Container & Kubernetes Deployment

1. Docker Container Deployment

The iris2bq utility is packaged as a multi-stage Docker image based on alpine:latest. The container contains CA certificates for secure Google Cloud Storage and BigQuery API endpoints and runs with zero external C dependencies.

Building the Docker Image

# Build Docker image
docker build -t iris2bq:latest .

# Verify image creation
docker images iris2bq

Dockerfile Specification

# Multi-stage Dockerfile for iris2bq

FROM golang:1.22-alpine AS builder

WORKDIR /app

COPY go.mod go.sum ./
RUN go mod download

COPY . .

RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-w -s" -o iris2bq main.go

FROM alpine:3.19

RUN apk add --no-cache ca-certificates tzdata

WORKDIR /app

COPY --from=builder /app/iris2bq /app/iris2bq
COPY config.example.yaml /app/config.yaml

ENTRYPOINT ["/app/iris2bq"]
CMD ["-config", "/app/config.yaml"]

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2. Kubernetes CronJob Deployment

Running iris2bq as a Kubernetes CronJob enables automated synchronization of InterSystems IRIS tables into Google Cloud BigQuery datasets on a predefined cron schedule (e.g. daily at 02:00 AM).

Kubernetes Manifest Specification (kubernetes-cronjob.yaml)

apiVersion: batch/v1
kind: CronJob
metadata:
  name: iris2bq-daily-sync
  namespace: data-pipeline
spec:
  schedule: "0 2 * * *" # Everyday at 02:00 AM
  jobTemplate:
    spec:
      template:
        spec:
          containers:
          - name: iris2bq
            image: iris2bq:latest
            env:
            - name: GCP_PROJECT
              value: "my-gcp-project"
            - name: BQ_DATASET
              value: "iris_production"
            - name: GCS_TMP_BUCKET
              value: "iris-bq-staging-prod"
            - name: IRIS_HOST
              value: "iris-service.database.svc.cluster.local"
            - name: IRIS_PORT
              value: "1972"
            - name: IRIS_USER
              valueFrom:
                secretKeyRef:
                  name: iris-credentials
                  key: username
            - name: IRIS_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: iris-credentials
                  key: password
            - name: IRIS_TABLES
              value: "Sample.Person,Sample.Company,User.Patient"
          restartPolicy: OnFailure