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Classes

Preflight class

bring cloud;
bring util;

class Foo {
field1: str; // <-- readonly
var field2: num; // <-- reassignable
inflight field3: Array<str>;

new() {
this.field1 = "hello";
this.field2 = 123;
}

setField2(value: num): void {
this.field2 = value;
}

inflight new() {
this.field3 = ["value created on inflight init"];
log("at inflight init");
}

pub inflight doStuff() {
// all code is async and runs on the cloud
log("field3[0]='{this.field3.at(0)}'");
util.sleep(1s);
log("done");
}
}

let f = new Foo();
log("field1={f.field1}");
log("field2={f.field2}");

new cloud.Function(inflight () => {
f.doStuff();
});

Inflight interface

bring cloud;

interface IProfile {
inflight name(): str;
}

inflight class WingPerson impl IProfile {
pub inflight name(): str {
return "Fairy Wing";
}
}

let logName = inflight(profile: IProfile): void => {
log(profile.name());
};

new cloud.Function(inflight () => {
logName(new WingPerson());
});

Preflight interface

/**
* Preflight Interface
**/
interface IKVStore extends std.IResource { // https://github.com/winglang/wing/issues/1961
inflight get(key: str): Json;
inflight set(key: str, value: Json): void;
}

class BucketBasedKeyValueStore impl IKVStore {
bucket: cloud.Bucket;
new() {
this.bucket = new cloud.Bucket();
}
pub inflight get(key: str): Json {
return this.bucket.getJson(key);
}
pub inflight set(key: str, value: Json): void {
this.bucket.putJson(key, value);
}
}

Complete IKVStore

bring cloud;

interface IKVStore extends std.IResource {
inflight get(key: str): Json;
inflight set(key: str, value: Json): void;
}

class BucketBasedKeyValueStore impl IKVStore {
bucket: cloud.Bucket;
new() {
this.bucket = new cloud.Bucket();
}
pub inflight get(key: str): Json {
return this.bucket.getJson(key);
}
pub inflight set(key: str, value: Json): void {
this.bucket.putJson(key, value);
}
}

class TableBasedKeyValueStore impl IKVStore {
table: cloud.Table;
new() {
this.table = new cloud.Table(
name: "table",
primaryKey: "key",
columns: {
value: ex.ColumnType.STRING
}
);
}
pub inflight get(key: str): Json {
return this.table.get(key);
}
pub inflight set(key: str, value: Json): str {
this.table.insert(key, value);
}
}

let bucketBased: IKVStore = new BucketBasedKeyValueStore();
let tableBased: IKVStore = new TableBasedKeyValueStore();

let testKv = inflight (kv: IKVStore):void => {
kv.set("k", Json {
value: "v"
});
let result = kv.get("k");
log("{result.get("value")}");
assert("v" == str.fromJson(result.get("value")));
};

new cloud.Function(inflight () => {
log("testing bucketBased KVStore");
testKv(bucketBased);
log("testing tableBased KVStore");
testKv(tableBased);
});