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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
use apache_avro::{schema::AvroSchema, types::Value};
const RESOURCES_FOLDER: &str = "../../share/test/data/messageV1";
struct InteropMessage;
impl AvroSchema for InteropMessage {
fn get_schema() -> apache_avro::Schema {
let schema = std::fs::read_to_string(format!("{}/test_schema.avsc", RESOURCES_FOLDER))
.expect("File should exist with schema inside");
apache_avro::Schema::parse_str(schema.as_str())
.expect("File should exist with schema inside")
}
}
impl From<InteropMessage> for Value {
fn from(_: InteropMessage) -> Value {
Value::Record(vec![
("id".into(), 42i64.into()),
("name".into(), "Bill".into()),
(
"tags".into(),
Value::Array(
vec!["dog_lover", "cat_hater"]
.into_iter()
.map(|s| s.into())
.collect(),
),
),
])
}
}
fn main() {
let single_object = std::fs::read(format!("{}/test_message.bin", RESOURCES_FOLDER))
.expect("File with single object not found or error occurred while reading it.");
test_write(&single_object);
test_read(single_object);
}
fn test_write(expected: &[u8]) {
let mut encoded: Vec<u8> = Vec::new();
apache_avro::SpecificSingleObjectWriter::<InteropMessage>::with_capacity(1024)
.expect("Resolving failed")
.write_value(InteropMessage, &mut encoded)
.expect("Encoding failed");
assert_eq!(expected, &encoded)
}
fn test_read(encoded: Vec<u8>) {
let mut encoded = &encoded[..];
let read_message = apache_avro::GenericSingleObjectReader::new(InteropMessage::get_schema())
.expect("Resolving failed")
.read_value(&mut encoded)
.expect("Decoding failed");
let expected_value: Value = InteropMessage.into();
assert_eq!(expected_value, read_message)
}
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