char *test_IOBuf_read_operations()
{
char *data = NULL;
int avail = 0;
Connection *conn = fake_conn("/dev/zero", O_RDONLY);
mu_assert(conn != NULL, "Failed to make fake /dev/zero connection.");
IOBuf *buf = conn->iob;
IOBuf_resize(buf, 31);
mu_assert(buf->len == 31, "Wrong size after resize.");
data = IOBuf_start(buf);
avail = IOBuf_avail(buf);
mu_assert(data != NULL, "Didn't get a data response on begin.");
mu_assert(data == buf->buf, "Begin on fresh iobuf should be at the beginning.");
mu_assert(avail == 0, "Should not have anything available yet.");
data = IOBuf_read(buf, 10, &avail);
mu_assert(data != NULL, "Should get something always.");
mu_assert(data == IOBuf_start(buf), "First read should work from start.");
mu_assert(data == buf->buf, "First read should be at start of internal buf.");
mu_assert(avail == 10, "Should get 10 bytes.");
// check compacting
mu_assert(!IOBuf_compact_needed(buf, 10), "Should not need compacting for 10.");
mu_assert(IOBuf_compact_needed(buf, 100), "SHOULD need compacting for 100.");
mu_assert(IOBuf_read_commit(buf, 10) != -1, "Failed to commit.");
data = IOBuf_start(buf);
avail = IOBuf_avail(buf);
mu_assert(data != NULL, "Didn't get a data response on begin.");
mu_assert(data != buf->buf, "Later reads should not be at the start.");
mu_assert(avail == 21, "Should have 21 bytes available in the buf already.");
data = IOBuf_read(buf, 10, &avail);
mu_assert(data != NULL, "Should get something always.");
mu_assert(avail == 10, "Should get 10 bytes.");
mu_assert(IOBuf_read_commit(buf, 10) != -1, "Finaly commit failed.");
data = IOBuf_start(buf);
avail = IOBuf_avail(buf);
mu_assert(data != NULL, "Didn't get a data response on begin.");
mu_assert(data != buf->buf, "Later reads should not be at the start.");
mu_assert(avail == 11, "Should have 11 bytes available in the buf already.");
// now test two reads, one that fits one that doesn't then commit
// remember this doesn't *return* anything, just a pointer to the start
data = IOBuf_read(buf, 5, &avail);
mu_assert(data != NULL, "Should get something always.");
mu_assert(avail == 5, "Should get 10 bytes.");
// ok we didn't want 5 we want 20, so this will cause a compact
data = IOBuf_read(buf, 20, &avail);
mu_assert(data != NULL, "Should get something always.");
mu_assert(avail == 20, "Should get 10 bytes.");
mu_assert(IOBuf_read_commit(buf, 21) != -1, "Final commit failed.");
debug("We've got %d avail after the last read.", buf->avail);
mu_assert(buf->avail == 10, "Should have 11 still in the queue.");
data = IOBuf_read_all(buf, 30, 1);
mu_assert(data != NULL, "Failed to read all.");
mu_assert(buf->avail == 1, "Should have 1 in the queue.");
data = IOBuf_read_some(buf, &avail);
mu_assert(data != NULL, "Failed to read some.");
mu_assert(buf->avail == 31, "Should be full.");
mu_assert(avail == 31, "And we should get the full amount.");
fake_conn_close(conn);
return NULL;
}
int Upload_stream(Connection *conn, Handler *handler, int content_len)
{
char *data = NULL;
int avail = 0;
int offset = 0;
int first_chunk = 1;
int rc;
hash_t *altheaders = NULL;
bstring offsetstr;
debug("max content length: %d, content_len: %d", MAX_CONTENT_LENGTH, content_len);
IOBuf_resize(conn->iob, MAX_CONTENT_LENGTH); // give us a good buffer size
while(content_len > 0) {
if(first_chunk) {
// read whatever's there
data = IOBuf_read_some(conn->iob, &avail);
} else if(conn->sendCredits > 0) {
// read up to credits
data = IOBuf_read(conn->iob, conn->sendCredits < content_len ? conn->sendCredits : content_len, &avail);
conn->sendCredits -= avail;
} else {
// sleep until we have credits
tasksleep(&conn->uploadRendez);
continue;
}
check(!IOBuf_closed(conn->iob), "Closed while reading from IOBuf.");
content_len -= avail;
offsetstr = bformat("%d", offset);
if(first_chunk) {
Request_set(conn->req, &UPLOAD_STREAM, offsetstr, 1);
if(content_len == 0) {
Request_set(conn->req, &UPLOAD_STREAM_DONE, bfromcstr("1"), 1);
}
} else {
altheaders = hash_create(2, (hash_comp_t)bstrcmp, bstr_hash_fun);
add_to_hash(altheaders, &UPLOAD_STREAM, offsetstr);
if(content_len == 0) {
add_to_hash(altheaders, &UPLOAD_STREAM_DONE, bfromcstr("1"));
}
}
rc = Connection_send_to_handler(conn, handler, data, avail, altheaders);
check_debug(rc == 0, "Failed to deliver to the handler.");
if(altheaders != NULL) {
hash_free_nodes(altheaders);
hash_destroy(altheaders);
altheaders = NULL;
}
check(IOBuf_read_commit(conn->iob, avail) != -1, "Commit failed while streaming.");
first_chunk = 0;
offset += avail;
}
check(content_len == 0, "Failed to write everything to the large upload tmpfile.");
return 0;
error:
return -1;
}
