{
  "kind": "open-flow-workflow",
  "version": 1,
  "name": "Alert on HTTP Status by SMS",
  "content": {
    "modelVersion": 14,
    "document": {
      "bindings": {},
      "graph": {
        "nodes": {
          "n_23bf965089a628ca": {
            "name": "Every five minutes",
            "kind": "cron",
            "cronTimes": [
              {
                "type": "cron",
                "expression": "*/5 * * * *",
                "timezone": "UTC"
              }
            ]
          },
          "n_a004452aea747d4b": {
            "inputs": {
              "initialUrl": {
                "kind": "value",
                "value": "YOUR_MONITORED_URL"
              },
              "previousState": {
                "kind": "sources",
                "sources": [
                  {
                    "kind": "node",
                    "nodeId": "n_c57969bfdaea1539",
                    "output": "state"
                  }
                ]
              }
            },
            "name": "Prepare the HTTP target",
            "kind": "task",
            "task": {
              "inputs": [
                {
                  "jsonSchema": {
                    "type": "string"
                  },
                  "nullable": false,
                  "handle": "initialUrl"
                },
                {
                  "jsonSchema": {
                    "type": "object",
                    "additionalProperties": true
                  },
                  "nullable": true,
                  "handle": "previousState"
                }
              ],
              "outputs": [
                {
                  "jsonSchema": {
                    "type": "string"
                  },
                  "nullable": false,
                  "handle": "url"
                }
              ],
              "name": "Prepare the HTTP target",
              "moduleId": "n_7e9d20ced39ab10d",
              "capabilities": [
                {
                  "kind": "connector",
                  "mode": "independent",
                  "actions": []
                }
              ]
            }
          },
          "n_c43d1d794093d8ed": {
            "inputs": {
              "url": {
                "kind": "sources",
                "sources": [
                  {
                    "kind": "node",
                    "nodeId": "n_a004452aea747d4b",
                    "output": "url"
                  }
                ]
              }
            },
            "name": "Check the HTTP status",
            "kind": "task",
            "task": {
              "inputs": [
                {
                  "jsonSchema": {
                    "type": "string"
                  },
                  "nullable": false,
                  "handle": "url"
                }
              ],
              "outputs": [
                {
                  "jsonSchema": {
                    "type": "string"
                  },
                  "nullable": true,
                  "handle": "body"
                },
                {
                  "jsonSchema": {
                    "type": "integer"
                  },
                  "nullable": false,
                  "handle": "statusCode"
                },
                {
                  "jsonSchema": {
                    "type": "object",
                    "additionalProperties": {
                      "type": "string"
                    }
                  },
                  "nullable": false,
                  "handle": "headers"
                }
              ],
              "name": "Check the HTTP status",
              "executor": {
                "method": "GET",
                "query": {
                  "mode": "fields",
                  "names": []
                },
                "headers": {
                  "mode": "fields",
                  "names": []
                },
                "bodyFormat": "none",
                "authentication": {
                  "type": "none"
                },
                "responseFormat": "text",
                "statusPolicy": "all",
                "kind": "http-request"
              }
            }
          },
          "n_c57969bfdaea1539": {
            "inputs": {
              "url": {
                "kind": "sources",
                "sources": [
                  {
                    "kind": "node",
                    "nodeId": "n_a004452aea747d4b",
                    "output": "url"
                  }
                ]
              },
              "statusCode": {
                "kind": "sources",
                "sources": [
                  {
                    "kind": "node",
                    "nodeId": "n_c43d1d794093d8ed",
                    "output": "statusCode"
                  }
                ]
              },
              "headers": {
                "kind": "sources",
                "sources": [
                  {
                    "kind": "node",
                    "nodeId": "n_c43d1d794093d8ed",
                    "output": "headers"
                  }
                ]
              },
              "previousState": {
                "kind": "sources",
                "sources": [
                  {
                    "kind": "node",
                    "nodeId": "n_c57969bfdaea1539",
                    "output": "state"
                  }
                ]
              }
            },
            "name": "Evaluate the HTTP response",
            "kind": "task",
            "task": {
              "inputs": [
                {
                  "jsonSchema": {
                    "type": "string"
                  },
                  "nullable": false,
                  "handle": "url"
                },
                {
                  "jsonSchema": {
                    "type": "integer"
                  },
                  "nullable": false,
                  "handle": "statusCode"
                },
                {
                  "jsonSchema": {
                    "type": "object",
                    "additionalProperties": {
                      "type": "string"
                    }
                  },
                  "nullable": false,
                  "handle": "headers"
                },
                {
                  "jsonSchema": {
                    "type": "object",
                    "additionalProperties": true
                  },
                  "nullable": true,
                  "handle": "previousState"
                }
              ],
              "outputs": [
                {
                  "jsonSchema": {
                    "type": "object",
                    "additionalProperties": true
                  },
                  "nullable": false,
                  "handle": "state"
                },
                {
                  "jsonSchema": {
                    "type": "string"
                  },
                  "nullable": false,
                  "handle": "phase"
                }
              ],
              "name": "Evaluate the HTTP response",
              "moduleId": "n_95feb37df67231f1",
              "capabilities": [
                {
                  "kind": "connector",
                  "mode": "independent",
                  "actions": []
                }
              ]
            }
          },
          "n_47771c576b4f143d": {
            "inputs": {},
            "name": "Follow or alert?",
            "kind": "condition",
            "matchMode": "first",
            "cases": [
              {
                "output": "follow",
                "groups": [
                  {
                    "expressions": [
                      {
                        "left": {
                          "kind": "source",
                          "source": {
                            "kind": "node",
                            "nodeId": "n_c57969bfdaea1539",
                            "output": "phase"
                          }
                        },
                        "operator": "==",
                        "right": {
                          "kind": "value",
                          "value": "follow"
                        }
                      }
                    ]
                  }
                ]
              },
              {
                "output": "send",
                "groups": [
                  {
                    "expressions": [
                      {
                        "left": {
                          "kind": "source",
                          "source": {
                            "kind": "node",
                            "nodeId": "n_c57969bfdaea1539",
                            "output": "phase"
                          }
                        },
                        "operator": "==",
                        "right": {
                          "kind": "value",
                          "value": "send"
                        }
                      }
                    ]
                  }
                ]
              }
            ]
          },
          "n_f3098476f62add18": {
            "inputs": {
              "to": {
                "kind": "value",
                "value": "YOUR_RECIPIENT_NUMBER"
              },
              "from": {
                "kind": "value",
                "value": "YOUR_TWILIO_NUMBER"
              },
              "body": {
                "kind": "value",
                "value": "Service Down"
              }
            },
            "name": "Send the SMS alert",
            "kind": "task",
            "task": {
              "inputs": [
                {
                  "description": "The destination phone number in E.164 format.",
                  "jsonSchema": {
                    "type": "string",
                    "description": "The destination phone number in E.164 format."
                  },
                  "nullable": false,
                  "handle": "to"
                },
                {
                  "description": "The Twilio phone number sending the message.",
                  "jsonSchema": {
                    "type": "string",
                    "description": "The Twilio phone number sending the message."
                  },
                  "nullable": false,
                  "handle": "from"
                },
                {
                  "description": "The text body of the outbound message.",
                  "jsonSchema": {
                    "type": "string",
                    "description": "The text body of the outbound message."
                  },
                  "nullable": false,
                  "handle": "body"
                }
              ],
              "outputs": [
                {
                  "description": "The Twilio message SID.",
                  "jsonSchema": {
                    "type": "string",
                    "description": "The Twilio message SID."
                  },
                  "nullable": false,
                  "handle": "messageSid"
                },
                {
                  "description": "The Twilio account SID that owns the message.",
                  "jsonSchema": {
                    "type": [
                      "string",
                      "null"
                    ],
                    "description": "The Twilio account SID that owns the message."
                  },
                  "nullable": true,
                  "handle": "accountSid"
                },
                {
                  "description": "The delivery status of the message.",
                  "jsonSchema": {
                    "type": [
                      "string",
                      "null"
                    ],
                    "description": "The delivery status of the message."
                  },
                  "nullable": true,
                  "handle": "status"
                },
                {
                  "description": "The destination phone number.",
                  "jsonSchema": {
                    "type": [
                      "string",
                      "null"
                    ],
                    "description": "The destination phone number."
                  },
                  "nullable": true,
                  "handle": "to"
                },
                {
                  "description": "The sender phone number.",
                  "jsonSchema": {
                    "type": [
                      "string",
                      "null"
                    ],
                    "description": "The sender phone number."
                  },
                  "nullable": true,
                  "handle": "from"
                },
                {
                  "description": "The text body of the message.",
                  "jsonSchema": {
                    "type": [
                      "string",
                      "null"
                    ],
                    "description": "The text body of the message."
                  },
                  "nullable": true,
                  "handle": "body"
                }
              ],
              "name": "Send the SMS alert",
              "executor": {
                "kind": "connector",
                "action": "twilio.send_message"
              }
            }
          }
        },
        "edges": [
          {
            "source": "n_23bf965089a628ca",
            "target": "n_a004452aea747d4b"
          },
          {
            "source": "n_a004452aea747d4b",
            "target": "n_c43d1d794093d8ed"
          },
          {
            "source": "n_c43d1d794093d8ed",
            "target": "n_c57969bfdaea1539"
          },
          {
            "source": "n_c57969bfdaea1539",
            "target": "n_47771c576b4f143d"
          },
          {
            "source": "n_47771c576b4f143d",
            "target": "n_a004452aea747d4b",
            "sourceHandle": "follow"
          },
          {
            "source": "n_47771c576b4f143d",
            "target": "n_f3098476f62add18",
            "sourceHandle": "send"
          }
        ]
      }
    },
    "modules": {
      "n_7e9d20ced39ab10d": {
        "name": "Prepare the HTTP target",
        "imports": [],
        "source": "export default function hop({initialUrl,previousState}) {const candidate=previousState?.nextUrl||initialUrl;let url;try{url=new URL(candidate)}catch{throw Error('Configure a valid HTTP or HTTPS target URL')}if(!['http:','https:'].includes(url.protocol)||url.username||url.password)throw Error('Configure an HTTP or HTTPS URL without credentials');return{url:url.toString()};}\n"
      },
      "n_95feb37df67231f1": {
        "name": "Evaluate the HTTP response",
        "imports": [],
        "source": "export default function status({url,statusCode,headers,previousState}){if(!Number.isInteger(statusCode)||statusCode<100||statusCode>599)throw Error('Invalid HTTP status');const hops=previousState?.hops??0;if(!Number.isInteger(hops)||hops<0)throw Error('Invalid redirect state');if(statusCode>=300&&statusCode<400&&typeof headers?.location==='string'&&headers.location){if(hops>=21)throw Error('Too many redirects');let target;try{target=new URL(headers.location,url)}catch{throw Error('Invalid redirect URL')}if(!['http:','https:'].includes(target.protocol)||target.username||target.password)throw Error('Invalid redirect URL');return{state:{hops:hops+1,nextUrl:target.toString()},phase:'follow'};}return{state:{hops,nextUrl:''},phase:statusCode!==200?'send':'ok'};}\n"
      }
    }
  },
  "presentation": {
    "designer": {
      "version": 1,
      "flow": {
        "direction": "vertical"
      }
    }
  }
}