[Review][C] Export the ability to get/set the log level to the C API

c/include/cuvs/core/c_api.h

@@ -18,6 +18,7 @@
 
 #include <cuda_runtime.h>
 #include <dlpack/dlpack.h>
+#include <rapids_logger/log_levels.h>
 #include <stdbool.h>
 #include <stdint.h>
 
@@ -48,6 +49,35 @@ void cuvsSetLastErrorText(const char* error);
 
 /** @} */
 
+/**
+ * @defgroup log_c cuVS Logging
+ * @{
+ */
+
+/**
+ * @brief An enum denoting log levels
+ *
+ */
+typedef enum {
+  CUVS_LOG_LEVEL_TRACE    = RAPIDS_LOGGER_LOG_LEVEL_TRACE,
+  CUVS_LOG_LEVEL_DEBUG    = RAPIDS_LOGGER_LOG_LEVEL_DEBUG,
+  CUVS_LOG_LEVEL_INFO     = RAPIDS_LOGGER_LOG_LEVEL_INFO,
+  CUVS_LOG_LEVEL_WARN     = RAPIDS_LOGGER_LOG_LEVEL_WARN,
+  CUVS_LOG_LEVEL_ERROR    = RAPIDS_LOGGER_LOG_LEVEL_ERROR,
+  CUVS_LOG_LEVEL_CRITICAL = RAPIDS_LOGGER_LOG_LEVEL_CRITICAL,
+  CUVS_LOG_LEVEL_OFF      = RAPIDS_LOGGER_LOG_LEVEL_OFF
+} cuvsLogLevel_t;
+
+/** @brief Returns the current log level
+ */
+cuvsLogLevel_t cuvsGetLogLevel();
+
+/** @brief Sets the log level
+ */
+void cuvsSetLogLevel(cuvsLogLevel_t);
+
+/** @} */
+
 /**
  * @defgroup resources_c cuVS Resources Handle
  * @{

c/src/core/c_api.cpp

@@ -23,6 +23,7 @@
 #include <raft/core/resource/resource_types.hpp>
 #include <raft/core/resources.hpp>
 #include <raft/util/cudart_utils.hpp>
+#include <rapids_logger/logger.hpp>
 #include <rmm/cuda_stream_view.hpp>
 #include <rmm/mr/device/device_memory_resource.hpp>
 #include <rmm/mr/device/managed_memory_resource.hpp>
@@ -213,6 +214,16 @@ extern "C" const char* cuvsGetLastErrorText()
   return last_error_text.empty() ? NULL : last_error_text.c_str();
 }
 
+extern "C" void cuvsSetLogLevel(cuvsLogLevel_t verbosity)
+{
+  raft::default_logger().set_level(static_cast<rapids_logger::level_enum>(verbosity));
+}
+
+extern "C" cuvsLogLevel_t cuvsGetLogLevel()
+{
+  return static_cast<cuvsLogLevel_t>(raft::default_logger().level());
+}
+
 extern "C" void cuvsSetLastErrorText(const char* error) { last_error_text = error ? error : ""; }
 
 extern "C" cuvsError_t cuvsVersionGet(uint16_t* major, uint16_t* minor, uint16_t* patch)

docs/source/c_api/core_c_api.rst

@@ -22,3 +22,11 @@ Error Handling
     :project: cuvs
     :members:
     :content-only:
+
+Logging
+-------
+
+.. doxygengroup:: log_c
+    :project: cuvs
+    :members:
+    :content-only:

java/panama-bindings/generate-bindings.sh

@@ -19,22 +19,33 @@ else
   exit 1
 fi
 
+if [ -n "${RAPIDS_LOGGER_INCLUDE_DIR:-}" ]; then
+  echo "Using user-defined RAPIDS_LOGGER_INCLUDE_DIR"
+elif [ -n "${CONDA_PREFIX:-}" ]; then
+  RAPIDS_LOGGER_INCLUDE_DIR="${CONDA_PREFIX}/include"
+else
+  echo "Couldn't find a suitable CUDA include directory."
+  exit 1
+fi
+
+PATH="$(pwd)/jextract-22/bin/:${PATH}"
+export PATH
+
 if [[ $(command -v jextract) == "" ]];
 then
   JEXTRACT_FILENAME="openjdk-22-jextract+6-47_linux-x64_bin.tar.gz"
   JEXTRACT_DOWNLOAD_URL="https://download.java.net/java/early_access/jextract/22/6/${JEXTRACT_FILENAME}"
   echo "jextract doesn't exist. Downloading it from $JEXTRACT_DOWNLOAD_URL.";
   wget -c $JEXTRACT_DOWNLOAD_URL
   tar -xvf ./"${JEXTRACT_FILENAME}"
-  PATH="$(pwd)/jextract-22/bin/:${PATH}"
-  export PATH
   echo "jextract downloaded to $(pwd)/jextract-22"
 fi
 
 # Use Jextract utility to generate panama bindings
 jextract \
  --include-dir "${REPODIR}"/java/internal/build/bindings/include/ \
  --include-dir "${CUDA_INCLUDE_DIR}" \
+ --include-dir "${RAPIDS_LOGGER_INCLUDE_DIR}" \
  --output "${REPODIR}/java/cuvs-java/src/main/java22/" \
  --target-package ${TARGET_PACKAGE} \
  --library cuvs_c \