mirror of
https://github.com/fluencelabs/examples
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Reorg (#10)
* init reorg * updated readme * fix CI * remove outdated ipfs-node example * add Readme * update readme, add config file Co-authored-by: folex <0xdxdy@gmail.com>
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151
marine-examples/sqlite/src/main.rs
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151
marine-examples/sqlite/src/main.rs
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/*
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* Copyright 2020 Fluence Labs Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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use marine_rs_sdk::marine;
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use marine_rs_sdk::module_manifest;
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use marine_sqlite_connector;
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use marine_sqlite_connector::{State, Value};
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module_manifest!();
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pub fn main() {}
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#[marine]
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pub fn test1(age: i64) {
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let connection = marine_sqlite_connector::open(":memory:").unwrap();
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connection
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.execute(
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"
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CREATE TABLE users (name TEXT, age INTEGER);
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INSERT INTO users VALUES ('Alice', 42);
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INSERT INTO users VALUES ('Bob', 69);
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",
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)
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.unwrap();
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let mut statement = connection
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.prepare("SELECT * FROM users WHERE age > ?")
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.unwrap();
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statement.bind(1, age).unwrap();
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while let State::Row = statement.next().unwrap() {
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println!("name = {}", statement.read::<String>(0).unwrap());
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println!("age = {}", statement.read::<i64>(1).unwrap());
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}
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}
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#[marine]
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pub fn test2(age: i64) {
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use marine_sqlite_connector::Value;
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let connection = marine_sqlite_connector::open(":memory:").unwrap();
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connection
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.execute(
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"
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CREATE TABLE users (name TEXT, age INTEGER);
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INSERT INTO users VALUES ('Alice', 42);
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INSERT INTO users VALUES ('Bob', 69);
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",
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)
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.unwrap();
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let mut cursor = connection
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.prepare("SELECT * FROM users WHERE age > ?")
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.unwrap()
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.cursor();
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cursor.bind(&[Value::Integer(age)]).unwrap();
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while let Some(row) = cursor.next().unwrap() {
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println!(
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"name = {}",
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row[0].as_string().expect("error on row[0] parsing")
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);
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println!(
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"age = {}",
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row[1].as_integer().expect("error on row[1] parsing")
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);
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}
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}
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#[marine]
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pub fn test3() {
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let db_path = "/tmp/users.sqlite";
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let connection = marine_sqlite_connector::open(db_path).expect("db should be opened");
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connection
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.execute(
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"
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CREATE TABLE IF NOT EXISTS users (name TEXT, age INTEGER);
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INSERT INTO users VALUES ('Alice', 42);
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INSERT INTO users VALUES ('Bob', 69);
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",
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)
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.expect("table should be created successfully");
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let connection = marine_sqlite_connector::open(db_path).expect("db should be opened");
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let cursor = connection.prepare("SELECT * FROM users").unwrap().cursor();
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println!("table size is: {:?}", cursor.count());
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}
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#[marine]
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pub fn test_last_rowid() -> i64 {
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let db_path = "/tmp/users.sqlite";
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let connection = marine_sqlite_connector::open(db_path).expect("db should be opened");
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connection.execute(
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"CREATE TABLE IF NOT EXISTS users (id integer not null primary key AUTOINCREMENT, name TEXT, age INTEGER);"
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).expect("table should be created successfully");
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connection
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.execute(
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"
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INSERT INTO users (name, age) VALUES ('Alice', 42);
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INSERT INTO users (name, age) VALUES ('Bob', 69);
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",
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)
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.expect("insert");
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let stmt = connection
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.prepare("SELECT last_insert_rowid();")
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.expect("select");
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let mut cursor = stmt.cursor();
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match cursor.next() {
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Ok(Some(&[Value::Integer(id)])) => return id,
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other => panic!(
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"Expected integer to be returned from last_insert_rowid, got {:?}",
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other
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),
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}
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}
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#[cfg(test)]
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mod tests {
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use marine_rs_sdk_test::marine_test;
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use marine_rs_sdk_test::CallParameters;
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use marine_rs_sdk_test::SecurityTetraplet;
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#[marine_test(config_path = "../Config.toml", modules_dir = "../artifacts")]
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fn test() {
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assert!(sqlite_test.test_last_rowid() > 0);
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}
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}
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