Convert Grafana dashboard json to jsonnet

dashbord-to-jsonnet.py

#!/usr/bin/env python
import json
from jinja2 import Template
# git clone https://github.com/pingcap/tidb-docker-compose
# cd tidb-docker-compose
# git clone https://github.com/tennix/grafonnet-lib -b table
# python dashboard-to-jsonnet.py > pd.jsonnet
# jsonnet -J grafonnet-lib pd.jsonnet > config/dashboards/generated-pd.json
with open('config/dashboards/pd.json', 'r') as f:
    data = json.load(f)

# Ref https://github.com/grafana/grafonnet-lib for jsonnet template.
tmpl = """local grafana = import 'grafonnet/grafana.libsonnet';
local dashboard = grafana.dashboard;
local row = grafana.row;
local graphPanel = grafana.graphPanel;
local tablePanel = grafana.tablePanel;
local singlestat = grafana.singlestat;
local prometheus = grafana.prometheus;
local template = grafana.template;

dashboard.new(
  'PD',
  editable=true,
  schemaVersion=14,
  refresh='1m',
  time_from='now-30m',
  tags=['tidb'],
)
.addTemplate(
  template.datasource(
    'datasource',
    'prometheus',
    'Prometheus',
  )
)
.addTemplate(
  template.new(
    'instance',
    '$datasource',
    'label_values(pd_cluster_status, instance)',
    label='instance',
    refresh='time',
  )
)
.addTemplate(
  template.new(
    'namespace',
    '$datasource',
    'label_values(pd_cluster_status{instance="$instance"}, namespace)',
    label='namespace',
    refresh='time',
  )
)
{% for row in rows %}
.addRow(
  row.new(
    "{{ row.title }}",
    collapse='true',
  )
    {% for panel in row.panels %}
    {% if panel.type == 'singlestat' %}
    .addPanel(
      singlestat.new(
        "{{ panel.title }}",
        datasource='$datasource',
        mappingType={{ panel.mappingType }},
        rangeMaps={{ panel.rangeMaps | tojson }},
        format='{{ panel.format }}',
        sparklineShow={{ panel.sparkline.show | tojson }},
      )
    {% for target in panel.targets %}
      .addTarget(
        prometheus.target(
          '{{ target.expr }}',
          format='{{ target.format }}',
          legendFormat='{{ target.legendFormat }}',
        )
      )
    {% endfor %}
    )
    {% elif panel.type == 'graph' %}
    .addPanel(
      graphPanel.new(
        "{{ panel.title }}",
        datasource='$datasource',
        {% if panel.legend.rightSide %}legend_rightSide={{ panel.legend.rightSide | tojson }},{% endif %}
      )
    {% for target in panel.targets %}
      .addTarget(
        prometheus.target(
          '{{ target.expr }}',
          format='{{ target.format }}',
          legendFormat='{{ target.legendFormat }}',
        )
      )
    {% endfor %}
    )
    {% elif panel.type == 'table' %}
    .addPanel(
      tablePanel.new(
        "{{ panel.title }}",
        datasource='$datasource',
        columns={{ panel.columns | tojson }},
        transform='{{ panel.transform }}',
        styles={{ panel.styles | tojson }},
      )
    {% for target in panel.targets %}
      .addTarget(
        prometheus.target(
          '{{ target.expr }}',
          format='{{ target.format }}',
          legendFormat='{{ target.legendFormat }}',
        )
      )
    {% endfor %}
    )
    {% endif %}
    {% endfor %}
  )
{% endfor %}
.addRequired('grafana', 'grafana', 'Grafana', '5.0.0')
.addRequired('panel', 'graph', 'Graph', '5.0.0')
.addRequired('datasource', 'prometheus', 'Prometheus', '5.0.0')
.addRequired('panel', 'singlestat', 'Singlestat', '5.0.0')
"""

template = Template(tmpl)
print template.render(rows=data['rows'])