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/*
 *
 * Copyright 2015, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#include <grpc/census.h>
#include "src/core/ext/census/base_resources.h"
#include "src/core/ext/census/resource.h"

static int features_enabled = CENSUS_FEATURE_NONE;

int census_initialize(int features) {
  if (features_enabled != CENSUS_FEATURE_NONE) {
    // Must have been a previous call to census_initialize; return error
    return -1;
  }
  features_enabled = features & CENSUS_FEATURE_ALL;
  if (features & CENSUS_FEATURE_STATS) {
    initialize_resources();
    define_base_resources();
  }

  return features_enabled;
}

void census_shutdown(void) {
  if (features_enabled & CENSUS_FEATURE_STATS) {
    shutdown_resources();
  }
  features_enabled = CENSUS_FEATURE_NONE;
}

int census_supported(void) {
  /* TODO(aveitch): improve this as we implement features... */
  return CENSUS_FEATURE_NONE;
}

int census_enabled(void) { return features_enabled; }