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feat: cast environment variable values to string #218

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feat: cast environment variable values to string #218

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c63fa18
feat: cast environment variable values to string
edaniszewski Jun 23, 2020
f65c7cf
update: coerce numbers to string, error on other non-string types for…
edaniszewski Jun 24, 2020
46fe9b9
update: use mapValues instead of transform
edaniszewski Jun 25, 2020
3fd3686
fix: fix env coerce function to work with mapValues
edaniszewski Jun 25, 2020
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21 changes: 17 additions & 4 deletions package/lib/compileFunctions.js
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Original file line number Diff line number Diff line change
Expand Up @@ -47,10 +47,9 @@ module.exports = {
'nodejs8';
funcTemplate.properties.timeout =
_.get(funcObject, 'timeout') || _.get(this, 'serverless.service.provider.timeout') || '60s';
funcTemplate.properties.environmentVariables = _.merge(
{},
_.get(this, 'serverless.service.provider.environment'),
funcObject.environment // eslint-disable-line comma-dangle
funcTemplate.properties.environmentVariables = _.mapValues(
_.merge({}, _.get(this, 'serverless.service.provider.environment'), funcObject.environment),
(value, key, result) => coerceEnvOrError(result, key, value)
);
funcTemplate.accessControl.gcpIamPolicy.bindings = _.unionBy(
_.get(funcObject, 'iam.bindings'),
Expand Down Expand Up @@ -198,6 +197,20 @@ const validateIamProperty = (funcObject, functionName) => {
}
};

const coerceEnvOrError = (result, key, value) => {
if (typeof value === 'string') {
result[key] = value;
} else if (typeof value === 'number') {
result[key] = value.toString();
} else {
const errorMessage = [
`The value for environment variable ${key} is an unsupported type: ${typeof value}.`,
' Values must either be strings or numbers (which are coerced into strings at package time).',
].join('');
throw new Error(errorMessage);
}
};

const getFunctionTemplate = (funcObject, projectName, region, sourceArchiveUrl) => {
//eslint-disable-line
return {
Expand Down
66 changes: 66 additions & 0 deletions package/lib/compileFunctions.test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -370,12 +370,72 @@ describe('CompileFunctions', () => {
});
});

it('should fail setting environment variable due to unsupported type (bool)', () => {
googlePackage.serverless.service.functions = {
func1: {
handler: 'func1',
environment: {
TEST_VAR: true,
},
events: [{ http: 'foo' }],
},
};

expect(() => googlePackage.compileFunctions()).toThrow(Error);
});

it('should fail setting environment variable due to unsupported type (null)', () => {
googlePackage.serverless.service.functions = {
func1: {
handler: 'func1',
environment: {
TEST_VAR: null,
},
events: [{ http: 'foo' }],
},
};

expect(() => googlePackage.compileFunctions()).toThrow(Error);
});

it('should fail setting environment variable due to unsupported type (object)', () => {
googlePackage.serverless.service.functions = {
func1: {
handler: 'func1',
environment: {
dev: {
TEST_VAR: 'test',
},
},
events: [{ http: 'foo' }],
},
};

expect(() => googlePackage.compileFunctions()).toThrow(Error);
});

it('should fail setting environment variable from provider due to unsupported type (bool)', () => {
googlePackage.serverless.service.functions = {
func1: {
handler: 'func1',
events: [{ http: 'foo' }],
},
};
googlePackage.serverless.service.provider.environment = {
TEST_VAR: true,
};

expect(() => googlePackage.compileFunctions()).toThrow(Error);
});

it('should set the environment variables based on the function configuration', () => {
googlePackage.serverless.service.functions = {
func1: {
handler: 'func1',
environment: {
TEST_VAR: 'test',
INT_VAR: 1,
FLOAT_VAR: 3.141,
},
events: [{ http: 'foo' }],
},
Expand All @@ -393,6 +453,8 @@ describe('CompileFunctions', () => {
availableMemoryMb: 256,
environmentVariables: {
TEST_VAR: 'test',
INT_VAR: '1',
FLOAT_VAR: '3.141',
},
timeout: '60s',
sourceArchiveUrl: 'gs://sls-my-service-dev-12345678/some-path/artifact.zip',
Expand Down Expand Up @@ -421,6 +483,8 @@ describe('CompileFunctions', () => {
};
googlePackage.serverless.service.provider.environment = {
TEST_VAR: 'test',
INT_VAR: 1,
FLOAT_VAR: 3.141,
};

const compiledResources = [
Expand All @@ -435,6 +499,8 @@ describe('CompileFunctions', () => {
availableMemoryMb: 256,
environmentVariables: {
TEST_VAR: 'test',
INT_VAR: '1',
FLOAT_VAR: '3.141',
},
timeout: '60s',
sourceArchiveUrl: 'gs://sls-my-service-dev-12345678/some-path/artifact.zip',
Expand Down