc_library(
     name = "storage",
     deps = [
@@ -271,12 +244,3 @@ cc_library(
         "//google/cloud/storage:google_cloud_cpp_storage_grpc",
     ],
 )
-
-cc_library(
-    name = "storage_client",
-    deprecation = "this target will be removed on or around 2022-02-15, please use //:storage instead.",
-    tags = ["manual"],
-    deps = [
-        "//google/cloud/storage:google_cloud_cpp_storage",
-    ],
-)

CHANGELOG.md

@@ -4,41 +4,6 @@
 
 <!-- Keep these sorted by estimated date -->
 
-<details>
-<summary>2022-02-15: retiring legacy targets and rules</summary>
-<br>
-
-* In 2022-02-15 (or around that time) we are planning to remove a number of
-  backwards compatibility targets names for Bazel and CMake.  Specifically:
-  - **Bazel Users:** applications should use the targets at the top-level
-    directory, e.g. `//:bigtable`, or `//:pubsub`.
-    - All other Bazel targets will be marked as package private in or around
-      2022-02-15.
-  - **CMake Users:** applications should use the
-    `google-cloud-cpp::*` targets (e.g. `google-cloud-cpp::pubsub`).
-    - The legacy CMake targets generate warnings if using CMake >= 3.18 (the
-      earliest version that supports deprecation warnings).
-    - All exported targets without a `google-cloud-cpp::` prefix will be
-      retired in or around 2022-02-15. These include, but are not limited to:
-      - Any target starting with `googleapis-c++::`
-      - Any exported targets without a prefix, including:
-        `google_cloud_cpp_common`, `google_cloud_cpp_grpc_utils`,
-        `bigtable_client`, `bigtable_protos`, `firestore_client`,
-        `pubsub_client`, `storage_client`, `spanner_client`.
-      - Some target aliases, including `bigtable::client`, `bigtable::protos`,
-        `firestore::client`
-  - **pkg-config users:** applications should use the modules starting with
-    `google_cloud_cpp`
-    - All other modules will be retired in or around 2022-02-15
-  - **Direct users of -l${library} flags:** we do not recommend that
-    applications uses `-l` flags directly, please use `pkg-config` and/or
-    the target names under CMake or Bazel. We make this recommendation because
-    we do not know of any mechanism to provide backwards compatibility for such
-    flags.
-  - If you have any feedback about this change please add comments in
-    [#5726](https://github.com/googleapis/google-cloud-cpp/issues/5726)
-</details>
-
 <details>
 <summary>2022-04-01: retiring legacy IAM functions</summary>
 <br>
@@ -103,6 +68,35 @@ https://github.com/googleapis/google-cloud-cpp/issues/8234.
 
 ## v1.37.0 - TBD
 
+**BREAKING CHANGES**
+
+* As previously announced, we are removing certain legacy CMake targets and
+  Bazel rules in this release.
+  - **Bazel Users:** applications should use the targets at the top-level
+    directory, e.g. `//:bigtable`, or `//:pubsub`.  Targets in each directory
+    (e.g. `//google/cloud/bigtable:bigtable_client`) are now retired or marked
+    private.
+  - **CMake Users:** applications should use the
+    `google-cloud-cpp::*` targets (e.g. `google-cloud-cpp::pubsub`).
+    - All exported targets without a `google-cloud-cpp::` prefix are retired.
+      These include, but are not limited to:
+      - Any target starting with `googleapis-c++::`
+      - Any exported targets without a prefix, including:
+        `google_cloud_cpp_common`, `google_cloud_cpp_grpc_utils`,
+        `bigtable_client`, `bigtable_protos`, `firestore_client`,
+        `pubsub_client`, `storage_client`, `spanner_client`.
+      - Some target aliases, including `bigtable::client`, `bigtable::protos`
+  - **pkg-config users:** applications should use the modules starting with
+    `google_cloud_cpp`. All other modules are now retired.
+  - **Direct users of -l${library} flags:** we do not recommend that
+    applications uses `-l` flags directly, please use `pkg-config` and/or
+    the target names under CMake or Bazel. We make this recommendation because
+    we do not know of any mechanism to provide backwards compatibility for such
+    flags.
+  - More details about the rationale for these changes in [#5726].
+
+[#5726]: https://github.com/googleapis/google-cloud-cpp/issues/5726
+
 ### [BigQuery](https://github.com/googleapis/google-cloud-cpp/blob/main/google/cloud/bigquery/README.md)
 
 The library has been expanded to include the following services:

README.md

@@ -257,11 +257,6 @@ use, e.g.,`//:spanner`. Experimental rules have `experimental` in their name,
 e.g. `//:experimental-logging`. As previously stated, experimental rules are
 subject to change or removal without notice.
 
-Previously some of the rules in subdirectories
-(e.g. `//google/cloud/bigtable:bigtable_client`) had public visibility. These
-rules are deprecated as of 2021-02-15, and will be become inaccessible
-(or removed) on or shortly after **2022-02-15**.
-
 ### CMake targets and packages
 
 Only CMake packages starting with the `google_cloud_cpp_` prefix are intended
@@ -270,19 +265,10 @@ for customer use. Experimental targets have `experimental` in their name (e.g.
 `google-cloud-cpp::experimental-logging`). As previously stated, experimental
 targets are subject to change or removal without notice.
 
-In previous versions we released packages with other prefixes (or without
-specific prefixes), these are deprecated as of 2021-02-15, and will be retired
-on or shortly after **2022-02-15**. Same applies to any targets exported with
-other prefixes (or without an specific prefix).
-
 ### pkg-config modules
 
 Only modules starting with `google_cloud_cpp_` are intended for customer use.
 
-In previous versions we released modules with other prefixes (or without
-specific prefixes), these are deprecated as of 2021-02-15, and will be retired
-on or shortly after **2022-02-15**.
-
 ### Unsupported use cases
 
 We try to provide stable names for the previously described mechanisms:

ci/cloudbuild/builds/cmake-install.sh

@@ -111,7 +111,6 @@ expected_dirs+=(
   ./include/google/type
   ./include/grafeas
   ./include/grafeas/v1
-  ./lib64/cmake/bigtable_client
   ./lib64/cmake/google_cloud_cpp_bigtable
   ./lib64/cmake/google_cloud_cpp_common
   ./lib64/cmake/google_cloud_cpp_googleapis
@@ -120,10 +119,6 @@ expected_dirs+=(
   ./lib64/cmake/google_cloud_cpp_pubsub
   ./lib64/cmake/google_cloud_cpp_rest_internal
   ./lib64/cmake/google_cloud_cpp_spanner
-  ./lib64/cmake/googleapis
-  ./lib64/cmake/pubsub_client
-  ./lib64/cmake/spanner_client
-  ./lib64/cmake/storage_client
   ./lib64/pkgconfig
 )
 
@@ -165,15 +160,13 @@ while IFS= read -r -d '' f; do
 done < <(find "${INSTALL_PREFIX}" -type f -print0)
 
 mapfile -t ctest_args < <(ctest::common_args)
-for repo_root in "ci/verify_current_targets" "ci/verify_deprecated_targets"; do
-  out_dir="cmake-out/$(basename "${repo_root}")-out"
-  rm -f "${out_dir}/CMakeCache.txt"
-  io::log_h2 "Verifying CMake targets in repo root: ${repo_root}"
-  cmake --log-level WARNING -GNinja -DCMAKE_PREFIX_PATH="${INSTALL_PREFIX}" \
-    -S "${repo_root}" -B "${out_dir}" -Wno-dev
-  cmake --build "${out_dir}"
-  env -C "${out_dir}" ctest "${ctest_args[@]}"
-done
+out_dir="cmake-out/verify_current_targets-out"
+rm -f "${out_dir}/CMakeCache.txt"
+io::log_h2 "Verifying CMake targets in repo root: ci/verify_current_targets"
+cmake --log-level WARNING -GNinja -DCMAKE_PREFIX_PATH="${INSTALL_PREFIX}" \
+  -S ci/verify_current_targets -B "${out_dir}" -Wno-dev
+cmake --build "${out_dir}"
+env -C "${out_dir}" ctest "${ctest_args[@]}"
 
 # Tests the installed artifacts by building and running the quickstarts.
 # shellcheck disable=SC2046

ci/generate-markdown/generate-readme.sh

@@ -250,11 +250,6 @@ use, e.g.,`//:spanner`. Experimental rules have `experimental` in their name,
 e.g. `//:experimental-logging`. As previously stated, experimental rules are
 subject to change or removal without notice.
 
-Previously some of the rules in subdirectories
-(e.g. `//google/cloud/bigtable:bigtable_client`) had public visibility. These
-rules are deprecated as of 2021-02-15, and will be become inaccessible
-(or removed) on or shortly after **2022-02-15**.
-
 ### CMake targets and packages
 
 Only CMake packages starting with the `google_cloud_cpp_` prefix are intended
@@ -263,19 +258,10 @@ for customer use. Experimental targets have `experimental` in their name (e.g.
 `google-cloud-cpp::experimental-logging`). As previously stated, experimental
 targets are subject to change or removal without notice.
 
-In previous versions we released packages with other prefixes (or without
-specific prefixes), these are deprecated as of 2021-02-15, and will be retired
-on or shortly after **2022-02-15**. Same applies to any targets exported with
-other prefixes (or without an specific prefix).
-
 ### pkg-config modules
 
 Only modules starting with `google_cloud_cpp_` are intended for customer use.
 
-In previous versions we released modules with other prefixes (or without
-specific prefixes), these are deprecated as of 2021-02-15, and will be retired
-on or shortly after **2022-02-15**.
-
 ### Unsupported use cases
 
 We try to provide stable names for the previously described mechanisms:

ci/verify_current_targets/CMakeLists.txt

@@ -60,6 +60,7 @@ foreach (library ${experimental_libraries})
 endforeach ()
 
 foreach (library ${common_libraries} ${ga_libraries} ${experimental_libraries})
+    message("library=${library}")
     pkg_check_modules(${library} IMPORTED_TARGET REQUIRED
                       google_cloud_cpp_${library})
     add_test_case(test_pc_${library} PkgConfig::${library})

ci/verify_deprecated_targets/BUILD.bazel

@@ -24,14 +24,6 @@ licenses(["notice"])  # Apache 2.0
 DEPRECATED_TARGETS = [
     "google/cloud:google_cloud_cpp_common",
     "google/cloud:google_cloud_cpp_grpc_utils",
-    "google/cloud/bigtable:bigtable_client",
-    "google/cloud/pubsub:pubsub_client",
-    "google/cloud/spanner:spanner_client",
-    "google/cloud/storage:storage_client",
-    ":bigtable_client",
-    ":pubsub_client",
-    ":spanner_client",
-    ":storage_client",
 ]
 
 [cc_test(