Queue functions have to return eNextState in order for the caller to i.e. swap succes...

[citadel.git] / citadel / event_client.h

diff --git a/citadel/event_client.h b/citadel/event_client.h
index 9ed88c01e15401a16d00ed26242d34c08eb3653f..cb833e0683c6cdc7e45d7ebb13be51445e1e9630 100644 (file)
--- a/citadel/event_client.h
+++ b/citadel/event_client.h
@@ -14,11 +14,13 @@ typedef struct AsyncIO AsyncIO;
 typedef enum _eNextState {
        eSendDNSQuery,
        eReadDNSReply,
+       eDBQuery,
        eConnect,
        eSendReply, 
        eSendMore,
        eReadMessage, 
        eReadMore,
+       eReadPayload,
        eTerminateConnection,
        eAbort
 }eNextState;
@@ -28,6 +30,21 @@ typedef eReadState (*IO_LineReaderCallback)(AsyncIO *IO);
 typedef void (*ParseDNSAnswerCb)(AsyncIO*, unsigned char*, int);
 typedef void (*FreeDNSReply)(void *DNSData);
 
+
+typedef struct __ReadAsyncMsg {
+       StrBuf *MsgBuf;
+       size_t maxlen;          /* maximum message length */
+
+       const char *terminator; /* token signalling EOT */
+       long tlen;
+       int dodot;
+
+       int flushing;           /* if we read maxlen, read until nothing more arives and ignore this. */
+
+       int crlf;               /* CRLF newlines instead of LF */
+} ReadAsyncMsg;
+
+
 typedef struct _DNSQueryParts {
        ParseDNSAnswerCb DNS_CB;
        IO_CallBack PostDNS;
@@ -66,10 +83,12 @@ struct AsyncIO {
                RecvBuf;
 
        /* our events... */
-       ev_cleanup abort_by_shutdown; /* server wants to go down... */
+       ev_cleanup abort_by_shutdown, /* server wants to go down... */
+               db_abort_by_shutdown; /* server wants to go down... */
        ev_timer conn_fail,           /* connection establishing timed out */
                rw_timeout;           /* timeout while sending data */
        ev_idle unwind_stack,         /* get c-ares out of the stack */
+               db_unwind_stack,      /* wait for next db operation... */
                conn_fail_immediate;  /* unwind stack, but fail immediately. */
        ev_io recv_event,             /* receive data from the client */
                send_event,           /* send more data to the client */
@@ -83,7 +102,8 @@ struct AsyncIO {
                Terminate,    /* shutting down... */
                Timeout,      /* Timeout handler; may also be connection timeout */
                ConnFail,     /* What to do when one connection failed? */
-               ShutdownAbort;/* we're going down. make your piece. */ 
+               ShutdownAbort,/* we're going down. make your piece. */ 
+               NextDBOperation; /* Perform Database IO */
 
        IO_LineReaderCallback LineReader; /* if we have linereaders, maybe we want to read more lines before the real application logic is called? */
 
@@ -97,7 +117,7 @@ struct AsyncIO {
        evcurl_request_data HttpReq;
 
        /* Saving / loading a message async from / to disk */
-
+       ReadAsyncMsg *ReadMsg;
        struct CtdlMessage *AsyncMsg;
        struct recptypes *AsyncRcp;
        /* Custom data; its expected to contain  AsyncIO so we can save malloc()s... */
@@ -112,9 +132,9 @@ typedef struct _IOAddHandler {
 
 void FreeAsyncIOContents(AsyncIO *IO);
 
-void NextDBOperation(AsyncIO *IO, IO_CallBack CB);
-int QueueDBOperation(AsyncIO *IO, IO_CallBack CB);
-int QueueEventContext(AsyncIO *IO, IO_CallBack CB);
+eNextState NextDBOperation(AsyncIO *IO, IO_CallBack CB);
+eNextState QueueDBOperation(AsyncIO *IO, IO_CallBack CB);
+eNextState QueueEventContext(AsyncIO *IO, IO_CallBack CB);
 int ShutDownEventQueue(void);
 
 eNextState InitEventIO(AsyncIO *IO, 
@@ -153,6 +173,10 @@ int evcurl_init(AsyncIO *IO,
                IO_CallBack CallBack, 
                IO_CallBack Terminate);
 
+eNextState ReAttachIO(AsyncIO *IO, 
+                     void *pData, 
+                     int ReadFirst);
+
 void evcurl_handle_start(AsyncIO *IO);
 
 #endif /* __EVENT_CLIENT_H__ */