static int test_int64(void) { int i; avro_schema_t writer_schema = avro_schema_long(); avro_schema_t float_schema = avro_schema_float(); avro_schema_t double_schema = avro_schema_double(); for (i = 0; i < 100; i++) { int64_t value = rand_int64(); avro_datum_t datum = avro_int64(value); avro_datum_t float_datum = avro_float(value); avro_datum_t double_datum = avro_double(value); write_read_check(writer_schema, datum, NULL, NULL, "long"); write_read_check(writer_schema, datum, float_schema, float_datum, "long->float"); write_read_check(writer_schema, datum, double_schema, double_datum, "long->double"); avro_datum_decref(datum); avro_datum_decref(float_datum); avro_datum_decref(double_datum); } avro_datum_t datum = avro_int64(10000); test_json(datum, "10000"); avro_datum_decref(datum); avro_schema_decref(writer_schema); avro_schema_decref(float_schema); avro_schema_decref(double_schema); return 0; }
static int test_map(void) { avro_schema_t schema = avro_schema_map(avro_schema_long()); avro_datum_t datum = avro_map(schema); int64_t i = 0; char *nums[] = { "zero", "one", "two", "three", "four", "five", "six", NULL }; while (nums[i]) { avro_datum_t i_datum = avro_int64(i); avro_map_set(datum, nums[i], i_datum); avro_datum_decref(i_datum); i++; } if (avro_array_size(datum) != 7) { fprintf(stderr, "Unexpected map size\n"); exit(EXIT_FAILURE); } avro_datum_t value; const char *key; avro_map_get_key(datum, 2, &key); avro_map_get(datum, key, &value); int64_t val; avro_int64_get(value, &val); if (val != 2) { fprintf(stderr, "Unexpected map value 2\n"); exit(EXIT_FAILURE); } int index; if (avro_map_get_index(datum, "two", &index)) { fprintf(stderr, "Can't get index for key \"two\": %s\n", avro_strerror()); exit(EXIT_FAILURE); } if (index != 2) { fprintf(stderr, "Unexpected index for key \"two\"\n"); exit(EXIT_FAILURE); } if (!avro_map_get_index(datum, "foobar", &index)) { fprintf(stderr, "Unexpected index for key \"foobar\"\n"); exit(EXIT_FAILURE); } write_read_check(schema, datum, NULL, NULL, "map"); test_json(datum, "{\"zero\": 0, \"one\": 1, \"two\": 2, \"three\": 3, " "\"four\": 4, \"five\": 5, \"six\": 6}"); avro_datum_decref(datum); avro_schema_decref(schema); return 0; }
static int test_int64(void) { int i; avro_schema_t writer_schema = avro_schema_long(); for (i = 0; i < 100; i++) { avro_datum_t datum = avro_int64(rand_int64()); write_read_check(writer_schema, NULL, datum, "long"); avro_datum_decref(datum); } avro_schema_decref(writer_schema); return 0; }
static int test_map(void) { avro_schema_t schema = avro_schema_map(avro_schema_long()); avro_datum_t datum = avro_map(); int64_t i = 0; char *nums[] = { "zero", "one", "two", "three", "four", "five", "six", NULL }; while (nums[i]) { avro_datum_t i_datum = avro_int64(i); avro_map_set(datum, nums[i], i_datum); avro_datum_decref(i_datum); i++; } write_read_check(schema, NULL, datum, "map"); avro_datum_decref(datum); avro_schema_decref(schema); return 0; }
/*添加学生记录*/ void add_student(avro_file_writer_t db, const char *name, const char *dept, const char *phone, int32_t age) { avro_datum_t student = avro_record("Student", NULL); avro_datum_t sid_datum = avro_int64(++id); avro_datum_t name_datum = avro_string(name); avro_datum_t dept_datum = avro_string(dept); avro_datum_t age_datum = avro_int32(age); avro_datum_t phone_datum = avro_string(phone); /*创建学生记录*/ if (avro_record_set(student, "SID", sid_datum) || avro_record_set(student, "Name", name_datum) || avro_record_set(student, "Dept", dept_datum) || avro_record_set(student, "Age", age_datum) || avro_record_set(student, "Phone", phone_datum)) { fprintf(stderr, "Failed to create student datum structure"); exit(EXIT_FAILURE); } /*将记录添加到数据库文件中*/ if (avro_file_writer_append(db, student)) { fprintf(stderr, "Failed to add student datum to database"); exit(EXIT_FAILURE); } /*解除引用,释放内存空间*/ avro_datum_decref(sid_datum); avro_datum_decref(name_datum); avro_datum_decref(dept_datum); avro_datum_decref(age_datum); avro_datum_decref(phone_datum); avro_datum_decref(student); fprintf(stdout, "Successfully added %s\n", name); }
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; }