ci: enable ConfigTests

.github/workflows/build.yml

@@ -40,6 +40,7 @@ jobs:
 #        Ignored tests are added in the end, after the "-" sign.
         Tests: "ClusterTests.*\
 :BasicsTests.*\
+:ConfigTests.*\
 :PreparedTests.*\
 :CassandraTypes/CassandraTypesTests/*.Integration_Cassandra_*\
 :BatchSingleNodeClusterTests*:BatchCounterSingleNodeClusterTests*:BatchCounterThreeNodeClusterTests*\

.github/workflows/cassandra.yml

@@ -42,6 +42,7 @@ jobs:
           #        Ignored tests are added in the end, after the "-" sign.
           Tests: "ClusterTests.*\
 :BasicsTests.*\
+:ConfigTests.*\
 :PreparedTests.*\
 :CassandraTypes/CassandraTypesTests/*.Integration_Cassandra_*\
 :ErrorTests.*\

scylla-rust-wrapper/src/cluster.rs

@@ -16,7 +16,7 @@ use scylla::load_balancing::{DefaultPolicyBuilder, LoadBalancingPolicy};
 use scylla::retry_policy::RetryPolicy;
 use scylla::speculative_execution::SimpleSpeculativeExecutionPolicy;
 use scylla::statement::{Consistency, SerialConsistency};
-use scylla::SessionBuilder;
+use scylla::{SessionBuilder, SessionConfig};
 use std::collections::HashMap;
 use std::convert::TryInto;
 use std::future::Future;
@@ -91,6 +91,21 @@ impl CassCluster {
     pub(crate) fn execution_profile_map(&self) -> &HashMap<ExecProfileName, CassExecProfile> {
         &self.execution_profile_map
     }
+
+    #[inline]
+    pub(crate) fn get_session_config(&self) -> &SessionConfig {
+        &self.session_builder.config
+    }
+
+    #[inline]
+    pub(crate) fn get_port(&self) -> u16 {
+        self.port
+    }
+
+    #[inline]
+    pub(crate) fn get_contact_points(&self) -> &[String] {
+        &self.contact_points
+    }
 }
 
 pub struct CassCustomPayload;
@@ -174,9 +189,10 @@ unsafe fn cluster_set_contact_points(
     let mut contact_points = ptr_to_cstr_n(contact_points_raw, contact_points_length)
         .ok_or(CassError::CASS_ERROR_LIB_BAD_PARAMS)?
         .split(',')
+        .filter(|s| !s.is_empty()) // Extra commas should be ignored.
         .peekable();
 
-    if contact_points.peek().is_none() {
+    if contact_points.peek().is_none() || contact_points.peek().unwrap().is_empty() {
         // If cass_cluster_set_contact_points() is called with empty
         // set of contact points, the contact points should be cleared.
         cluster.contact_points.clear();

scylla-rust-wrapper/src/integration_testing.rs

@@ -0,0 +1,52 @@
+use std::ffi::{c_char, CString};
+
+use crate::{
+    argconv::ptr_to_ref,
+    cluster::CassCluster,
+    types::{cass_int32_t, cass_uint16_t, size_t},
+};
+
+#[no_mangle]
+pub unsafe extern "C" fn testing_cluster_get_connect_timeout(
+    cluster_raw: *const CassCluster,
+) -> cass_uint16_t {
+    let cluster = ptr_to_ref(cluster_raw);
+
+    cluster.get_session_config().connect_timeout.as_millis() as cass_uint16_t
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn testing_cluster_get_port(cluster_raw: *const CassCluster) -> cass_int32_t {
+    let cluster = ptr_to_ref(cluster_raw);
+
+    cluster.get_port() as cass_int32_t
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn testing_cluster_get_contact_points(
+    cluster_raw: *const CassCluster,
+    contact_points: *mut *mut c_char,
+    contact_points_length: *mut size_t,
+) {
+    let cluster = ptr_to_ref(cluster_raw);
+
+    let contact_points_string = cluster.get_contact_points().join(",");
+    let length = contact_points_string.len();
+
+    match CString::new(contact_points_string) {
+        Ok(cstring) => {
+            *contact_points = cstring.into_raw();
+            *contact_points_length = length as size_t;
+        }
+        Err(_) => {
+            // The contact points string contained a nul byte in the middle.
+            *contact_points = std::ptr::null_mut();
+            *contact_points_length = 0;
+        }
+    }
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn testing_free_contact_points(contact_points: *mut c_char) {
+    let _ = CString::from_raw(contact_points);
+}

scylla-rust-wrapper/src/lib.rs

@@ -18,6 +18,7 @@ pub mod exec_profile;
 mod external;
 pub mod future;
 pub mod inet;
+pub mod integration_testing;
 mod logging;
 pub mod metadata;
 pub mod prepared;

src/testing.cpp

@@ -21,6 +21,11 @@
 #include "get_time.hpp"
 #include "logger.hpp"
 #include "murmur3.hpp"
+#include <iostream>
+
+extern "C" {
+  #include "testing_rust_impls.h"
+}
 
 namespace datastax { namespace internal { namespace testing {
 
@@ -35,15 +40,30 @@ StringVec get_attempted_hosts_from_future(CassFuture* future) {
 }
 
 unsigned get_connect_timeout_from_cluster(CassCluster* cluster) {
-  throw std::runtime_error("Unimplemented 'get_connect_timeout_from_cluster'!");
+  return testing_cluster_get_connect_timeout(cluster);
 }
 
 int get_port_from_cluster(CassCluster* cluster) {
-  throw std::runtime_error("Unimplemented 'get_port_from_cluster'!");
+  return testing_cluster_get_port(cluster);
 }
 
 String get_contact_points_from_cluster(CassCluster* cluster) {
-  throw std::runtime_error("Unimplemented 'get_contact_points_from_cluster'!");
+  char* contact_points;
+  size_t contact_points_length;
+  testing_cluster_get_contact_points(cluster, &contact_points, &contact_points_length);
+
+  if (contact_points == nullptr) {
+    throw std::runtime_error("CassCluster returned a null contact points string.\
+                              This means that one of the contact points contained a nul byte in it.");
+  }
+
+  std::string contact_points_str(contact_points, contact_points_length);
+  OStringStream ss;
+  ss << contact_points_str;
+
+  testing_free_contact_points(contact_points);
+
+  return ss.str();
 }
 
 int64_t create_murmur3_hash_from_string(const String& value) {

src/testing_rust_impls.h

@@ -0,0 +1,25 @@
+#ifndef CPP_RUST_DRIVER_TESTING_RUST_IMPLS_HPP
+#define CPP_RUST_DRIVER_TESTING_RUST_IMPLS_HPP
+
+#include "cassandra.h"
+
+extern "C" {
+    // Retrieves a connect timeout from cluster config.
+    CASS_EXPORT cass_uint16_t testing_cluster_get_connect_timeout(CassCluster *cluster);
+
+    // Retrieves a CQL connection port from cluster config.
+    CASS_EXPORT cass_int32_t testing_cluster_get_port(CassCluster* cluster);
+
+    // Retrieves a contact points string. The contact points are delimited with ','.
+    //
+    // This function can fail, if any of the contact points contains a nul byte.
+    // Then, the resulting pointer is set to null.
+    //
+    // On success, this function allocates a contact points string, which needs to be then
+    // freed with `testing_free_contact_points`.
+    CASS_EXPORT void testing_cluster_get_contact_points(CassCluster *cluster, char **contact_points, size_t *contact_points_length);
+
+    CASS_EXPORT void testing_free_contact_points(char *contact_points);
+}
+
+#endif