changed c return value of update price to indicate aggregation (#190)

* changed c return value of update price to indicate aggregation

* forgot to add bindings

* removed the need for casting

* fixed update_no_fail

* removed unnecessary docker packages

Author: majabbour

docker/Dockerfile

@@ -26,8 +26,9 @@ RUN apt-get install -qq \
   qtchooser \
   qt5-qmake \
   qtbase5-dev-tools \
-  libqt5websockets5-dev
-
+  libqt5websockets5-dev\
+  libclang-dev
+  
 # Install jcon-cpp library
 RUN git clone https://github.com/joncol/jcon-cpp.git /jcon-cpp && cd /jcon-cpp && git checkout 2235654e39c7af505d7158bf996e47e37a23d6e3 && mkdir build && cd build && cmake .. && make -j4 && make install
 

program/c/src/oracle/oracle.c

@@ -486,10 +486,11 @@ static uint64_t upd_price( SolParameters *prm, SolAccountInfo *ka )
        cptr->pub_slot_ <= fptr->pub_slot_ ) {
     return ERROR_INVALID_ARGUMENT;
   }
-
+  bool updated_aggregate = false;
   // update aggregate price as necessary
   if ( sptr->slot_ > pptr->agg_.pub_slot_ ) {
     upd_aggregate( pptr, sptr->slot_, sptr->unix_timestamp_ );
+    updated_aggregate = true;
   }
 
   // update component price if required
@@ -511,13 +512,15 @@ static uint64_t upd_price( SolParameters *prm, SolAccountInfo *ka )
     fptr->status_   = status;
     fptr->pub_slot_ = cptr->pub_slot_;
   }
+  if (updated_aggregate){
+    return SUCCESSFULLY_UPDATED_AGGREGATE;
+  }
   return SUCCESS;
 }
 
 static uint64_t upd_price_no_fail_on_error( SolParameters *prm, SolAccountInfo *ka )
 {
-  upd_price( prm, ka );
-  return SUCCESS;
+  return upd_price( prm, ka ) == SUCCESSFULLY_UPDATED_AGGREGATE? SUCCESSFULLY_UPDATED_AGGREGATE : SUCCESS;
 }
 
 static uint64_t dispatch( SolParameters *prm, SolAccountInfo *ka )

program/c/src/oracle/oracle.h

@@ -6,6 +6,13 @@
 extern "C" {
 #endif
 
+//a new custom return value to indicate to rust that aggregate was updated
+//this triggers SMA trackers to update
+//values 0-14 are defined in solana_sdk.h
+//used consts instead of define because bingen always turns
+// defines to u32 (even with ULL suffix)
+const uint64_t SUCCESSFULLY_UPDATED_AGGREGATE = 15ULL;
+
 // magic number at head of account
 #define PC_MAGIC 0xa1b2c3d4
 

program/c/src/oracle/test_oracle.c

@@ -409,7 +409,7 @@ Test( oracle, upd_price ) {
     .data_len   = sizeof( idata ),
     .program_id = &p_id
   };
-  cr_assert( SUCCESS == dispatch( &prm, acc ) );
+  cr_assert( SUCCESSFULLY_UPDATED_AGGREGATE == dispatch( &prm, acc ) );
   cr_assert( sptr->comp_[0].latest_.price_ == 42L );
   cr_assert( sptr->comp_[0].latest_.conf_ == 2L );
   cr_assert( sptr->comp_[0].latest_.pub_slot_ == 1 );
@@ -426,7 +426,7 @@ Test( oracle, upd_price ) {
   idata.price_ = 81;
   idata.pub_slot_ = 2;
   cvar.slot_ = 3;
-  cr_assert( SUCCESS == dispatch( &prm, acc ) );
+  cr_assert( SUCCESSFULLY_UPDATED_AGGREGATE == dispatch( &prm, acc ) );
   cr_assert( sptr->comp_[0].latest_.price_ == 81L );
   cr_assert( sptr->comp_[0].agg_.price_ == 42L );
   cr_assert( sptr->comp_[0].latest_.pub_slot_ == 2 );
@@ -436,7 +436,7 @@ Test( oracle, upd_price ) {
   // next price doesnt change but slot does
   cvar.slot_ = 4;
   idata.pub_slot_ = 3;
-  cr_assert( SUCCESS == dispatch( &prm, acc ) );
+  cr_assert( SUCCESSFULLY_UPDATED_AGGREGATE == dispatch( &prm, acc ) );
   cr_assert( sptr->comp_[0].latest_.price_ == 81L );
   cr_assert( sptr->comp_[0].agg_.price_ == 81L );
   cr_assert( sptr->comp_[0].latest_.pub_slot_ == 3 );
@@ -446,7 +446,7 @@ Test( oracle, upd_price ) {
   // next price doesnt change and neither does aggregate but slot does
   idata.pub_slot_ = 4;
   cvar.slot_ = 5;
-  cr_assert( SUCCESS == dispatch( &prm, acc ) );
+  cr_assert( SUCCESSFULLY_UPDATED_AGGREGATE == dispatch( &prm, acc ) );
   cr_assert( sptr->comp_[0].latest_.price_ == 81L );
   cr_assert( sptr->comp_[0].agg_.price_ == 81L );
   cr_assert( sptr->comp_[0].latest_.pub_slot_ == 4 );
@@ -466,7 +466,7 @@ Test( oracle, upd_price ) {
   cvar.slot_ = 6;
   idata.price_ = 50;
   idata.conf_ = 6;
-  cr_assert( SUCCESS == dispatch( &prm, acc ) );
+  cr_assert( SUCCESSFULLY_UPDATED_AGGREGATE == dispatch( &prm, acc ) );
   cr_assert( sptr->comp_[0].latest_.price_ == 50L );
   cr_assert( sptr->comp_[0].latest_.conf_ == 6L );
   cr_assert( sptr->comp_[0].latest_.status_ == PC_STATUS_UNKNOWN );
@@ -478,7 +478,7 @@ Test( oracle, upd_price ) {
   // Crank one more time and aggregate should be unknown
   idata.pub_slot_ = 6;
   cvar.slot_ = 7;
-  cr_assert( SUCCESS == dispatch( &prm, acc ) );
+  cr_assert( SUCCESSFULLY_UPDATED_AGGREGATE == dispatch( &prm, acc ) );
   cr_assert( sptr->agg_.status_ == PC_STATUS_UNKNOWN );
 }
 
@@ -559,7 +559,7 @@ Test( oracle, upd_price_no_fail_on_error ) {
   pc_pub_key_assign( &sptr->comp_[0].pub_, (pc_pub_key_t*)&pkey );
 
   // The update should now succeed, and have an effect.
-  cr_assert( SUCCESS == dispatch( &prm, acc ) );
+  cr_assert( SUCCESSFULLY_UPDATED_AGGREGATE == dispatch( &prm, acc ) );
   cr_assert( sptr->comp_[0].latest_.price_ == 42L );
   cr_assert( sptr->comp_[0].latest_.conf_ == 9L );
   cr_assert( sptr->comp_[0].latest_.pub_slot_ == 1 );

program/rust/src/bindings.h

@@ -0,0 +1,14 @@
+#pragma once
+
+#define static_assert _Static_assert
+
+typedef signed char int8_t;
+typedef unsigned char uint8_t;
+typedef signed short int16_t;
+typedef unsigned short uint16_t;
+typedef signed int int32_t;
+typedef unsigned int uint32_t;
+typedef signed long int int64_t;
+typedef unsigned long int uint64_t;
+
+#include "../../c/src/oracle/oracle.h"

program/rust/src/lib.rs

@@ -1,11 +1,19 @@
+//this is auto generated by build_bpf.sh
+mod c_oracle_header;
+
 #[link(name = "cpyth")]
 extern "C" {
     fn c_entrypoint(input: *mut u8) -> u64;
 }
 
 #[no_mangle]
 pub extern "C" fn entrypoint(input: *mut u8) -> u64 {
-    unsafe{
-        return c_entrypoint(input);
+    let c_ret_val = unsafe{c_entrypoint(input)};
+    if c_ret_val == c_oracle_header::SUCCESSFULLY_UPDATED_AGGREGATE{
+        return 0;
+    } else {
+        return c_ret_val;
     }
+
+
 }

scripts/build-bpf.sh

@@ -40,6 +40,8 @@ rm ./target/*-keypair.json
 
 #build Rust and link it with C
 cd "${RUST_DIR}"
+cargo install bindgen
+bindgen ./src/bindings.h -o ./src/c_oracle_header.rs
 cargo clean
 cargo build-bpf
 sha256sum ./target/**/*.so