Firebase remote config - creating parameter groups programmatically

Question

I have created a cloud function to update my remote configs in a specific manner. I followed the guide as per documentation.

Following is the code snippet.

exports.updateTenantFeatures = functions
  .region(DEFAULT_LOCATION)
  .https.onCall(async (data, context) => {
    try {
     if (!context.auth) {
       throw new UnauthenticatedError(
        constants.ERROR_TEXT.CIVIS_UNAUTHENTICATED_TEXT,
        constants.ERROR_CODE.CIVIS_UNAUTHENTICATED, 
     );
    }

    const country = getCountryName(data.countryCode);
    const poolId = data.poolId;
    const remoteConfig = admin.remoteConfig();
    const template = await remoteConfig.getTemplate();

    const featureList = JSON.stringify({ [data.featureName]: data.featureState });

    template.parameterGroups[`${country}_${poolId}`].parameters[`${country}_${poolId}_features`] = {
      valueType: "JSON",
      defaultValue: {
      value: featureList,
    },
    description: `tenant of pool id ${poolId} from ${country}'s feature list`
    }

    const result = await remoteConfig.publishTemplate(template);

    return {
      result: constants.RESULT.SUCCESS, 
      tenantFeatuerList: result.parameters[`${country}_${poolId}_features`] 
    };
  
    } catch (error: any) {
      if (error?.type === constants.ERROR_TYPE.UNAUTHENTICATED ||
         error?.type ===  constants.ERROR_TYPE.UNAUTHORIZED)
      { 
        return { result: constants.RESULT.ERROR, code: error.code, details: error.message }
      }
      return { result: constants.RESULT.ERROR }
      }
   });

The goal of this function is to create parameters nested inside a parameter group programmatically. Attached image depicts how this is expected to be structured.

Problem is when I'm using template.parameterGroups[`${country}_${poolId}`]... it doesn't create a parameter group as expected. It throws the following error in Logs.

error in updateTenantFeatures : TypeError: Cannot read properties of undefined (reading 'parameters')

But however if I ignore creating the parameter group and focus on creating parameters by removing the parameterGroups as template.parameters[`${country}_${poolId}_features`] = ... it creates just the parameter.

Is the parameter group creation restricted by the admin sdk ? Or is the SDK having some issue(s) in creating parameter groups ?

The error message is telling you that template.parameterGroups[`${country}_${poolId}`] is undefined. What are you expecting it to be instead? You have a lot of variables here that we can't see, so we don't know much about what you're actually working with. Try logging everything to see that it's all what you expect. — Doug Stevenson
– Doug Stevenson, Commented Jul 7, 2023 at 12:09
@DougStevenson I'm trying to create the parameter group along with the parameter nested inside it. I debugged this a couple of times & the issue I'm facing is that the SDK won't allow it. It seems that the SDK only allows to nest the parameter inside parameter groups that are available. — Pasindu Dilshan
– Pasindu Dilshan, Commented Jul 7, 2023 at 13:38
Based on this documentation it seems I can achieve my goal with the REST api. I'm attempting to do the same thing here with the node admin SDK. — Pasindu Dilshan
– Pasindu Dilshan, Commented Jul 7, 2023 at 14:18

Pasindu Dilshan · Accepted Answer · 2023-07-10 05:53:40Z

I was able to figure out to do this by making a simple if condition in the code.

exports.updateTenantFeatures = functions
  .region(DEFAULT_LOCATION)
  .https.onCall(async (data, context) => {
    try {
      ...

      const country = getCountryName(data.countryCode);
      const poolId = data.poolId;
      const remoteConfig = admin.remoteConfig();
      const template = await remoteConfig.getTemplate();

      const featureList = JSON.stringify({
        [data.featureName]: data.featureState,
      });

      if (!template.parameterGroups[`${country}_${poolId}`]) {
        template.parameterGroups[`${country}_${poolId}`] = {
          parameters: {
            [`${country}_${poolId}_features`]: {
              valueType: 'JSON',
              defaultValue: {value: featureList},
            },
          },
          description: `tenant of pool id ${poolId} from ${country}'s feature list`,
        };
      } else {
        template.parameterGroups[`${country}_${poolId}`].parameters[
          `${country}_${poolId}_features`
        ] = {
          valueType: 'JSON',
          defaultValue: {
            value: featureList,
          },
          description: `tenant of pool id ${poolId} from ${country}'s feature list`,
        };
      }

      const result = await remoteConfig.publishTemplate(template);
      ...
      // Handle result
    } catch (error: any) {
      ...
      // Handle errors
    }
  });

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