Class: Pfab::Templates::Web

Inherits:
Base
  • Object
show all
Defined in:
lib/pfab/templates/web.rb

Instance Method Summary collapse

Methods inherited from Base

#app_vars, #cpu, #deploy_id, #env_vars, #get, #image_name, #initialize, #load_env_vars, #load_secrets, #memory, #resources

Constructor Details

This class inherits a constructor from Pfab::Templates::Base

Instance Method Details

#application_type ⇒ Object 



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# File 'lib/pfab/templates/web.rb', line 139

def application_type
  "web"
end

#default_probe ⇒ Object 



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# File 'lib/pfab/templates/web.rb', line 120

def default_probe
  {
    httpGet: {
      path: get("health_check_path") || "/",
      port: get("port"),
    },
    initialDelaySeconds: 15,
    timeoutSeconds: 3
  }
end

#deployment ⇒ Object 



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# File 'lib/pfab/templates/web.rb', line 143

def deployment
  {
    kind: "Deployment",
    apiVersion: "apps/v1",
    metadata: {
      name: @data['deployed_name'],
      namespace: @data['env'],
      labels: {
        application: @data['application'],
        "deployed-name" => @data['deployed_name'],
        "application-type" => application_type,
        "deploy-id" => deploy_id,
        "tags.datadoghq.com/env": @data['env'],
        "tags.datadoghq.com/service": @data['deployed_name'],
        "tags.datadoghq.com/service": @data['sha']
      }
    },
    spec: {
      replicas: get("replicas") || 1,
      selector: {
        matchLabels: {
          "deployed-name" => @data['deployed_name'],
        },
      },
      strategy: {
        type: "RollingUpdate",
        rollingUpdate: {
          maxSurge: 1,
          maxUnavailable: 0,
        }
      },
      revisionHistoryLimit: 5,
      progressDeadlineSeconds: 120,
      template: {
        metadata: {
          labels: {
            application: @data['application'],
            "deployed-name" => @data['deployed_name'],
            "application-type" => "web",
            "tags.datadoghq.com/env": @data['env'],
            "tags.datadoghq.com/service": @data['deployed_name'],
            "tags.datadoghq.com/version": @data['sha']
          },
        },
        spec: {
          containers: [
            {
              image: image_name,
              name: @data['deployed_name'],
              command: get("command").split(" "),
              env: env_vars,
              resources: resources,
              livenessProbe: livenessProbe,
              readinessProbe: readinessProbe,
              volumeMounts: [
                {
                  name: "apmsocketpath",
                  mountPath: "/var/run/datadog"
                }
              ]
            }
          ],
          volumes: [
            {
              name: "apmsocketpath",
              hostPath: {
                path: "/var/run/datadog/",
              }
            }
          ],
        },
      },
    },
  }
end

#hosts ⇒ Object 



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# File 'lib/pfab/templates/web.rb', line 77

def hosts
  get("host").split(",")
end

#ingress ⇒ Object 



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# File 'lib/pfab/templates/web.rb', line 48

def ingress
  {
    apiVersion: "networking.k8s.io/v1",
    kind: "Ingress",
    metadata: {
      name: "ingress-#{@data['deployed_name']}",
      namespace: @data['env'],
      labels: {
        application: @data['application'],
        "deployed-name" => @data['deployed_name'],
      },
      annotations: ingress_annotations,
    },
    spec: {
      rules: rules,
      tls: tls_hosts
    },
  }
end

#ingress_annotations ⇒ Object 



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# File 'lib/pfab/templates/web.rb', line 105

def ingress_annotations
  h = {
    "kubernetes.io/ingress.class" => "traefik",
    "traefik.frontend.passHostHeader" => "false",
    "traefik.frontend.priority" => "1",
    "traefik.frontend.entryPoints" => "https",
    "traefik.protocol" => get("protocol") || "http",
    "traefik.frontend.headers.SSLRedirect" => "true",
    "traefik.docker.network" => "traefik",
    "traefik.ingress.kubernetes.io/router.entrypoints" => "websecure",
    "traefik.ingress.kubernetes.io/router.tls" => "true"
  }
  h
end

#livenessProbe ⇒ Object 



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# File 'lib/pfab/templates/web.rb', line 131

def livenessProbe
  get("livenessProbe") || default_probe
end

#readinessProbe ⇒ Object 



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# File 'lib/pfab/templates/web.rb', line 135

def readinessProbe
  get("readinessProbe") || default_probe
end

#rules ⇒ Object 



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# File 'lib/pfab/templates/web.rb', line 81

def rules
  hosts.map do |host|
    {
      host: host,
      http: {
        paths: [
          {
            path: "/",
            pathType: "Prefix",
            backend: {
              service: {
                name: @data['deployed_name'],
                port: {
                  name: "http"
                }
              }
            },
          },
        ],
      },
    }
  end
end

#service ⇒ Object 



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# File 'lib/pfab/templates/web.rb', line 14

def service
  {
    apiVersion: "v1",
    kind: "Service",
    metadata: {
      name: @data['deployed_name'],
      namespace: @data['env'],
      labels: {
        application: @data['application'],
        "deployed-name" => @data['deployed_name'],
      },
      annotations: service_annotations,
    },
    spec: {
      selector: {
        "deployed-name" => @data['deployed_name'],
      },
      ports: [
        {
          name: "http",
          port: 80,
          targetPort: get("port"),
        }
      ]
    }
  }
end

#service_annotations ⇒ Object 



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# File 'lib/pfab/templates/web.rb', line 42

def service_annotations
  h = {}
  h["traefik.ingress.kubernetes.io/service.serversscheme"] = "h2c" if get("protocol") == "h2c"
  h
end

#tls_hosts ⇒ Object 



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# File 'lib/pfab/templates/web.rb', line 68

def tls_hosts
  hosts.map do |host|
    {
      hosts: [host],
      secretName: get("tls_cert_secret")
    }
  end
end

#write_to(f) ⇒ Object 



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# File 'lib/pfab/templates/web.rb', line 4

def write_to(f)
  if get("host").nil?
    puts "No host to deploy to for #{@data['deployed_name']}. Skipping."
  else
    f << YAML.dump(service.deep_stringify_keys)
    f << YAML.dump(ingress.deep_stringify_keys)
    f << YAML.dump(deployment.deep_stringify_keys)
  end
end