{
  "format": 1,
  "seat": "git",
  "scope": "mesh",
  "grain": "whole",
  "domain": "Delivery",
  "decision": "novox/hq ADR 0111",
  "description": "The forge: every read and act a delivery part makes of the mesh's git repositories, and what the forge says happened (design 47 *The seat git*, ADR 0596 \u00a71, \u00a72). A failed read answers an error, never an empty answer. The act verbs are the forge bridge's alone.",
  "delivers": "git",
  "verbs": [
    {
      "name": "pull",
      "description": "One pull request, by its repository and number or by its merge commit: its number, base, head branch, head, merge commit, author and state; for an open one, also what the forge would merge now (merging). A pull request the forge does not hold answers an error naming it.",
      "input": {
        "type": "object",
        "properties": {
          "repository": {
            "type": "string",
            "description": "the repository, <owner>/<name>",
            "minLength": 1
          },
          "number": {
            "type": "integer",
            "description": "its number"
          },
          "merge-commit": {
            "type": "string",
            "description": "instead of the number: the merge commit it made"
          }
        },
        "additionalProperties": false,
        "required": [
          "repository"
        ]
      },
      "answer": {
        "type": "object",
        "properties": {
          "pull": {
            "$ref": "#/defs/Pull"
          },
          "merging": {
            "$ref": "#/defs/Merging"
          },
          "error": {
            "type": "string",
            "description": "why the forge could not answer, or refused: set alone with error-kind, and a caller reads it as a failure, never as none"
          },
          "error-kind": {
            "$ref": "#/defs/ErrorKind"
          }
        },
        "description": "what pull answers; error and error-kind alone when it fails"
      },
      "callers": [
        "invokers"
      ],
      "class": "read"
    },
    {
      "name": "branch",
      "description": "A branch's head, and whether a protection rule refuses a direct push and admits only merges (design 47 *The seat git*, *Watched branches and the catalog graph per branch*). A branch the forge does not hold answers the error kind not-found.",
      "input": {
        "type": "object",
        "properties": {
          "repository": {
            "type": "string",
            "description": "the repository, <owner>/<name>",
            "minLength": 1
          },
          "branch": {
            "type": "string",
            "minLength": 1
          }
        },
        "additionalProperties": false,
        "required": [
          "repository",
          "branch"
        ]
      },
      "answer": {
        "type": "object",
        "properties": {
          "repository": {
            "type": "string"
          },
          "branch": {
            "type": "string"
          },
          "head": {
            "type": "string",
            "description": "a commit, its full 40-hex sha",
            "pattern": "^[0-9a-f]{40}$"
          },
          "protected": {
            "type": "boolean",
            "description": "a protection rule refuses a direct push and admits only merges"
          },
          "error": {
            "type": "string",
            "description": "why the forge could not answer, or refused: set alone with error-kind, and a caller reads it as a failure, never as none"
          },
          "error-kind": {
            "$ref": "#/defs/ErrorKind"
          }
        },
        "description": "what branch answers; error and error-kind alone when it fails"
      },
      "callers": [
        "invokers"
      ],
      "class": "read"
    },
    {
      "name": "open-pulls",
      "description": "Every open pull request of every repository, its head and base, the statuses its base's protection requires and those its head has.",
      "input": {
        "type": "object",
        "properties": {},
        "additionalProperties": false
      },
      "answer": {
        "type": "object",
        "properties": {
          "pulls": {
            "type": "array",
            "items": {
              "$ref": "#/defs/OpenPull"
            },
            "description": "every open pull request; said empty when none is open, so an answer that lacks it is never read as none"
          },
          "error": {
            "type": "string",
            "description": "why the forge could not answer, or refused: set alone with error-kind, and a caller reads it as a failure, never as none"
          },
          "error-kind": {
            "$ref": "#/defs/ErrorKind"
          }
        },
        "description": "what open-pulls answers; pulls always said, empty when none is open; error and error-kind beside an empty pulls when it fails",
        "required": [
          "pulls"
        ]
      },
      "callers": [
        "invokers"
      ],
      "class": "read"
    },
    {
      "name": "tags",
      "description": "A repository's tags, a page at a time, newest first; the page's bound is said, and more when another page exists.",
      "input": {
        "type": "object",
        "properties": {
          "repository": {
            "type": "string",
            "description": "the repository, <owner>/<name>",
            "minLength": 1
          },
          "prefix": {
            "type": "string",
            "description": "only tags starting with it"
          },
          "page": {
            "type": "integer",
            "description": "the page, from 1"
          }
        },
        "additionalProperties": false,
        "required": [
          "repository"
        ]
      },
      "answer": {
        "type": "object",
        "properties": {
          "repository": {
            "type": "string",
            "description": "the repository, <owner>/<name>",
            "minLength": 1
          },
          "tags": {
            "type": "array",
            "items": {
              "type": "string"
            },
            "description": "the tags of this page"
          },
          "page": {
            "type": "integer",
            "description": "the page"
          },
          "bound": {
            "type": "integer",
            "description": "how many tags a page holds"
          },
          "more": {
            "type": "boolean",
            "description": "another page exists"
          },
          "error": {
            "type": "string",
            "description": "why the forge could not answer, or refused: set alone with error-kind, and a caller reads it as a failure, never as none"
          },
          "error-kind": {
            "$ref": "#/defs/ErrorKind"
          }
        },
        "description": "what tags answers; error and error-kind alone when it fails"
      },
      "callers": [
        "invokers"
      ],
      "class": "read"
    },
    {
      "name": "trees",
      "description": "The trees of one commit: the root tree and the tree of every directory that holds a module.json, by their git hashes; with files, every blob under each named directory; with paths, the object of each named path. A listing the forge cut is refused, never answered in part.",
      "input": {
        "type": "object",
        "properties": {
          "repository": {
            "type": "string",
            "description": "the repository, <owner>/<name>",
            "minLength": 1
          },
          "commit": {
            "type": "string",
            "description": "a commit, its full 40-hex sha",
            "pattern": "^[0-9a-f]{40}$"
          },
          "paths": {
            "type": "object",
            "additionalProperties": {
              "type": "array",
              "items": {
                "type": "string"
              }
            },
            "description": "{directory: [path relative to it]}; the root is the empty name"
          },
          "files": {
            "type": "array",
            "items": {
              "type": "string"
            },
            "description": "directories whose every blob is answered; the root is the empty name"
          }
        },
        "additionalProperties": false,
        "required": [
          "repository",
          "commit"
        ]
      },
      "answer": {
        "type": "object",
        "properties": {
          "commit": {
            "type": "string",
            "description": "a commit, its full 40-hex sha",
            "pattern": "^[0-9a-f]{40}$"
          },
          "root": {
            "type": "string",
            "description": "the root tree's hash"
          },
          "trees": {
            "type": "object",
            "additionalProperties": {
              "type": "string"
            },
            "description": "directory to its tree's hash, the root as the empty name"
          },
          "files": {
            "type": "object",
            "additionalProperties": {
              "type": "object",
              "additionalProperties": {
                "type": "string"
              }
            },
            "description": "directory to {path: blob id}"
          },
          "paths": {
            "type": "object",
            "additionalProperties": {
              "type": "object",
              "additionalProperties": {
                "type": "string"
              }
            },
            "description": "directory to {path: object id}"
          },
          "error": {
            "type": "string",
            "description": "why the forge could not answer, or refused: set alone with error-kind, and a caller reads it as a failure, never as none"
          },
          "error-kind": {
            "$ref": "#/defs/ErrorKind"
          }
        },
        "description": "what trees answers; error and error-kind alone when it fails"
      },
      "callers": [
        "invokers"
      ],
      "class": "read"
    },
    {
      "name": "file",
      "description": "One file at one commit, branch or tag, decoded; a file over 512 KiB is refused. An absent file is answered absent only when the forge said so.",
      "input": {
        "type": "object",
        "properties": {
          "repository": {
            "type": "string",
            "description": "the repository, <owner>/<name>",
            "minLength": 1
          },
          "path": {
            "type": "string",
            "description": "the file's path from the repository's root",
            "minLength": 1
          },
          "ref": {
            "type": "string",
            "description": "a commit, branch or tag; the default branch when absent"
          }
        },
        "additionalProperties": false,
        "required": [
          "repository",
          "path"
        ]
      },
      "answer": {
        "type": "object",
        "properties": {
          "path": {
            "type": "string",
            "description": "the path"
          },
          "ref": {
            "type": "string",
            "description": "what was read"
          },
          "blob": {
            "type": "string",
            "description": "the file's git blob id"
          },
          "size": {
            "type": "integer",
            "description": "its size in bytes"
          },
          "content": {
            "type": "string",
            "description": "its content"
          },
          "absent": {
            "type": "boolean",
            "description": "the forge holds no such file there"
          },
          "error": {
            "type": "string",
            "description": "why the forge could not answer, or refused: set alone with error-kind, and a caller reads it as a failure, never as none"
          },
          "error-kind": {
            "$ref": "#/defs/ErrorKind"
          }
        },
        "description": "what file answers; error and error-kind alone when it fails"
      },
      "callers": [
        "invokers"
      ],
      "class": "read"
    },
    {
      "name": "contains",
      "description": "Whether one commit contains another: an ancestor of it, or the same.",
      "input": {
        "type": "object",
        "properties": {
          "repository": {
            "type": "string",
            "description": "the repository, <owner>/<name>",
            "minLength": 1
          },
          "commit": {
            "type": "string",
            "description": "the commit asked about",
            "minLength": 1
          },
          "in": {
            "type": "string",
            "description": "the commit it may be contained in",
            "minLength": 1
          }
        },
        "additionalProperties": false,
        "required": [
          "repository",
          "commit",
          "in"
        ]
      },
      "answer": {
        "type": "object",
        "properties": {
          "commit": {
            "type": "string",
            "description": "the commit"
          },
          "in": {
            "type": "string",
            "description": "the other"
          },
          "contains": {
            "type": "boolean",
            "description": "in contains commit"
          },
          "ahead": {
            "type": "integer",
            "description": "how many commits commit is ahead of in"
          },
          "error": {
            "type": "string",
            "description": "why the forge could not answer, or refused: set alone with error-kind, and a caller reads it as a failure, never as none"
          },
          "error-kind": {
            "$ref": "#/defs/ErrorKind"
          }
        },
        "description": "what contains answers; error and error-kind alone when it fails"
      },
      "callers": [
        "invokers"
      ],
      "class": "read"
    },
    {
      "name": "statuses",
      "description": "The statuses a commit carries, the newest of each context.",
      "input": {
        "type": "object",
        "properties": {
          "repository": {
            "type": "string",
            "description": "the repository, <owner>/<name>",
            "minLength": 1
          },
          "commit": {
            "type": "string",
            "description": "a commit, its full 40-hex sha",
            "pattern": "^[0-9a-f]{40}$"
          }
        },
        "additionalProperties": false,
        "required": [
          "repository",
          "commit"
        ]
      },
      "answer": {
        "type": "object",
        "properties": {
          "commit": {
            "type": "string",
            "description": "a commit, its full 40-hex sha",
            "pattern": "^[0-9a-f]{40}$"
          },
          "combined": {
            "type": "string",
            "description": "the forge's combined state"
          },
          "statuses": {
            "type": "array",
            "items": {
              "$ref": "#/defs/Status"
            },
            "description": "the newest of each context"
          },
          "error": {
            "type": "string",
            "description": "why the forge could not answer, or refused: set alone with error-kind, and a caller reads it as a failure, never as none"
          },
          "error-kind": {
            "$ref": "#/defs/ErrorKind"
          }
        },
        "description": "what statuses answers; error and error-kind alone when it fails"
      },
      "callers": [
        "invokers"
      ],
      "class": "read"
    },
    {
      "name": "status",
      "description": "Set a commit status. An act: its id is the caller's, and the same id said again sets it again to the same.",
      "input": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string",
            "description": "the act's id",
            "minLength": 1
          },
          "repository": {
            "type": "string",
            "description": "the repository, <owner>/<name>",
            "minLength": 1
          },
          "commit": {
            "type": "string",
            "description": "a commit, its full 40-hex sha",
            "pattern": "^[0-9a-f]{40}$"
          },
          "context": {
            "type": "string",
            "description": "the context, such as mesh/check",
            "minLength": 1
          },
          "state": {
            "type": "string",
            "description": "the state",
            "enum": [
              "pending",
              "success",
              "failure",
              "error",
              "warning"
            ]
          },
          "description": {
            "type": "string",
            "description": "what it says"
          },
          "target": {
            "type": "string",
            "description": "the page it links to"
          }
        },
        "additionalProperties": false,
        "required": [
          "id",
          "repository",
          "commit",
          "context",
          "state"
        ]
      },
      "answer": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string",
            "description": "the act's id, as the caller gave it"
          },
          "performed": {
            "type": "boolean",
            "description": "the forge holds the act now"
          },
          "held": {
            "type": "boolean",
            "description": "the id was already held on the pull request or the note, so nothing was done again"
          },
          "error": {
            "type": "string",
            "description": "why the forge could not answer, or refused: set alone with error-kind, and a caller reads it as a failure, never as none"
          },
          "error-kind": {
            "$ref": "#/defs/ErrorKind"
          }
        },
        "description": "what status answers; error and error-kind alone when it fails"
      },
      "callers": [
        "module:mesh-delivery-forge-bridge"
      ],
      "class": "act"
    },
    {
      "name": "comment",
      "description": "Add a comment to a pull request. The comment carries the act's id, and an id the pull request already holds is skipped (held).",
      "input": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string",
            "description": "the act's id",
            "minLength": 1
          },
          "repository": {
            "type": "string",
            "description": "the repository, <owner>/<name>",
            "minLength": 1
          },
          "number": {
            "type": "integer",
            "description": "the pull request's number"
          },
          "text": {
            "type": "string",
            "description": "the comment, markdown",
            "minLength": 1
          }
        },
        "additionalProperties": false,
        "required": [
          "id",
          "repository",
          "number",
          "text"
        ]
      },
      "answer": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string",
            "description": "the act's id, as the caller gave it"
          },
          "performed": {
            "type": "boolean",
            "description": "the forge holds the act now"
          },
          "held": {
            "type": "boolean",
            "description": "the id was already held on the pull request or the note, so nothing was done again"
          },
          "error": {
            "type": "string",
            "description": "why the forge could not answer, or refused: set alone with error-kind, and a caller reads it as a failure, never as none"
          },
          "error-kind": {
            "$ref": "#/defs/ErrorKind"
          }
        },
        "description": "what comment answers; error and error-kind alone when it fails"
      },
      "callers": [
        "module:mesh-delivery-forge-bridge"
      ],
      "class": "act"
    },
    {
      "name": "view",
      "description": "Keep the delivery's one view comment on a pull request: made the first time, edited in place after; it carries the act's id, and an id already held is skipped (held).",
      "input": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string",
            "description": "the act's id",
            "minLength": 1
          },
          "repository": {
            "type": "string",
            "description": "the repository, <owner>/<name>",
            "minLength": 1
          },
          "number": {
            "type": "integer",
            "description": "the pull request's number"
          },
          "text": {
            "type": "string",
            "description": "the view, markdown",
            "minLength": 1
          }
        },
        "additionalProperties": false,
        "required": [
          "id",
          "repository",
          "number",
          "text"
        ]
      },
      "answer": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string",
            "description": "the act's id, as the caller gave it"
          },
          "performed": {
            "type": "boolean",
            "description": "the forge holds the act now"
          },
          "held": {
            "type": "boolean",
            "description": "the id was already held on the pull request or the note, so nothing was done again"
          },
          "error": {
            "type": "string",
            "description": "why the forge could not answer, or refused: set alone with error-kind, and a caller reads it as a failure, never as none"
          },
          "error-kind": {
            "$ref": "#/defs/ErrorKind"
          }
        },
        "description": "what view answers; error and error-kind alone when it fails"
      },
      "callers": [
        "module:mesh-delivery-forge-bridge"
      ],
      "class": "act"
    },
    {
      "name": "note",
      "description": "Append one line to a commit's note under refs/notes/mesh-plan. The line carries the act's id, and an id the note already holds is skipped (held).",
      "input": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string",
            "description": "the act's id",
            "minLength": 1
          },
          "repository": {
            "type": "string",
            "description": "the repository, <owner>/<name>",
            "minLength": 1
          },
          "commit": {
            "type": "string",
            "description": "a commit, its full 40-hex sha",
            "pattern": "^[0-9a-f]{40}$"
          },
          "line": {
            "type": "string",
            "description": "the line, one line",
            "minLength": 1
          }
        },
        "additionalProperties": false,
        "required": [
          "id",
          "repository",
          "commit",
          "line"
        ]
      },
      "answer": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string",
            "description": "the act's id, as the caller gave it"
          },
          "performed": {
            "type": "boolean",
            "description": "the forge holds the act now"
          },
          "held": {
            "type": "boolean",
            "description": "the id was already held on the pull request or the note, so nothing was done again"
          },
          "error": {
            "type": "string",
            "description": "why the forge could not answer, or refused: set alone with error-kind, and a caller reads it as a failure, never as none"
          },
          "error-kind": {
            "$ref": "#/defs/ErrorKind"
          }
        },
        "description": "what note answers; error and error-kind alone when it fails"
      },
      "callers": [
        "module:mesh-delivery-forge-bridge"
      ],
      "class": "act"
    },
    {
      "name": "merge-pull",
      "description": "Merge a pull request with the forge tools' account at the head the caller names (design 47 *Approval is a step, and a session merges a pull request*). It judges that this is still the pull request's head and that the base branch's protection refuses a direct push, read again on every branch-moved, and refuses a head when any run at its build-input fingerprint failed a required step, judged from its own state failed-steps heard from the runner's step-ended, never by a call; a head with no run yet or a passed one merges, it never waits for a run and never asks an Approve (ADR 0666 section 11). Refused, naming why: a head that moved, a branch no protection guards, a failed required step (naming the run, the module and the step), no registrations yet (ADR 0667 section 10), a merge git refuses. A pull request already merged at that head is answered performed.",
      "input": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string",
            "description": "the act's id",
            "minLength": 1
          },
          "repository": {
            "type": "string",
            "description": "the repository, <owner>/<name>",
            "minLength": 1
          },
          "number": {
            "type": "integer",
            "description": "the pull request's number"
          },
          "head": {
            "type": "string",
            "description": "the head the caller names",
            "pattern": "^[0-9a-f]{40}$"
          }
        },
        "additionalProperties": false,
        "required": [
          "id",
          "repository",
          "number",
          "head"
        ]
      },
      "answer": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string",
            "description": "the act's id, as the caller gave it"
          },
          "performed": {
            "type": "boolean",
            "description": "the forge holds the act now"
          },
          "held": {
            "type": "boolean",
            "description": "the id was already held on the pull request or the note, so nothing was done again"
          },
          "merge-commit": {
            "type": "string",
            "description": "the merge commit"
          },
          "refused": {
            "type": "string",
            "description": "why the forge or the holder refused the merge; the act is not performed"
          },
          "refused-kind": {
            "type": "string",
            "enum": [
              "head-moved",
              "unprotected",
              "policy-failed",
              "no-registrations",
              "git-refused"
            ],
            "description": "which refusal, set with refused: head-moved, the pull request's head is not the one named; unprotected, the base branch's protection does not refuse a direct push; policy-failed, a run at the head's fingerprint failed a required step (run, module and step name it); no-registrations, no registration-changed heard yet (ADR 0667 section 10); git-refused, git refused the merge"
          },
          "run": {
            "type": "string",
            "description": "for policy-failed, the run that failed the step: the runner's pipeline key"
          },
          "module": {
            "type": "string",
            "description": "for policy-failed, the module"
          },
          "step": {
            "type": "string",
            "description": "for policy-failed, the step"
          },
          "error": {
            "type": "string",
            "description": "why the forge could not answer, or refused: set alone with error-kind, and a caller reads it as a failure, never as none"
          },
          "error-kind": {
            "$ref": "#/defs/ErrorKind"
          }
        },
        "description": "what merge-pull answers; error and error-kind alone when it fails"
      },
      "callers": [
        "persons",
        "sessions"
      ],
      "class": "act"
    },
    {
      "name": "tag",
      "class": "act",
      "callers": [
        "seat:mesh-builds"
      ],
      "description": "Write the git tag of a released version, go/vMAJOR.MINOR.PATCH, at the commit its build was made from; the builder writes it only on the catalog's version-released (design 47 G section 370). A tag already at that commit is answered performed. An error answer carries error and error-kind.",
      "input": {
        "type": "object",
        "properties": {
          "repository": {
            "type": "string",
            "description": "the repository, <owner>/<name>"
          },
          "tag": {
            "type": "string",
            "description": "the tag"
          },
          "commit": {
            "type": "string",
            "description": "the commit it is written at"
          }
        },
        "additionalProperties": false,
        "required": [
          "repository",
          "tag",
          "commit"
        ]
      },
      "answer": {
        "type": "object",
        "properties": {
          "tag": {
            "type": "string",
            "description": "the tag, as asked"
          },
          "performed": {
            "type": "boolean",
            "description": "the forge holds the tag at that commit now"
          },
          "error": {
            "type": "string",
            "description": "why the forge could not write it: set alone with error-kind"
          },
          "error-kind": {
            "$ref": "#/defs/ErrorKind"
          }
        },
        "description": "what tag answers; error and error-kind alone when it fails"
      }
    }
  ],
  "events": [
    {
      "name": "pull-updated",
      "body": {
        "type": "object",
        "properties": {
          "repository": {
            "type": "string",
            "description": "the repository, <owner>/<name>",
            "minLength": 1
          },
          "number": {
            "type": "integer",
            "description": "the pull request's number"
          },
          "branch": {
            "type": "string",
            "description": "its head branch"
          },
          "head": {
            "type": "string",
            "description": "a commit, its full 40-hex sha",
            "pattern": "^[0-9a-f]{40}$"
          },
          "base": {
            "type": "string",
            "description": "the branch it merges into"
          },
          "title": {
            "type": "string",
            "description": "its title"
          },
          "author": {
            "type": "string",
            "description": "who opened it"
          },
          "url": {
            "type": "string",
            "description": "its page"
          },
          "base-head": {
            "type": "string",
            "description": "the base branch's head as the head was announced; absent when it could not be read"
          },
          "change": {
            "$ref": "#/defs/Change"
          }
        },
        "description": "a pull request's new head, announced once per head and trunk commit",
        "required": [
          "repository",
          "number",
          "branch",
          "head",
          "base"
        ]
      }
    },
    {
      "name": "pull-merged",
      "body": {
        "type": "object",
        "properties": {
          "repository": {
            "type": "string",
            "description": "the repository, <owner>/<name>",
            "minLength": 1
          },
          "number": {
            "type": "integer",
            "description": "the pull request's number"
          },
          "branch": {
            "type": "string",
            "description": "its head branch"
          },
          "head": {
            "type": "string",
            "description": "a commit, its full 40-hex sha",
            "pattern": "^[0-9a-f]{40}$"
          },
          "base": {
            "type": "string",
            "description": "the branch it merges into"
          },
          "title": {
            "type": "string",
            "description": "its title"
          },
          "author": {
            "type": "string",
            "description": "who opened it"
          },
          "url": {
            "type": "string",
            "description": "its page"
          },
          "merge-commit": {
            "type": "string",
            "description": "a commit, its full 40-hex sha",
            "pattern": "^[0-9a-f]{40}$"
          },
          "merged-at": {
            "type": "string",
            "description": "when",
            "format": "date-time"
          },
          "change": {
            "$ref": "#/defs/Change"
          },
          "head-checks": {
            "type": "object",
            "additionalProperties": {
              "type": "string"
            },
            "description": "the head's statuses by context, their states; absent when they could not be read"
          }
        },
        "description": "a pull request merged, announced once by its merge commit",
        "required": [
          "repository",
          "number",
          "branch",
          "head",
          "base",
          "merge-commit"
        ]
      }
    },
    {
      "name": "pull-closed",
      "body": {
        "type": "object",
        "properties": {
          "repository": {
            "type": "string",
            "description": "the repository, <owner>/<name>",
            "minLength": 1
          },
          "number": {
            "type": "integer",
            "description": "the pull request's number"
          },
          "branch": {
            "type": "string",
            "description": "its head branch"
          },
          "head": {
            "type": "string",
            "description": "a commit, its full 40-hex sha",
            "pattern": "^[0-9a-f]{40}$"
          },
          "base": {
            "type": "string",
            "description": "the branch it merges into"
          },
          "title": {
            "type": "string",
            "description": "its title"
          },
          "author": {
            "type": "string",
            "description": "who opened it"
          },
          "url": {
            "type": "string",
            "description": "its page"
          }
        },
        "description": "a pull request closed without a merge, announced once by its head",
        "required": [
          "repository",
          "number",
          "branch",
          "head",
          "base"
        ]
      }
    },
    {
      "name": "forge-pull",
      "body": {
        "type": "object",
        "properties": {
          "action": {
            "type": "string",
            "description": "what the forge said: opened, reopened, synchronized, edited, closed, merged"
          },
          "repository": {
            "type": "string",
            "description": "the repository, <owner>/<name>",
            "minLength": 1
          },
          "number": {
            "type": "integer",
            "description": "its number"
          },
          "branch": {
            "type": "string",
            "description": "its head branch"
          },
          "head": {
            "type": "string",
            "description": "its head commit"
          },
          "base": {
            "type": "string",
            "description": "its base branch"
          },
          "author": {
            "type": "string",
            "description": "who opened it"
          },
          "merged": {
            "type": "boolean",
            "description": "merged"
          },
          "merge-commit": {
            "type": "string",
            "description": "the merge commit"
          },
          "sender": {
            "type": "string",
            "description": "who acted"
          }
        },
        "description": "the forge's own webhook of a pull request, trimmed; never its description",
        "required": [
          "action",
          "repository",
          "number"
        ]
      }
    },
    {
      "name": "forge-status",
      "body": {
        "type": "object",
        "properties": {
          "repository": {
            "type": "string",
            "description": "the repository, <owner>/<name>",
            "minLength": 1
          },
          "commit": {
            "type": "string",
            "description": "the commit"
          },
          "context": {
            "type": "string",
            "description": "the context"
          },
          "state": {
            "type": "string",
            "description": "the state"
          },
          "description": {
            "type": "string",
            "description": "what it says"
          },
          "sender": {
            "type": "string",
            "description": "who set it"
          }
        },
        "description": "the forge's own webhook of a commit status",
        "required": [
          "repository",
          "commit",
          "context",
          "state"
        ]
      }
    },
    {
      "name": "forge-delete",
      "body": {
        "type": "object",
        "properties": {
          "repository": {
            "type": "string",
            "description": "the repository, <owner>/<name>",
            "minLength": 1
          },
          "ref": {
            "type": "string",
            "description": "the deleted branch or tag"
          },
          "ref-type": {
            "type": "string",
            "description": "branch or tag"
          },
          "sender": {
            "type": "string",
            "description": "who deleted it"
          }
        },
        "description": "the forge's own webhook of a deleted branch or tag",
        "required": [
          "repository",
          "ref"
        ]
      }
    },
    {
      "name": "repo-writable",
      "body": {
        "type": "object",
        "properties": {
          "repository": {
            "type": "string",
            "description": "the repository, <owner>/<name>",
            "minLength": 1
          },
          "account": {
            "type": "string",
            "description": "the account that writes it now"
          }
        },
        "description": "a repository the forge's account can write again",
        "required": [
          "repository",
          "account"
        ]
      }
    },
    {
      "name": "branch-moved",
      "body": {
        "type": "object",
        "description": "a branch's new head, by a merge or an admitted push, from the forge's push webhook (design 47 lines 507-512): its hearer takes the head from the forge's own record by the verb branch, never from this body",
        "properties": {
          "repository": {
            "type": "string",
            "description": "the repository, <owner>/<name>",
            "minLength": 1
          },
          "branch": {
            "type": "string",
            "minLength": 1
          },
          "head": {
            "type": "string",
            "description": "the head the webhook said, a commit's full 40-hex sha; read again by branch",
            "pattern": "^[0-9a-f]{40}$"
          },
          "at": {
            "type": "string",
            "format": "date-time"
          }
        },
        "required": [
          "repository",
          "branch"
        ]
      },
      "keep": {
        "max-age-days": 90,
        "max-mib": 64
      }
    }
  ],
  "family": {
    "name": "git.events",
    "max-age-days": 7
  },
  "states": [
    {
      "name": "failed-steps",
      "template": "state",
      "history": 1,
      "description": "each failed required step by module and build-input fingerprint, heard from the runner's step-ended; an entry is deleted once none of its commits is a watched branch's head or the head an open pull request names (design 47 *The runner's kept data*)",
      "key-forms": [
        {
          "key": "<module>.<fingerprint>.<step>",
          "value": {
            "$ref": "#/defs/FailedStep"
          },
          "description": "a failed required step"
        }
      ]
    }
  ],
  "defs": {
    "Pull": {
      "type": "object",
      "properties": {
        "repository": {
          "type": "string",
          "description": "the repository, <owner>/<name>",
          "minLength": 1
        },
        "number": {
          "type": "integer",
          "description": "the pull request's number"
        },
        "title": {
          "type": "string",
          "description": "its title"
        },
        "author": {
          "type": "string",
          "description": "who opened it, the forge's login"
        },
        "branch": {
          "type": "string",
          "description": "its head branch: what a delivery group is named by"
        },
        "head": {
          "type": "string",
          "description": "a commit, its full 40-hex sha",
          "pattern": "^[0-9a-f]{40}$"
        },
        "base": {
          "type": "string",
          "description": "the branch it merges into"
        },
        "state": {
          "type": "string",
          "description": "open, merged or closed",
          "enum": [
            "open",
            "merged",
            "closed"
          ]
        },
        "merge-commit": {
          "type": "string",
          "description": "the merge commit, once merged"
        },
        "merged-at": {
          "type": "string",
          "description": "when it merged",
          "format": "date-time"
        },
        "url": {
          "type": "string",
          "description": "its page on the forge"
        }
      },
      "description": "one pull request as the forge holds it; never its description (ADR 0659 \u00a71)",
      "required": [
        "repository",
        "number",
        "branch",
        "head",
        "base",
        "state"
      ]
    },
    "Merging": {
      "type": "object",
      "properties": {
        "mergeable": {
          "type": "boolean",
          "description": "the forge's own word on whether it merges into its base now: false while it is in conflict with its base, or while the forge works that out after the base moved"
        },
        "protected": {
          "type": "boolean",
          "description": "whether a protection rule guards its base branch"
        },
        "required": {
          "type": "array",
          "items": {
            "type": "string"
          },
          "description": "the status contexts the base branch's protection requires; none when it requires none"
        },
        "writes": {
          "type": "boolean",
          "description": "whether the forge's merging account may write the repository: false, its statuses and its merge are refused"
        }
      },
      "description": "what the forge would merge now, for an open pull request (issues 1275, 1945; ADR 0441 \u00a71): answered whole or not at all, and a read the forge could not make answers the verb's error, never a guess; absent for a merged or closed one",
      "required": [
        "mergeable",
        "protected",
        "required",
        "writes"
      ]
    },
    "Status": {
      "type": "object",
      "properties": {
        "context": {
          "type": "string",
          "description": "the status's context, such as mesh/check"
        },
        "state": {
          "type": "string",
          "description": "pending, success, failure, error or warning"
        },
        "description": {
          "type": "string",
          "description": "what it says"
        },
        "target": {
          "type": "string",
          "description": "the page it links to"
        },
        "at": {
          "type": "string",
          "description": "when it was set",
          "format": "date-time"
        },
        "by": {
          "type": "string",
          "description": "who set it"
        }
      },
      "description": "the newest status of one context on a commit",
      "required": [
        "context",
        "state"
      ]
    },
    "OpenPull": {
      "type": "object",
      "properties": {
        "pull": {
          "$ref": "#/defs/Pull"
        },
        "required": {
          "type": "array",
          "items": {
            "type": "string"
          },
          "description": "the contexts the base branch's protection requires; none when it requires none"
        },
        "checks": {
          "type": "object",
          "additionalProperties": {
            "$ref": "#/defs/Status"
          },
          "description": "the head's statuses by context, the newest of each"
        }
      },
      "description": "an open pull request, with the statuses its base requires and those its head has",
      "required": [
        "pull",
        "required",
        "checks"
      ]
    },
    "Change": {
      "type": "object",
      "properties": {
        "paths": {
          "type": "array",
          "items": {
            "type": "string"
          },
          "description": "the paths it changed"
        },
        "paths-truncated": {
          "type": "boolean",
          "description": "the forge cut the list"
        },
        "removed": {
          "type": "array",
          "items": {
            "type": "string"
          },
          "description": "which of them it deleted"
        },
        "module-dirs": {
          "type": "array",
          "items": {
            "type": "string"
          },
          "description": "the changed directories that hold a module at its head; absent when they could not be read"
        }
      },
      "description": "what a pull request changed",
      "required": [
        "paths"
      ]
    },
    "ErrorKind": {
      "type": "string",
      "enum": [
        "refused",
        "not-found",
        "failed"
      ],
      "description": "which kind of error, set with error alone: refused, the forge or the holder refused and error says why in the forge's own words; not-found, the forge said that what was asked about (a repository, a commit, a pull request, a branch or a tag) does not exist, so a caller never reads it out of error's words; failed, the forge failed or could not be reached, so the act or read could not be performed"
    },
    "FailedStep": {
      "type": "object",
      "description": "a failed required step at a build-input fingerprint, with the commits it was seen at and the run that failed it (design 47 *Judged from its own state, never by a call*); cleared by a later passing rerun of that step whose proved caller is the operator or a healer",
      "properties": {
        "v": {
          "type": "integer",
          "description": "the layout version"
        },
        "module": {
          "type": "string"
        },
        "fingerprint": {
          "type": "string",
          "description": "the build-input fingerprint the step failed at"
        },
        "step": {
          "type": "string"
        },
        "artifact": {
          "type": "string",
          "description": "the artifact reference, <module>:<artifact>"
        },
        "run": {
          "type": "string",
          "description": "the run that failed it: the runner's pipeline key"
        },
        "commits": {
          "type": "array",
          "items": {
            "type": "string",
            "description": "a commit, its full 40-hex sha",
            "pattern": "^[0-9a-f]{40}$"
          },
          "description": "every commit it was seen at"
        },
        "said": {
          "type": "string",
          "description": "why it failed, as the runner's step-ended said"
        },
        "at": {
          "type": "string",
          "format": "date-time"
        }
      },
      "required": [
        "module",
        "fingerprint",
        "step",
        "run",
        "commits"
      ]
    }
  }
}