https://github.com/andriykalashnykov/dapr-go
Dapr GoLang example
https://github.com/andriykalashnykov/dapr-go
Last synced: 8 months ago
JSON representation
Dapr GoLang example
- Host: GitHub
- URL: https://github.com/andriykalashnykov/dapr-go
- Owner: AndriyKalashnykov
- License: apache-2.0
- Created: 2024-01-18T12:42:55.000Z (over 1 year ago)
- Default Branch: main
- Last Pushed: 2024-09-28T05:04:33.000Z (about 1 year ago)
- Last Synced: 2025-02-24T06:49:48.760Z (8 months ago)
- Language: Shell
- Size: 253 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# dapr-go
This repository aims to show how to use Dapr Ambient and Dapr building blocks (State management and Pub/Sub) with multiples services into a cluster kubernetes.
## Architecture
Below, you can see a high-level and simple architecture used on this example.
### subscriber
Subscriber just listen by notifications sent from [write-values](#write-values). This component receives all notifications and requests from `dapr` through `dapr-ambient` proxy.
### write-values
Write-values is responsible for save values into `redis` through `dapr-ambient`.
```
curl -X POST http://192.168.200.5:80?value=90
```
### read-values
Read-values reads all values created by `write-values` and returns an average.
```
curl http://192.168.200.4:80
```
## Installation
### minikube
```bash
make start-minikube
```
### [Dapr](https://docs.dapr.io/operations/hosting/kubernetes/kubernetes-deploy/)
```bash
helm repo add dapr https://dapr.github.io/helm-charts/
helm repo update
helm search repo dapr --devel --versions
helm upgrade --install dapr dapr/dapr \
--version=1.14.4 \
--namespace dapr-system \
--create-namespace \
--wait
# Dapr Dashboard
helm install dapr-dashboard dapr/dapr-dashboard --namespace dapr-system
kubectl get pods --namespace dapr-system
kubectl port-forward -n dapr-system svc/dapr-dashboard 8080:8080
xdg-open http://localhost:8080/overview
```
Uninstall
```bash
helm uninstall dapr --namespace dapr-system
helm uninstall dapr-dashboard --namespace dapr-system
```
### Redis
```bash
helm repo add bitnami https://charts.bitnami.com/bitnami
helm repo update
kubectl create ns dapr-go
export REDIS_PASSWORD=$(kubectl get secret --namespace dapr-go redis-password-secret -o jsonpath="{.data.redis-password}" | base64 -d)
echo $REDIS_PASSWORD
helm upgrade --install redis bitnami/redis --namespace ${DAPRGO_NS} --set auth.existingSecret=redis-password-secret --set architecture=standalone --set replica.replicaCount=1
kubectl run --namespace dapr-go redis-client --restart='Never' --env REDIS_PASSWORD=$REDIS_PASSWORD --image docker.io/bitnami/redis:7.2.5-debian-12-r0 --command -- sleep infinity
kubectl exec --tty -i redis-client --namespace dapr-go -- bash
REDISCLI_AUTH="$REDIS_PASSWORD" redis-cli -h redis-master
kubectl port-forward --namespace dapr-go svc/redis-master 6379:6379 &
REDISCLI_AUTH="$REDIS_PASSWORD" redis-cli -h 127.0.0.1 -p 6379
```
Redis® can be accessed via port 6379 on the following DNS name from within your cluster:
redis-master.dapr-go.svc.cluster.local
To get your password run:
export REDIS_PASSWORD=$(kubectl get secret --namespace dapr-go redis-password-secret -o jsonpath="{.data.redis-password}" | base64 -d)
To connect to your Redis® server:
1. Run a Redis® pod that you can use as a client:
kubectl run --namespace dapr-go redis-client --restart='Never' --env REDIS_PASSWORD=$REDIS_PASSWORD --image docker.io/bitnami/redis:7.2.5-debian-12-r0 --command -- sleep infinity
Use the following command to attach to the pod:
kubectl exec --tty -i redis-client --namespace dapr-go -- bash
2. Connect using the Redis® CLI:
REDISCLI_AUTH="$REDIS_PASSWORD" redis-cli -h redis-master
To connect to your database from outside the cluster execute the following commands:
kubectl port-forward --namespace dapr-go svc/redis-master 6379:6379 &
REDISCLI_AUTH="$REDIS_PASSWORD" redis-cli -h 127.0.0.1 -p 6379
WARNING: There are "resources" sections in the chart not set. Using "resourcesPreset" is not recommended for production. For production installations, please set the following values according to your workload needs:
- replica.resources
- master.resources
Uninstall
```bash
helm uninstall redis --namespace dapr-go
```
### Referencec
* [DAPR arguments annotations overview](https://docs.dapr.io/reference/arguments-annotations-overview/)
* [Reference secrets in components - Non-default namespaces](https://docs.dapr.io/operations/components/component-secrets/#non-default-namespaces)
* [go-sdk examples](https://github.com/dapr/go-sdk/tree/main/examples/pubsub)
* [dapr-shared-examples](https://github.com/salaboy/dapr-shared-examples)