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| 1 | +## Improving Data on Transactions and Spans |
| 2 | +You can add Data Attributes to both Spans and Transactions. This data is visible in the trace explorer in Sentry. |
| 3 | +The data must be of type `sentry_value_t`, which can store: |
| 4 | +* 32-bit signed integers, |
| 5 | +* double-precision floating-points, |
| 6 | +* null-terminated strings, as well as |
| 7 | +* lists and string-keyed maps containing `sentry_value_t` entries |
| 8 | + |
| 9 | +### Adding Data Attributes to Transactions |
| 10 | + |
| 11 | +You can add data attributes to your transactions using the following API: |
| 12 | + |
| 13 | +```c |
| 14 | +sentry_transaction_context_t *tx_ctx = |
| 15 | + sentry_transaction_context_new("processOrderBatch()", "task"); |
| 16 | +sentry_transaction_t *tx = |
| 17 | + sentry_transaction_start(tx_ctx, sentry_value_new_null()); |
| 18 | + |
| 19 | +sentry_transaction_set_data(tx, "my-data-attribute-1", |
| 20 | + sentry_value_new_string("value1")); |
| 21 | +sentry_transaction_set_data(tx, "my-data-attribute-2", |
| 22 | + sentry_value_new_int32(42)); |
| 23 | +sentry_transaction_set_data(tx, "my-data-attribute-3", |
| 24 | + sentry_value_new_double(3.14)); |
| 25 | +sentry_transaction_set_data(tx, "my-data-attribute-4", |
| 26 | + sentry_value_new_bool(true)); |
| 27 | + |
| 28 | +sentry_value_t value_list = sentry_value_new_list(); |
| 29 | +sentry_value_append(value_list, sentry_value_new_string("value1")); |
| 30 | +sentry_value_append(value_list, sentry_value_new_int32(42)); |
| 31 | +sentry_value_append(value_list, sentry_value_new_double(3.14)); |
| 32 | +sentry_value_append(value_list, sentry_value_new_bool(true)); |
| 33 | + |
| 34 | +sentry_transaction_set_data(tx, "my-data-attribute-5", value_list); |
| 35 | + |
| 36 | +sentry_value_t value_object = sentry_value_new_object(); |
| 37 | +sentry_value_set_by_key(value_object, "key_1", sentry_value_new_string("value1")); |
| 38 | +sentry_value_set_by_key(value_object, "key_2", sentry_value_new_int32(42)); |
| 39 | +sentry_value_set_by_key(value_object, "key_3", sentry_value_new_double(3.14)); |
| 40 | +sentry_value_set_by_key(value_object, "key_4", sentry_value_new_bool(true)); |
| 41 | + |
| 42 | +sentry_transaction_set_data(tx, "my-data-attribute-6", value_object); |
| 43 | +``` |
| 44 | +
|
| 45 | +### Adding Data Attributes to Spans |
| 46 | +
|
| 47 | +You can add data attributes to your spans using the following API: |
| 48 | +
|
| 49 | +```c |
| 50 | +sentry_transaction_context_t *tx_ctx = |
| 51 | + sentry_transaction_context_new("processOrderBatch()", "task"); |
| 52 | +sentry_transaction_t *tx = |
| 53 | + sentry_transaction_start(tx_ctx, sentry_value_new_null()); |
| 54 | +sentry_span_t *span = |
| 55 | + sentry_transaction_start_child(tx, "task", "operation"); |
| 56 | +
|
| 57 | +sentry_span_set_data(span, "my-data-attribute-1", |
| 58 | + sentry_value_new_string("value1")); |
| 59 | +sentry_span_set_data(span, "my-data-attribute-2", |
| 60 | + sentry_value_new_int32(42)); |
| 61 | +sentry_span_set_data(span, "my-data-attribute-3", |
| 62 | + sentry_value_new_double(3.14)); |
| 63 | +sentry_span_set_data(span, "my-data-attribute-4", |
| 64 | + sentry_value_new_bool(true)); |
| 65 | +
|
| 66 | +sentry_value_t value_list = sentry_value_new_list(); |
| 67 | +sentry_value_append(value_list, sentry_value_new_string("value1")); |
| 68 | +sentry_value_append(value_list, sentry_value_new_int32(42)); |
| 69 | +sentry_value_append(value_list, sentry_value_new_double(3.14)); |
| 70 | +sentry_value_append(value_list, sentry_value_new_bool(true)); |
| 71 | +
|
| 72 | +sentry_span_set_data(span, "my-data-attribute-5", value_list); |
| 73 | +
|
| 74 | +sentry_value_t value_object = sentry_value_new_object(); |
| 75 | +sentry_value_set_by_key(value_object, "key_1", sentry_value_new_string("value1")); |
| 76 | +sentry_value_set_by_key(value_object, "key_2", sentry_value_new_int32(42)); |
| 77 | +sentry_value_set_by_key(value_object, "key_3", sentry_value_new_double(3.14)); |
| 78 | +sentry_value_set_by_key(value_object, "key_4", sentry_value_new_bool(true)); |
| 79 | +
|
| 80 | +sentry_span_set_data(span, "my-data-attribute-6", value_object); |
| 81 | +``` |
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