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JSON output in controller.

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This commit is contained in:
Valentin Bartenev
2017-04-11 00:29:47 +03:00
parent 6af2d1cfc6
commit cddbab6312
3 changed files with 385 additions and 15 deletions
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69
src/nxt_controller.c
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@@ -14,6 +14,8 @@
typedef struct {
nxt_http_request_parse_t parser;
size_t length;
nxt_conf_json_value_t *conf;
} nxt_controller_request_t;
@@ -41,7 +43,9 @@ static nxt_int_t nxt_controller_request_content_length(void *ctx,
static void nxt_controller_process_request(nxt_task_t *task,
nxt_event_conn_t *c, nxt_controller_request_t *r);
static nxt_int_t nxt_controller_request_body_parse(nxt_task_t *task,
nxt_event_conn_t *c);
nxt_event_conn_t *c, nxt_controller_request_t *r);
static void nxt_controller_conf_output(nxt_task_t *task, nxt_event_conn_t *c,
nxt_controller_request_t *r);
static nxt_http_fields_t nxt_controller_request_fields[] = {
@@ -513,29 +517,28 @@ static void
nxt_controller_process_request(nxt_task_t *task, nxt_event_conn_t *c,
nxt_controller_request_t *r)
{
nxt_str_t response;
nxt_buf_t *b;
static const u_char response_good[]
= "HTTP/1.0 200 OK\r\n\r\ndone\r\n";
static const nxt_str_t resp418
= nxt_string("HTTP/1.0 418 I'm a teapot\r\n\r\nerror\r\n");
static const u_char response_bad[]
= "HTTP/1.0 418 I'm a teapot\r\n\r\nerror\r\n";
if (nxt_controller_request_body_parse(task, c) == NXT_OK) {
nxt_str_set(&response, response_good);
} else {
nxt_str_set(&response, response_bad);
if (nxt_controller_request_body_parse(task, c, r) != NXT_OK) {
goto error;
}
b = nxt_buf_mem_alloc(c->mem_pool, response.length, 0);
nxt_controller_conf_output(task, c, r);
return;
error:
b = nxt_buf_mem_alloc(c->mem_pool, resp418.length, 0);
if (nxt_slow_path(b == NULL)) {
nxt_controller_conn_close(task, c, r);
return;
}
b->mem.free = nxt_cpymem(b->mem.free, response.start, response.length);
b->mem.free = nxt_cpymem(b->mem.free, resp418.start, resp418.length);
c->write = b;
c->write_state = &nxt_controller_conn_write_state;
@@ -545,7 +548,8 @@ nxt_controller_process_request(nxt_task_t *task, nxt_event_conn_t *c,
static nxt_int_t
nxt_controller_request_body_parse(nxt_task_t *task, nxt_event_conn_t *c)
nxt_controller_request_body_parse(nxt_task_t *task, nxt_event_conn_t *c,
nxt_controller_request_t *r)
{
nxt_buf_t *b;
nxt_conf_json_value_t *value;
@@ -558,5 +562,40 @@ nxt_controller_request_body_parse(nxt_task_t *task, nxt_event_conn_t *c)
return NXT_ERROR;
}
r->conf = value;
return NXT_OK;
}
static void
nxt_controller_conf_output(nxt_task_t *task, nxt_event_conn_t *c,
nxt_controller_request_t *r)
{
nxt_buf_t *b;
static const nxt_str_t head = nxt_string("HTTP/1.0 200 OK\r\n\r\n");
b = nxt_buf_mem_alloc(c->mem_pool, head.length, 0);
if (nxt_slow_path(b == NULL)) {
nxt_controller_conn_close(task, c, r);
return;
}
b->mem.free = nxt_cpymem(b->mem.free, head.start, head.length);
c->write = b;
b = nxt_conf_json_print(r->conf, c->mem_pool);
if (b == NULL) {
nxt_controller_conn_close(task, c, r);
return;
}
c->write->next = b;
c->write_state = &nxt_controller_conn_write_state;
nxt_event_conn_write(task->thread->engine, c);
return;
}