Modular Monolith

This monolithic repo hosts two independent Golang services, products and payments, as separate modules for independent deployments.

Branch	Default	Requirements
main	Yes	Treated as trunk/integration branch. Need to be stable all the time as changes in this branch auto-flow to other branches.
release	No	Releases are made from this branch. Have to be stable all the time.
restricted	No	Special branch whose merge to main is not allowed.

Notable features

• products service runs at 8080.
  • Graceful Termination
• payments service runs at 9090
  • Graceful Termination
• dynamic log level adjustment for each service.
• auto-merging of main branch to a configurable list of special branches via a Github App
• stopping the merging of restricted branch to default branch

Helm commands

To render templates

CONTEXT_PREFIX='kind'
CLUSTER_NAME='sandbox'
helm --kube-context "${CONTEXT_PREFIX}-${CLUSTER_NAME}" template -v 5 \
    --namespace products \
    --logtostderr \
    --debug \
    --values charts/products/values-default.yaml \
    products \
    charts/products

To install

CONTEXT_PREFIX='kind'
CLUSTER_NAME='sandbox'
helm --kube-context "${CONTEXT_PREFIX}-${CLUSTER_NAME}" upgrade \
    --wait \
    --create-namespace \
    --namespace products \
    --logtostderr \
    --debug \
    --install \
    --timeout 300s \
    --values charts/products/values-default.yaml \
    products \
    charts/products

To view upcoming changes

CONTEXT_PREFIX='kind'
CLUSTER_NAME='sandbox'
helm --kube-context "${CONTEXT_PREFIX}-${CLUSTER_NAME}" template \
    --namespace products \
    --values charts/products/values-default.yaml \
    products \
    charts/products 2>&1 | KUBECTL_EXTERNAL_DIFF="diff -u --color=always" kubectl --context "${CONTEXT_PREFIX}-${CLUSTER_NAME}" diff --namespace products -f - 2>&1