feat(quorum): implement istanbul_propose method to add or remove a no…

…de (#2516)

Changes:
- Introduced new helm chart named `quorum-propose-validator` at path `platforms/quorum/charts/`.
- This chart utilizes the `istanbul_propose` method to facilitate the addition or removal of nodes from the validator set based on majority votes.

fixes #2508

Signed-off-by: saurabhkumarkardam <saurabh.kumar.kardam@accenture.com>

platforms/quorum/charts/quorum-propose-validator/Chart.yaml

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+apiVersion: v1
+name: quorum-propose-validator
+description: "Quorum: Proposes to add or remove a validator with the specified address."
+version: 1.0.1
+appVersion: latest
+keywords:
+  - bevel
+  - ethereum
+  - quorum
+  - hyperledger
+  - enterprise
+  - blockchain
+  - deployment
+  - accenture
+home: https://hyperledger-bevel.readthedocs.io/en/latest/
+sources:
+  - https://github.com/hyperledger/bevel
+maintainers:
+  - name: Hyperledger Bevel maintainers
+    email: bevel@lists.hyperledger.org

platforms/quorum/charts/quorum-propose-validator/README.md

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+[//]: # (##############################################################################################)
+[//]: # (Copyright Accenture. All Rights Reserved.)
+[//]: # (SPDX-License-Identifier: Apache-2.0)
+[//]: # (##############################################################################################)
+
+# goquorum-propose-validator
+
+This chart is a component of Hyperledger Bevel. The goquorum-propose-validator chart injects a new authorization candidate that the validator attempts to push through. If a majority of the validators vote the candidate in/out, the candidate is added/removed in the validator set.
+
+## TL;DR
+
+```bash
+helm repo add bevel https://hyperledger.github.io/bevel
+helm install propose-validator bevel/goquorum-propose-validator
+```
+
+## Prerequisitess
+
+- Kubernetes 1.19+
+- Helm 3.2.0+
+
+If Hashicorp Vault is used, then
+- HashiCorp Vault Server 1.13.1+
+
+> **Important**: Also check the dependent charts.
+
+## Installing the Chart
+
+To install the chart with the release name `propose-validator`:
+
+```bash
+helm repo add bevel https://hyperledger.github.io/bevel
+helm install propose-validator bevel/goquorum-propose-validator
+```
+
+The command deploys the chart on the Kubernetes cluster in the default configuration. The [Parameters](#parameters) section lists the parameters that can be configured during installation.
+
+> **Tip**: List all releases using `helm list`
+
+## Uninstalling the Chart
+
+To uninstall/delete the `propose-validator` deployment:
+
+```bash
+helm uninstall propose-validator
+```
+
+The command removes all the Kubernetes components associated with the chart and deletes the release.
+
+## Parameters
+
+### Image
+
+| Name   | Description    | Default Value   |
+| -------------| ---------- | --------- |
+| `image.genesisUtils.repository`  | Quorum hooks image repository  | `ghcr.io/hyperledger/bevel-k8s-hooks` |
+| `image.genesisUtils.tag`  | Quorum hooks image tag  | `qgt-0.2.12` |
+| `image.pullSecret`    | Provide the docker secret name in the namespace  | `""` |
+| `image.pullPolicy`  | Pull policy to be used for the Docker images    | `IfNotPresent` |
+
+### validators
+
+| Name   | Description      | Default Value |
+| ----------------| ----------- | ------------- |
+| `validators.auth` | Set to 'true' to vote the candidate in and 'false' to vote them out | `true` |
+| `validators.authorizedValidatorsURL` | URLs of already authorized validators | `""` |
+| `validators.nonAuthorizedValidatorsNodeAddress` | Node addresses of the validators that need to be proposed | `""` |
+
+
+## License
+
+This chart is licensed under the Apache v2.0 license.
+
+Copyright © 2023 Accenture
+
+### Attribution
+
+This chart is adapted from the [charts](https://hyperledger.github.io/bevel/) which is licensed under the Apache v2.0 License which is reproduced here:
+
+```
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+```

platforms/quorum/charts/quorum-propose-validator/templates/_helpers.tpl

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+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "quorum-propose-validator.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "quorum-propose-validator.fullname" -}}
+{{- if .Values.fullnameOverride }}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- $name := default .Chart.Name .Values.nameOverride }}
+{{- if contains $name .Release.Name }}
+{{- .Release.Name | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+{{- end }}
+{{- end }}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "quorum-propose-validator.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}

platforms/quorum/charts/quorum-propose-validator/templates/propose-validator-job.yaml

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+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: {{ include "quorum-propose-validator.name" . }}
+  namespace: {{ .Release.Namespace }}
+  labels:
+    app: {{ .Release.Name }}
+    app.kubernetes.io/name: quorum-propose-validator-job
+    app.kubernetes.io/component: propose-validator-job
+    app.kubernetes.io/part-of: {{ include "quorum-propose-validator.fullname" . }}
+    app.kubernetes.io/namespace: {{ .Release.Namespace }}
+    app.kubernetes.io/release: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: helm
+spec:
+  backoffLimit: 3
+  template:
+    metadata:
+      labels:
+        app: {{ .Release.Name }}
+        app.kubernetes.io/name: quorum-propose-validator-job
+        app.kubernetes.io/component: propose-validator-job
+        app.kubernetes.io/part-of: {{ include "quorum-propose-validator.fullname" . }}
+        app.kubernetes.io/namespace: {{ .Release.Namespace }}
+        app.kubernetes.io/managed-by: helm
+    spec:
+      restartPolicy: "OnFailure"
+      containers:
+      - name: propose-validator
+        image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+        imagePullPolicy: {{ .Values.image.pullPolicy }}
+        securityContext:
+            runAsUser: 0
+        env:
+          - name: EXISTING_VALIDATOR_URLS
+            value: "{{- .Values.validators.existingValidators | join " " -}}"
+          - name: PROPOSE_VALIDATOR_ADDRS
+            value: "{{- .Values.validators.proposeValidatorsAddr | join " " -}}"
+        command: ["/bin/sh", "-c"]
+        args:
+          - |
+
+            for propose_val_addr in $PROPOSE_VALIDATOR_ADDRS; do
+              for existing_val_url in $EXISTING_VALIDATOR_URLS; do
+                # Send proposal to the existing validator
+                proposal_response=$(curl -s -X POST -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"{{ .Values.validators.consensusMethod}}","params":["'"$propose_val_addr"'",{{ .Values.validators.auth }}],"id":1}' "$existing_val_url")
+                
+                # Check if proposal was successful or not
+                result_count=$(echo "$proposal_response" | grep -c "result")
+                if [ "$result_count" = 1 ]; then
+                    echo "Node proposed successfully."
+                else
+                    echo "$proposal_response" | jq -r '.error'
+                fi
+              done
+            done
+            echo "COMPLETED"

platforms/quorum/charts/quorum-propose-validator/values.yaml

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+image:
+  repository: ghcr.io/hyperledger/bevel-k8s-hooks
+  tag: qgt-0.2.12
+  pullPolicy: IfNotPresent
+  pullSecret: ""
+
+validators:
+  consensusMethod: "istanbul_propose"
+  auth: true # Set to 'true' to vote the candidate in and 'false' to vote them out
+  # List of URLs of the existing validators
+  existingValidators:
+    # - "http://<test-1.yourDomain.com>"
+    # - "http://<test-2.yourDomain.com>"
+    # - "http://<test-3.yourDomain.com>"
+    # - "http://<test-4.yourDomain.com>"
+  # List of node addresses of the validators that need to be proposed
+  proposeValidatorsAddr:
+    # - "<0xnodeAddress-1>"
+    # - "<0xnodeAddress-2>"
+    # - "<0xnodeAddress-3>"