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permissions.js
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permissions.js
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'use strict';
const _ = require('lodash');
module.exports = {
compilePermissions() {
this.validated.events.forEach((event) => {
const websocketApiId = this.provider.getApiGatewayWebsocketApiId();
const lambdaLogicalId = this.provider.naming.getLambdaLogicalId(event.functionName);
const websocketsPermissionLogicalId = this.provider.naming.getLambdaWebsocketsPermissionLogicalId(
event.functionName
);
_.merge(this.serverless.service.provider.compiledCloudFormationTemplate.Resources, {
[websocketsPermissionLogicalId]: {
Type: 'AWS::Lambda::Permission',
DependsOn: websocketApiId.Ref ? [websocketApiId.Ref, lambdaLogicalId] : [lambdaLogicalId],
Properties: {
FunctionName: {
'Fn::GetAtt': [lambdaLogicalId, 'Arn'],
},
Action: 'lambda:InvokeFunction',
Principal: 'apigateway.amazonaws.com',
},
},
});
if (event.authorizer) {
const websocketsAuthorizerPermissionLogicalId = this.provider.naming.getLambdaWebsocketsPermissionLogicalId(
event.authorizer.name
);
const authorizerPermissionTemplate = {
[websocketsAuthorizerPermissionLogicalId]: {
Type: 'AWS::Lambda::Permission',
DependsOn: websocketApiId.Ref ? [websocketApiId.Ref] : [],
Properties: {
Action: 'lambda:InvokeFunction',
Principal: 'apigateway.amazonaws.com',
},
},
};
if (_.isObject(event.authorizer.permission) || event.authorizer.permission.includes(':')) {
authorizerPermissionTemplate[
websocketsAuthorizerPermissionLogicalId
].Properties.FunctionName = event.authorizer.permission;
} else {
authorizerPermissionTemplate[
websocketsAuthorizerPermissionLogicalId
].Properties.FunctionName = {
'Fn::GetAtt': [event.authorizer.permission, 'Arn'],
};
authorizerPermissionTemplate[websocketsAuthorizerPermissionLogicalId].DependsOn.push(
event.authorizer.permission
);
}
_.merge(
this.serverless.service.provider.compiledCloudFormationTemplate.Resources,
authorizerPermissionTemplate
);
}
});
},
};