Class: Couchbase::CoreScanResult

Inherits:
Object
  • Object
show all
Defined in:
ext/rcb_range_scan.cxx

Instance Method Summary collapse

Instance Method Details

#cancel ⇒ Object 



96
97
98
99
100
101
102
103
 
# File 'ext/rcb_range_scan.cxx', line 96

VALUE
cb_CoreScanResult_cancel(VALUE self)
{
  cb_core_scan_result_data* data = nullptr;
  TypedData_Get_Struct(self, cb_core_scan_result_data, &cb_core_scan_result_type, data);
  data->scan_result->cancel();
  return Qnil;
}

#cancelled? ⇒ Boolean

Returns:

  • (Boolean) 


84
85
86
87
88
89
90
91
92
93
94
 
# File 'ext/rcb_range_scan.cxx', line 84

VALUE
cb_CoreScanResult_is_cancelled(VALUE self)
{
  cb_core_scan_result_data* data = nullptr;
  TypedData_Get_Struct(self, cb_core_scan_result_data, &cb_core_scan_result_type, data);
  auto resp = data->scan_result->is_cancelled();
  if (resp) {
    return Qtrue;
  }
  return Qfalse;
}

#next_item ⇒ Object 



105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
 
# File 'ext/rcb_range_scan.cxx', line 105

VALUE
cb_CoreScanResult_next_item(VALUE self)
{
  try {
    cb_core_scan_result_data* data = nullptr;
    TypedData_Get_Struct(self, cb_core_scan_result_data, &cb_core_scan_result_type, data);
    std::promise<tl::expected<couchbase::core::range_scan_item, std::error_code>> promise;
    auto f = promise.get_future();
    data->scan_result->next([promise = std::move(promise)](couchbase::core::range_scan_item item,
                                                           std::error_code ec) mutable {
      if (ec) {
        return promise.set_value(tl::unexpected(ec));
      }
      return promise.set_value(item);
    });
    auto resp = cb_wait_for_future(f);
    if (!resp.has_value()) {
      // If the error code is range_scan_completed return nil without raising an exception (nil
      // signifies that there are no more items)
      if (resp.error() != couchbase::errc::key_value::range_scan_completed) {
        cb_throw_error_code(resp.error(), "unable to fetch next scan item");
      }
      // Release ownership of scan_result unique pointer
      return Qnil;
    }
    auto item = resp.value();
    VALUE res = rb_hash_new();
    rb_hash_aset(res, rb_id2sym(rb_intern("id")), cb_str_new(item.key));
    if (item.body.has_value()) {
      auto body = item.body.value();
      rb_hash_aset(res, rb_id2sym(rb_intern("id")), cb_str_new(item.key));
      rb_hash_aset(res, rb_id2sym(rb_intern("encoded")), cb_str_new(body.value));
      rb_hash_aset(res, rb_id2sym(rb_intern("cas")), cb_cas_to_num(body.cas));
      rb_hash_aset(res, rb_id2sym(rb_intern("flags")), UINT2NUM(body.flags));
      rb_hash_aset(res, rb_id2sym(rb_intern("expiry")), UINT2NUM(body.expiry));
      rb_hash_aset(res, rb_id2sym(rb_intern("id_only")), Qfalse);
    } else {
      rb_hash_aset(res, rb_id2sym(rb_intern("id_only")), Qtrue);
    }
    return res;
  } catch (const std::system_error& se) {
    rb_exc_raise(cb_map_error_code(
      se.code(), fmt::format("failed to perform {}: {}", __func__, se.what()), false));
  } catch (const ruby_exception& e) {
    rb_exc_raise(e.exception_object());
  }
  return Qnil;
}