static ngx_int_t __on_write_master1_complete(
uint8_t method,
ngx_bool_t has_tb,
ngx_http_request_t *r,
ngx_http_hustdb_ha_write_ctx_t * ctx)
{
__update_error(method, r->headers_out.status, ctx);
ctx->base.peer = ctx->base.peer->next;
ngx_bool_t alive = ngx_http_peer_is_alive(ctx->base.peer->peer);
ngx_http_hustdb_ha_main_conf_t * mcf = hustdb_ha_get_module_main_conf(r);
if (mcf->debug_sync)
{
alive = false;
}
if (alive) // master2
{
ctx->state = STATE_WRITE_MASTER2;
return ngx_http_run_subrequest(r, &ctx->base.base, ctx->base.peer->peer);
}
// master2 dead
++ctx->error_count;
ctx->error_peer = ctx->base.peer;
if (ctx->error_count > 1) // both master1 & master2 fail
{
return hustdb_ha_send_response(NGX_HTTP_NOT_FOUND, NULL, NULL, r);
}
return __write_sync_data(method, has_tb, r, ctx);
}
// -------------------------------------------------------------
// |skip | 0 | 1 | 2 | 0 | 1 | 2 | 0 |
// -------------------------------------------------------------
// |err | 0 | 0 | 0 | 1 | 1 | 0 | 2 |
// -------------------------------------------------------------
// |action | 200 | 200 | 404 | 200&log | 404 | 404 | 404 |
// -------------------------------------------------------------
static ngx_int_t __send_write_response(
uint8_t method,
ngx_bool_t has_tb,
ngx_http_request_t *r,
ngx_http_hustdb_ha_write_ctx_t * ctx)
{
if (0 == ctx->skip_error_count && 1 == ctx->error_count)
{
return __write_sync_data(method, has_tb, r, ctx);
}
if (0 == ctx->skip_error_count && 0 == ctx->error_count)
{
return hustdb_ha_send_response(NGX_HTTP_OK, &ctx->base.version, NULL, r);
}
return hustdb_ha_send_response(NGX_HTTP_NOT_FOUND, NULL, NULL, r);
}
static ngx_int_t __on_write_master2_complete(
uint8_t method,
ngx_bool_t has_tb,
ngx_http_request_t *r,
ngx_http_hustdb_ha_write_ctx_t * ctx)
{
__update_error(method, r->headers_out.status, ctx);
if (ctx->error_count > 1) // both master1 & master2 fail
{
return hustdb_ha_send_response(NGX_HTTP_NOT_FOUND, NULL, NULL, r);
}
else if (1 == ctx->error_count) // master1 or master2 fail
{
return __write_sync_data(method, has_tb, r, ctx);
}
if (ctx->skip_error_count > 1) // both master1 and master2 return 404 for del
{
return hustdb_ha_send_response(NGX_HTTP_NOT_FOUND, NULL, NULL, r);
}
return hustdb_ha_send_response(NGX_HTTP_OK, ctx->base.version, NULL, r);
}
