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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width">
<title>CEL-Tester</title>
<style>
@import url('https://fonts.googleapis.com/css2?family=Open+Sans&display=swap');
* { box-sizing: border-box; }
html, body {
height: 100vh;
width: 100vw;
margin: 0;
padding: 0;
font-family: 'Open Sans';
}
h1, .about {
text-align: center;
margin: 0;
}
main {
width: 80%;
height: 80%;
margin: 1em auto;
padding: 2em;
display: grid;
grid-template-columns: 1fr 1fr;
grid-template-rows: 0.5fr 1.5fr 0.5fr 0.5fr;
gap: 0px 10px;
grid-template-areas:
"headers expression ."
"body expression ."
"header header ."
"result result .";
}
#headers {grid-area: headers;}
#body {grid-area: body;}
#expressionLabel {grid-area: expression;}
#resultHeader {grid-area: header;}
#result {grid-area: result;}
label {
display: flex;
flex-direction: column;
text-align: center;
font-size: 1.5em;
}
textarea {
display: block;
width: 100%;
height: 100%;
font-size: initial;
resize: none;
}
#resultHeader {
font-size: 1.8em;
margin: 0;
align-self: end;
text-align: center;
}
#result {
margin: 1em 0;
padding: 1em;
border: 2px solid grey;
}
</style>
</head>
<body>
</body>
<script src="wasm_exec.js"></script>
<h1>CEL-Tester</h1>
<p class="about">Based on <a href="https://github.com/tektoncd/triggers/tree/main/cmd/cel-eval">cel-eval</a> from Tekton Triggers</p>
<main>
<label id="headers">
Header Data
<textarea id="headerData">
POST /foo HTTP/1.1
Content-Type: application/json
X-Header: tacocat</textarea>
</label>
<label id="body">
Body Data
<textarea id="bodyData">{"test": {"nested": "value"}}</textarea>
</label>
<label id="expressionLabel">
Expression
<textarea id="expression">body.test.nested == "value"</textarea>
</label>
<h2 id="resultHeader">Result</h2>
<p id="result"></p>
</main>
<script>
async function runWasm() {
const go = new Go();
const result = await WebAssembly.instantiateStreaming(fetch("lib.wasm"), go.importObject);
go.run(result.instance);
testExpression();
}
runWasm();
function testExpression() {
let header = document.getElementById('headerData').value.trim();
let body = document.getElementById('bodyData').value.trim();
let request = header + "\nContent-Length: " + body.length + "\n\n" + body
let result = window.cel(request, document.getElementById('expression').value)
document.getElementById('result').innerText = result;
}
document.getElementById('headerData').addEventListener('keyup', testExpression);
document.getElementById('bodyData').addEventListener('keyup', testExpression);
document.getElementById('expression').addEventListener('keyup', testExpression);
</script>
</html>