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userFunctions.js
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userFunctions.js
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const AWS = require('aws-sdk');
const dynamo = new AWS.DynamoDB.DocumentClient();
const userTable = process.env.USER_TABLE;
exports.handler = async (event, context) => {
let body;
let statusCode = 200;
const headers = {
'Content-Type': 'application/json',
};
try {
switch (event.routeKey) {
//DELETE User by ID
case 'DELETE /users/{id}':
await dynamo
.delete(
{
TableName: userTable,
Key: {
id: event.pathParameters.id,
},
},
(err, data) => {
if (err) {
console.log('err: ', err);
} else {
console.log('data: ', data);
}
}
)
.promise();
body = `Deleted user ${event.pathParameters.id}`;
break;
//GET User by ID
case 'GET /users/{id}':
body = await dynamo
.get(
{
TableName: userTable,
Key: {
id: event.pathParameters.id,
},
},
(err, data) => {
if (err) {
console.log('err: ', err);
} else {
console.log('data: ', data);
}
}
)
.promise();
break;
//GET all users
case 'GET /users':
body = await dynamo.scan({ TableName: userTable }).promise();
break;
//UPDATE user by ID
case 'PUT /users/{id}':
const requestJSON = JSON.parse(event.body);
const params = {
Key: {
id: event.pathParameters.id,
},
ExpressionAttributeNames: {
'#name': 'name',
'#city': 'city',
'#country': 'country',
'#company': 'company',
'#description': 'description',
},
ExpressionAttributeValues: {
':name': requestJSON.form.name,
':city': requestJSON.form.city,
':country': requestJSON.form.country,
':company': requestJSON.form.company,
':description': requestJSON.form.description,
},
UpdateExpression:
'SET #name = :name, #city = :city, #country = :country, #company = :company, #description = :description',
TableName: userTable,
};
await dynamo
.update(params, (err, data) => {
if (err) {
console.log(err);
} else {
console.log(data);
}
})
.promise();
body = {
message: `Put user ${event.pathParameters.id}`,
};
break;
default:
throw new Error(`Unsupported route: "${event.routeKey}"`);
}
} catch (err) {
statusCode = 400;
body = err.message;
} finally {
body = JSON.stringify(body);
}
return {
statusCode,
body,
headers,
};
};