static int test_union(void) { avro_schema_t schema = avro_schema_union(); avro_datum_t union_datum; avro_datum_t datum; avro_datum_t union_datum1; avro_datum_t datum1; avro_schema_union_append(schema, avro_schema_string()); avro_schema_union_append(schema, avro_schema_int()); avro_schema_union_append(schema, avro_schema_null()); datum = avro_givestring("Follow your bliss.", NULL); union_datum = avro_union(schema, 0, datum); if (avro_union_discriminant(union_datum) != 0) { fprintf(stderr, "Unexpected union discriminant\n"); exit(EXIT_FAILURE); } if (avro_union_current_branch(union_datum) != datum) { fprintf(stderr, "Unexpected union branch datum\n"); exit(EXIT_FAILURE); } union_datum1 = avro_datum_from_schema(schema); avro_union_set_discriminant(union_datum1, 0, &datum1); avro_givestring_set(datum1, "Follow your bliss.", NULL); if (!avro_datum_equal(datum, datum1)) { fprintf(stderr, "Union values should be equal\n"); exit(EXIT_FAILURE); } write_read_check(schema, union_datum, NULL, NULL, "union"); test_json(union_datum, "{\"string\": \"Follow your bliss.\"}"); avro_datum_decref(datum); avro_union_set_discriminant(union_datum, 2, &datum); test_json(union_datum, "null"); avro_datum_decref(union_datum); avro_datum_decref(datum); avro_datum_decref(union_datum1); avro_schema_decref(schema); return 0; }
static int test_union(void) { avro_schema_t schema = avro_schema_union(); avro_datum_t union_datum; avro_datum_t datum; avro_schema_union_append(schema, avro_schema_string()); avro_schema_union_append(schema, avro_schema_int()); avro_schema_union_append(schema, avro_schema_null()); datum = avro_wrapstring("Follow your bliss."); union_datum = avro_union(0, datum); write_read_check(schema, NULL, union_datum, "union"); avro_datum_decref(union_datum); avro_datum_decref(datum); avro_schema_decref(schema); return 0; }
avro_datum_t avro_datum_from_schema(const avro_schema_t schema) { check_param(NULL, is_avro_schema(schema), "schema"); switch (avro_typeof(schema)) { case AVRO_STRING: return avro_givestring("", NULL); case AVRO_BYTES: return avro_givebytes("", 0, NULL); case AVRO_INT32: return avro_int32(0); case AVRO_INT64: return avro_int64(0); case AVRO_FLOAT: return avro_float(0); case AVRO_DOUBLE: return avro_double(0); case AVRO_BOOLEAN: return avro_boolean(0); case AVRO_NULL: return avro_null(); case AVRO_RECORD: { const struct avro_record_schema_t *record_schema = avro_schema_to_record(schema); avro_datum_t rec = avro_record(schema); int i; for (i = 0; i < record_schema->fields->num_entries; i++) { union { st_data_t data; struct avro_record_field_t *field; } val; st_lookup(record_schema->fields, i, &val.data); avro_datum_t field = avro_datum_from_schema(val.field->type); avro_record_set(rec, val.field->name, field); avro_datum_decref(field); } return rec; } case AVRO_ENUM: return avro_enum(schema, 0); case AVRO_FIXED: { const struct avro_fixed_schema_t *fixed_schema = avro_schema_to_fixed(schema); return avro_givefixed(schema, NULL, fixed_schema->size, NULL); } case AVRO_MAP: return avro_map(schema); case AVRO_ARRAY: return avro_array(schema); case AVRO_UNION: return avro_union(schema, -1, NULL); case AVRO_LINK: { const struct avro_link_schema_t *link_schema = avro_schema_to_link(schema); return avro_datum_from_schema(link_schema->to); } default: avro_set_error("Unknown schema type"); return NULL; } }
int main(int argc, char *argv[]) { int rval; avro_file_writer_t file_writer; avro_file_reader_t file_reader; char outpath[128]; FILE *fp; char jsontext[16 * 1024]; avro_schema_t schema; avro_schema_error_t schema_error; avro_datum_t interop; avro_datum_t array_datum; avro_datum_t node_datum; avro_datum_t union_datum; avro_datum_t out_datum; enum Kind { KIND_A, KIND_B, KIND_C }; if (argc != 3) { exit(EXIT_FAILURE); } snprintf(outpath, sizeof(outpath), "%s/c.avro", argv[2]); fprintf(stderr, "Writing to %s\n", outpath); fp = fopen(argv[1], "r"); rval = fread(jsontext, 1, sizeof(jsontext) - 1, fp); jsontext[rval] = '\0'; check(rval, avro_schema_from_json(jsontext, rval, &schema, &schema_error)); check(rval, avro_file_writer_create(outpath, schema, &file_writer)); /* TODO: create a method for generating random data from schema */ interop = avro_record("Interop", "org.apache.avro"); avro_record_set(interop, "intField", avro_int32(42)); avro_record_set(interop, "longField", avro_int64(4242)); avro_record_set(interop, "stringField", avro_wrapstring("Follow your bliss.")); avro_record_set(interop, "boolField", avro_boolean(1)); avro_record_set(interop, "floatField", avro_float(3.14159265)); avro_record_set(interop, "doubleField", avro_double(2.71828183)); avro_record_set(interop, "bytesField", avro_bytes("abcd", 4)); avro_record_set(interop, "nullField", avro_null()); array_datum = avro_array(); avro_array_append_datum(array_datum, avro_double(1.0)); avro_array_append_datum(array_datum, avro_double(2.0)); avro_array_append_datum(array_datum, avro_double(3.0)); avro_record_set(interop, "arrayField", array_datum); avro_record_set(interop, "mapField", avro_map()); union_datum = avro_union(1, avro_double(1.61803399)); avro_record_set(interop, "unionField", union_datum); avro_record_set(interop, "enumField", avro_enum("Kind", KIND_A)); avro_record_set(interop, "fixedField", avro_fixed("MD5", "1234567890123456", 16)); node_datum = avro_record("Node", NULL); avro_record_set(node_datum, "label", avro_wrapstring("If you label me, you negate me.")); avro_record_set(node_datum, "children", avro_array()); avro_record_set(interop, "recordField", node_datum); rval = avro_file_writer_append(file_writer, interop); if (rval) { fprintf(stderr, "Unable to append data to interop file!\n"); exit(EXIT_FAILURE); } else { fprintf(stderr, "Successfully appended datum to file\n"); } check(rval, avro_file_writer_close(file_writer)); fprintf(stderr, "Closed writer.\n"); check(rval, avro_file_reader(outpath, &file_reader)); fprintf(stderr, "Re-reading datum to verify\n"); check(rval, avro_file_reader_read(file_reader, NULL, &out_datum)); fprintf(stderr, "Verifying datum..."); if (!avro_datum_equal(interop, out_datum)) { fprintf(stderr, "fail!\n"); exit(EXIT_FAILURE); } fprintf(stderr, "ok\n"); check(rval, avro_file_reader_close(file_reader)); fprintf(stderr, "Closed reader.\n"); return 0; }