Querying exchange rate (api.exchangerate.host) always fails (self hosted infracost)

[Tomasz-Kluczkowski]

Hi,

I just noticed in the self hosted infracost-cloud-pricing-api pod's logs that it keeps repeating this set of error logs when cost estimations happen:

2023-11-29T09:23:52Z {"level":50,"time":1701249832660,"pid":18,"hostname":"infracost-cloud-pricing-api-7555d776c9-sttsg","msg":"Error querying exchange rate:"}
2023-11-29T09:23:52Z {"level":50,"time":1701249832660,"pid":18,"hostname":"infracost-cloud-pricing-api-7555d776c9-sttsg","err":{"type":"TypeError","message":"Cannot read properties of undefined (reading 'GBP')","stack":"TypeError: Cannot read properties of undefined (reading 'GBP')\n    at /usr/src/app/dist/utils/currency.js:281:58\n    at step (/usr/src/app/dist/utils/currency.js:33:23)\n    at Object.next (/usr/src/app/dist/utils/currency.js:14:53)\n    at fulfilled (/usr/src/app/dist/utils/currency.js:5:58)\n    at processTicksAndRejections (node:internal/process/task_queues:96:5)"},"msg":"Cannot read properties of undefined (reading 'GBP')"}
2023-11-29T09:23:52Z {"level":40,"time":1701249832660,"pid":18,"hostname":"infracost-cloud-pricing-api-7555d776c9-sttsg","msg":"No exchange rate found, falling back to default rate"}

I have checked and firewall does not block calls to api.exchangerate.host, I can see a bunch of them corresponding to the error logs from the infracost-cloud-pricing-api pod looking like this:

 HTTPS request from <pod's node ip address> to dashboard.api.infracost.io:443. Action: Allow.
-- | -- | -- | --

HTTPS request from  <pod's node ip address> to api.exchangerate.host:443. Action: Allow. <--- this one is repeated many times, corresponds to error logs in the infracost-cloud-pricing-api pod.

The commands for infracost are running in gitlab and I am using these variables to control currency and location:

variables:
  INFRACOST_AZURE_OVERRIDE_REGION: uksouth
  INFRACOST_CURRENCY: GBP

This is my script:

  script:
    - git clone $CI_REPOSITORY_URL --branch=$CI_MERGE_REQUEST_TARGET_BRANCH_NAME --single-branch /tmp/base

    - |
      cd /tmp/base
      infracost breakdown --config-file=${CONFIG_FILE} \
                          --format=json \
                          --out-file=infracost-base.json

    - |
      cd -
      infracost diff --config-file=${CONFIG_FILE} \
                     --compare-to=/tmp/base/infracost-base.json \
                     --format=json \
                     --out-file=infracost.json

    - |
      infracost comment gitlab --path=infracost.json \
                               --repo=$CI_PROJECT_PATH \
                               --merge-request=$CI_MERGE_REQUEST_IID \
                               --gitlab-server-url=$CI_SERVER_URL \
                               --gitlab-token=$GITLAB_API_TOKEN \
                               --behavior=update

is GBP incorrect value for exchangerate.host or for self hosted infracost it does not work as some kind of account needs to be set up with exchangerate.host?

Am I missing something?

Is there a way to debug this better and see more detail of the error log?

[Tomasz-Kluczkowski]

is it because for self hosted infracost I have no ability to specify API key for exchangerate.host as documented here? https://exchangerate.host/

[borjapenman]

exchangeapi.io works the same api.exchangerate.host worked wothout the key