static void composite_metadata_cb(void *user_data,
grpc_credentials_md *md_elems, size_t num_md,
grpc_credentials_status status) {
grpc_composite_credentials_metadata_context *ctx =
(grpc_composite_credentials_metadata_context *)user_data;
if (status != GRPC_CREDENTIALS_OK) {
ctx->cb(ctx->user_data, NULL, 0, status);
return;
}
/* Copy the metadata in the context. */
if (num_md > 0) {
size_t i;
for (i = 0; i < num_md; i++) {
grpc_credentials_md_store_add(ctx->md_elems, md_elems[i].key,
md_elems[i].value);
}
}
/* See if we need to get some more metadata. */
while (ctx->creds_index < ctx->composite_creds->inner.num_creds) {
grpc_credentials *inner_creds =
ctx->composite_creds->inner.creds_array[ctx->creds_index++];
if (grpc_credentials_has_request_metadata(inner_creds)) {
grpc_credentials_get_request_metadata(inner_creds, ctx->service_url,
composite_metadata_cb, ctx);
return;
}
}
/* We're done!. */
ctx->cb(ctx->user_data, ctx->md_elems->entries, ctx->md_elems->num_entries,
GRPC_CREDENTIALS_OK);
composite_md_context_destroy(ctx);
}
static void composite_metadata_cb(void *user_data, grpc_mdelem **md_elems,
size_t num_md,
grpc_credentials_status status) {
grpc_composite_credentials_metadata_context *ctx =
(grpc_composite_credentials_metadata_context *)user_data;
size_t i;
if (status != GRPC_CREDENTIALS_OK) {
ctx->cb(ctx->user_data, NULL, 0, status);
return;
}
/* Copy the metadata in the context. */
if (num_md > 0) {
ctx->md_elems = gpr_realloc(ctx->md_elems,
(ctx->num_md + num_md) * sizeof(grpc_mdelem *));
for (i = 0; i < num_md; i++) {
ctx->md_elems[i + ctx->num_md] = grpc_mdelem_ref(md_elems[i]);
}
ctx->num_md += num_md;
}
/* See if we need to get some more metadata. */
while (ctx->creds_index < ctx->composite_creds->inner.num_creds) {
grpc_credentials *inner_creds =
ctx->composite_creds->inner.creds_array[ctx->creds_index++];
if (grpc_credentials_has_request_metadata(inner_creds)) {
grpc_credentials_get_request_metadata(inner_creds, ctx->service_url,
composite_metadata_cb, ctx);
return;
}
}
/* We're done!. */
ctx->cb(ctx->user_data, ctx->md_elems, ctx->num_md, GRPC_CREDENTIALS_OK);
composite_md_context_destroy(ctx);
}
