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ddbApi.js
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ddbApi.js
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const DDB = require("@aws-sdk/client-dynamodb");
const AWS_REGION = process.env.AWS_REGION;
// Function to create a new item in DynamoDB
async function createDDBItem(credentials, tenantId, time, tableName) {
const config = {
region: AWS_REGION,
credentials: {
accessKeyId: credentials.AccessKeyId,
secretAccessKey: credentials.SecretAccessKey,
sessionToken: credentials.SessionToken,
},
};
const ddbClient = new DDB.DynamoDBClient(config);
const input = {
TableName: tableName,
Item: {
tenant_id: {
S: tenantId,
},
updated_at: {
S: time.toString(),
},
created_at: {
S: time.toString(),
},
},
};
const command = new DDB.PutItemCommand(input);
try {
const response = await ddbClient.send(command);
return response.$metadata.httpStatusCode;
} catch (e) {
throw new Error(e.__type);
}
}
// Function to read an item from DynamoDB
async function readDDBItem(credentials, tenantId, time, tableName) {
const config = {
region: AWS_REGION,
credentials: {
accessKeyId: credentials.AccessKeyId,
secretAccessKey: credentials.SecretAccessKey,
sessionToken: credentials.SessionToken,
},
};
const ddbClient = new DDB.DynamoDBClient(config);
const input = {
TableName: tableName,
Key: {
'tenant_id': {
S: tenantId,
}
},
};
const command = new DDB.GetItemCommand(input);
try {
const response = await ddbClient.send(command);
return response;
} catch (e) {
throw new Error(e.__type);
}
}
// Function to update an item in DynamoDB
async function updateDDBItem(credentials, tenantId, time, tableName, parameters) {
const config = {
region: AWS_REGION,
credentials: {
accessKeyId: credentials.AccessKeyId,
secretAccessKey: credentials.SecretAccessKey,
sessionToken: credentials.SessionToken,
},
};
const ddbClient = new DDB.DynamoDBClient(config);
const input = {
ExpressionAttributeNames: {
"#O": parameters.key,
},
ExpressionAttributeValues: {
":o": {
S: parameters.value,
},
},
TableName: tableName,
Key: {
tenant_id: {
S: tenantId,
}
},
"UpdateExpression": "SET #O = :o"
};
const command = new DDB.UpdateItemCommand(input);
try {
const response = await ddbClient.send(command);
return response.$metadata.httpStatusCode;
} catch (e) {
throw new Error(e.__type);
}
}
// Function to delete an item from DynamoDB
async function deleteDDBItem(credentials, tenantId, time, tableName) {
const config = {
region: AWS_REGION,
credentials: {
accessKeyId: credentials.AccessKeyId,
secretAccessKey: credentials.SecretAccessKey,
sessionToken: credentials.SessionToken,
},
};
const ddbClient = new DDB.DynamoDBClient(config);
const input = {
TableName: tableName,
Key: {
'tenant_id': {
S: tenantId,
}
},
};
const command = new DDB.DeleteItemCommand(input);
try {
const response = await ddbClient.send(command);
return response.$metadata.httpStatusCode;
} catch (e) {
throw new Error(e.__type);
}
}
// Export the functions for use in other modules
exports.createDDBItem = createDDBItem;
exports.readDDBItem = readDDBItem;
exports.updateDDBItem = updateDDBItem;
exports.deleteDDBItem = deleteDDBItem;