/* ====================================================================

 *    Licensed to the Apache Software Foundation (ASF) under one

 *    or more contributor license agreements.  See the NOTICE file

 *    distributed with this work for additional information

 *    regarding copyright ownership.  The ASF licenses this file

 *    to you under the Apache License, Version 2.0 (the

 *    "License"); you may not use this file except in compliance

 *    with the License.  You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 *    Unless required by applicable law or agreed to in writing,

 *    software distributed under the License is distributed on an

 *    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

 *    KIND, either express or implied.  See the License for the

 *    specific language governing permissions and limitations

 *    under the License.

 * ====================================================================

 */

#include <apr_pools.h>

#include "serf.h"

#include "serf_bucket_util.h"

typedef struct {

    serf_bucket_t *stream;

} barrier_context_t;

serf_bucket_t *serf_bucket_barrier_create(

    serf_bucket_t *stream,

    serf_bucket_alloc_t *allocator)

{

    barrier_context_t *ctx;

    ctx = serf_bucket_mem_alloc(allocator, sizeof(*ctx));

    ctx->stream = stream;

    return serf_bucket_create(&serf_bucket_type_barrier, allocator, ctx);

}

static apr_status_t serf_barrier_read(serf_bucket_t *bucket,

                                     apr_size_t requested,

                                     const char **data, apr_size_t *len)

{

    barrier_context_t *ctx = bucket->data;

    return serf_bucket_read(ctx->stream, requested, data, len);

}

static apr_status_t serf_barrier_read_iovec(serf_bucket_t *bucket,

                                            apr_size_t requested,

                                            int vecs_size, struct iovec *vecs,

                                            int *vecs_used)

{

    barrier_context_t *ctx = bucket->data;

    return serf_bucket_read_iovec(ctx->stream, requested, vecs_size, vecs,

                                  vecs_used);

}

static apr_status_t serf_barrier_readline(serf_bucket_t *bucket,

                                         int acceptable, int *found,

                                         const char **data, apr_size_t *len)

{

    barrier_context_t *ctx = bucket->data;

    return serf_bucket_readline(ctx->stream, acceptable, found, data, len);

}

static apr_status_t serf_barrier_peek(serf_bucket_t *bucket,

                                     const char **data,

                                     apr_size_t *len)

{

    barrier_context_t *ctx = bucket->data;

    return serf_bucket_peek(ctx->stream, data, len);

}

static void serf_barrier_destroy(serf_bucket_t *bucket)

{

    /* The intent of this bucket is not to let our wrapped buckets be

     * destroyed. */

    /* The option is for us to go ahead and 'eat' this bucket now,

     * or just ignore the deletion entirely.

     */

    serf_default_destroy_and_data(bucket);

}

const serf_bucket_type_t serf_bucket_type_barrier = {

    "BARRIER",

    serf_barrier_read,

    serf_barrier_readline,

    serf_barrier_read_iovec,

    serf_default_read_for_sendfile,

    serf_default_read_bucket,

    serf_barrier_peek,

    serf_barrier_destroy,

};