Replace an empty map with map data from a variable in yq

Question

Using mikefarah/yq (4.25.3) I am trying to replace an empty map in a yaml file with a map stored in a string.

This is the map data:

RESOURCES=$(cat <<EOF
limits:
  cpu: 4000m
  memory: 3600Mi
requests:
  cpu: 500m
  memory: 900Mi
EOF
)

And this is what I am trying to execute:

yq -i ".cluster.resources = \"${RESOURCES}\"" values.yaml

As a result I get a multiline string (instead of a map):

resources: |-
    limits:
      cpu: 4000m
      memory: 3600Mi
    requests:
      cpu: 500m
      memory: 900Mi

How do I insert a map instead?

resources:
  limits:
    cpu: 4000m
    memory: 3600Mi
  requests:
    cpu: 500m
    memory: 900Mi

Answer 1

Use the env() operator to load environment variable into yq:

RESOURCES=$(cat <<EOF
limits:
  cpu: 4000m
  memory: 3600Mi
requests:
  cpu: 500m
  memory: 900Mi
EOF
)  yq --null-input ".cluster.resources = env(RESOURCES)"

Will produce:

cluster:
  resources:
    limits:
      cpu: 4000m
      memory: 3600Mi
    requests:
      cpu: 500m
      memory: 900Mi