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nginx-0.0.1-2003-10-19-23:57:23 import

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This commit is contained in:
Igor Sysoev 2003-10-19 19:57:23 +00:00
parent 091f7d6e83
commit 13829b7316
4 changed files with 95 additions and 52 deletions
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119
src/event/ngx_event_proxy.c
View File

@ -12,14 +12,48 @@ ngx_inline static void ngx_add_after_partially_filled_hunk(ngx_chain_t **chain,
ngx_chain_t *ce);
int ngx_event_proxy(ngx_event_proxy_t *p, int do_write)
{
for ( ;; ) {
if (do_write) {
if (ngx_event_proxy_write_to_downstream(p) == NGX_ABORT) {
return NGX_ABORT;
}
}
p->read = 0;
if (ngx_event_proxy_read_upstream(p) == NGX_ABORT) {
return NGX_ABORT;
}
if (!p->read) {
break;
}
do_write = 1;
}
if (ngx_handle_read_event(p->upstream->read) == NGX_ERROR) {
return NGX_ABORT;
}
if (ngx_handle_write_event(p->downstream->write,
/* TODO: lowat */ 0) == NGX_ERROR) {
return NGX_ABORT;
}
return NGX_OK;
}
int ngx_event_proxy_read_upstream(ngx_event_proxy_t *p)
{
int n, rc, size;
ngx_hunk_t *h;
ngx_chain_t *chain, *ce, *te;
p->upstream_level++;
ngx_log_debug(p->log, "read upstream: %d" _ p->upstream->read->ready);
while (p->preread_hunks
@ -29,6 +63,7 @@ int ngx_event_proxy_read_upstream(ngx_event_proxy_t *p)
/* use the pre-read hunks if they exist */
p->read = 1;
chain = p->preread_hunks;
p->preread_hunks = NULL;
n = p->preread_size;
@ -57,6 +92,7 @@ int ngx_event_proxy_read_upstream(ngx_event_proxy_t *p)
} else if (p->upstream->read->eof
&& p->upstream->read->available == 0) {
p->upstream_eof = 1;
p->read = 1;
break;
}
@ -146,6 +182,9 @@ int ngx_event_proxy_read_upstream(ngx_event_proxy_t *p)
break;
}
/* TODO THINK about eof */
p->read = 1;
if (n == 0) {
p->free_raw_hunks = chain;
p->upstream_eof = 1;
@ -190,33 +229,8 @@ int ngx_event_proxy_read_upstream(ngx_event_proxy_t *p)
p->free_raw_hunks = p->free_raw_hunks->next;
}
if (p->cachable) {
if (p->in) {
rc = ngx_event_proxy_write_chain_to_temp_file(p);
if (rc != NGX_OK) {
return rc;
}
}
if (p->out && p->downstream->write->ready) {
if (ngx_event_proxy_write_to_downstream(p) == NGX_ABORT) {
return NGX_ABORT;
}
}
} else if ((p->out || p->in) && p->downstream->write->ready) {
if (ngx_event_proxy_write_to_downstream(p) == NGX_ABORT) {
return NGX_ABORT;
}
}
p->upstream_level--;
ngx_log_debug(p->log, "upstream level: %d" _ p->upstream_level);
if (p->upstream_level == 0) {
if (ngx_handle_read_event(p->upstream->read) == NGX_ERROR) {
if (p->cachable && p->in) {
if (ngx_event_proxy_write_chain_to_temp_file(p) == NGX_ABORT) {
return NGX_ABORT;
}
}
@ -231,7 +245,20 @@ int ngx_event_proxy_write_to_downstream(ngx_event_proxy_t *p)
ngx_hunk_t *h;
ngx_chain_t *out, *ce, *te;
while (p->downstream->write->ready) {
ngx_log_debug(p->log, "write downstream: %d" _ p->downstream->write->ready);
for ( ;; ) {
if ((p->upstream_eof || p->upstream_error || p->upstream_done)
&& p->out == NULL && p->in == NULL)
{
p->downstream_done = 1;
break;
}
if (!p->downstream->write->ready) {
break;
}
if (p->out) {
out = p->out;
@ -262,6 +289,10 @@ int ngx_event_proxy_write_to_downstream(ngx_event_proxy_t *p)
rc = p->output_filter(p->output_ctx, out->hunk);
if (rc == NGX_ERROR) {
/* TODO */
}
ngx_chain_update_chains(&p->free, &p->busy, &out);
/* calculate p->busy_len */
@ -287,18 +318,12 @@ int ngx_event_proxy_write_to_downstream(ngx_event_proxy_t *p)
ce->hunk->shadow = NULL;
}
#if 0 /* TODO THINK p->read_priority ??? */
if (p->upstream->read->ready) {
if (ngx_event_proxy_read_upstream(p) == NGX_ERROR) {
return NGX_ABORT;
}
return;
}
}
#endif
if (p->downstream_level == 0) {
if (ngx_handle_write_event(p->downstream->write,
/* TODO: lowat */ 0) == NGX_ERROR) {
return NGX_ABORT;
}
}
if (p->upstream_done && p->in == NULL && p->out == NULL) {
@ -313,7 +338,7 @@ static int ngx_event_proxy_write_chain_to_temp_file(ngx_event_proxy_t *p)
{
int rc, size;
ngx_hunk_t *h;
ngx_chain_t *ce, *next, *in, **last;
ngx_chain_t *ce, *te, *next, *in, **last, **last_free;
ngx_log_debug(p->log, "write to file");
@ -362,6 +387,13 @@ static int ngx_event_proxy_write_chain_to_temp_file(ngx_event_proxy_t *p)
return NGX_ABORT;
}
for (last_free = &p->free_raw_hunks;
*last_free != NULL;
last_free = &(*last)->next)
{
/* void */
}
for (ce = p->in; ce; ce = next) {
next = ce->next;
ce->next = NULL;
@ -373,11 +405,14 @@ static int ngx_event_proxy_write_chain_to_temp_file(ngx_event_proxy_t *p)
p->temp_offset += h->last - h->pos;
h->file_last = p->temp_offset;
ngx_chain_add_ce(p->out, p->last_out, ce);
if (h->type & NGX_HUNK_LAST_SHADOW) {
h->shadow->last = h->shadow->pos = h->shadow->start;
ngx_alloc_ce_and_set_hunk(te, h->shadow, p->pool, NGX_ABORT);
*last_free = te;
last_free = &te->next;
}
ngx_chain_add_ce(p->out, p->last_out, ce);
}
p->in = in;

9
src/event/ngx_event_proxy.h
View File

@ -36,6 +36,7 @@ struct ngx_event_proxy_s {
ngx_event_proxy_output_filter_pt output_filter;
void *output_ctx;
unsigned read:1;
unsigned cachable:1;
unsigned upstream_done:1;
unsigned upstream_eof:1;
@ -43,9 +44,6 @@ struct ngx_event_proxy_s {
unsigned downstream_done:1;
unsigned downstream_error:1;
int upstream_level;
int downstream_level;
int hunks;
ngx_bufs_t bufs;
@ -71,9 +69,12 @@ struct ngx_event_proxy_s {
};
int ngx_event_proxy(ngx_event_proxy_t *p, int do_write);
int ngx_event_proxy_copy_input_filter(ngx_event_proxy_t *p, ngx_hunk_t *hunk);
/* STUB */
int ngx_event_proxy_read_upstream(ngx_event_proxy_t *p);
int ngx_event_proxy_write_to_downstream(ngx_event_proxy_t *p);
int ngx_event_proxy_copy_input_filter(ngx_event_proxy_t *p, ngx_hunk_t *hunk);
#endif /* _NGX_EVENT_PROXY_H_INCLUDED_ */

17
src/http/modules/proxy/ngx_http_proxy_handler.c
View File

@ -775,7 +775,7 @@ static void ngx_http_proxy_process_upstream(ngx_event_t *rev)
return;
}
if (ngx_event_proxy_read_upstream(p->event_proxy) == NGX_ABORT) {
if (ngx_event_proxy(p->event_proxy, 0) == NGX_ABORT) {
ngx_http_proxy_finalize_request(p, 0);
return;
}
@ -784,7 +784,8 @@ static void ngx_http_proxy_process_upstream(ngx_event_t *rev)
|| p->event_proxy->upstream_error
|| p->event_proxy->upstream_done)
{
ngx_http_proxy_finalize_request(p, ngx_http_send_last(p->request));
ngx_http_proxy_close_connection(c);
p->upstream.connection = NULL;
return;
}
@ -795,11 +796,13 @@ static void ngx_http_proxy_process_upstream(ngx_event_t *rev)
static void ngx_http_proxy_process_downstream(ngx_event_t *wev)
{
ngx_connection_t *c;
ngx_http_request_t *r;
ngx_http_proxy_ctx_t *p;
c = wev->data;
p = c->data;
r = c->data;
p = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
ngx_log_debug(wev->log, "http proxy process downstream");
if (wev->timedout) {
@ -807,13 +810,15 @@ static void ngx_http_proxy_process_downstream(ngx_event_t *wev)
return;
}
if (ngx_event_proxy_write_to_downstream(p->event_proxy) == NGX_ABORT) {
if (ngx_event_proxy(p->event_proxy, 1) == NGX_ABORT) {
ngx_http_proxy_finalize_request(p, 0);
return;
}
if (p->event_proxy->downstream_done) {
ngx_http_proxy_finalize_request(p, 0);
ngx_log_debug(wev->log, "http proxy downstream done");
ngx_http_proxy_finalize_request(p, r->main ? 0:
ngx_http_send_last(p->request));
return;
}

2
src/os/unix/ngx_readv_chain.c
View File

@ -17,6 +17,8 @@ ssize_t ngx_readv_chain(ngx_connection_t *c, ngx_chain_t *entry)
ngx_init_array(io, c->pool, 10, sizeof(struct iovec), NGX_ERROR);
/* TODO: coalesce the neighbouring chain entries */
while (entry) {
ngx_test_null(iov, ngx_push_array(&io), NGX_ERROR);
iov->iov_base = entry->hunk->pos;