{
  "version":"2.0",
  "metadata":{
    "apiVersion":"2019-11-02",
    "endpointPrefix":"ebs",
    "jsonVersion":"1.1",
    "protocol":"rest-json",
    "serviceAbbreviation":"Amazon EBS",
    "serviceFullName":"Amazon Elastic Block Store",
    "serviceId":"EBS",
    "signatureVersion":"v4",
    "uid":"ebs-2019-11-02"
  },
  "operations":{
    "GetSnapshotBlock":{
      "name":"GetSnapshotBlock",
      "http":{
        "method":"GET",
        "requestUri":"/snapshots/{snapshotId}/blocks/{blockIndex}"
      },
      "input":{"shape":"GetSnapshotBlockRequest"},
      "output":{"shape":"GetSnapshotBlockResponse"},
      "errors":[
        {"shape":"ValidationException"},
        {"shape":"ResourceNotFoundException"}
      ]
    },
    "ListChangedBlocks":{
      "name":"ListChangedBlocks",
      "http":{
        "method":"GET",
        "requestUri":"/snapshots/{secondSnapshotId}/changedblocks"
      },
      "input":{"shape":"ListChangedBlocksRequest"},
      "output":{"shape":"ListChangedBlocksResponse"},
      "errors":[
        {"shape":"ValidationException"},
        {"shape":"ResourceNotFoundException"}
      ]
    },
    "ListSnapshotBlocks":{
      "name":"ListSnapshotBlocks",
      "http":{
        "method":"GET",
        "requestUri":"/snapshots/{snapshotId}/blocks"
      },
      "input":{"shape":"ListSnapshotBlocksRequest"},
      "output":{"shape":"ListSnapshotBlocksResponse"},
      "errors":[
        {"shape":"ValidationException"},
        {"shape":"ResourceNotFoundException"}
      ]
    }
  },
  "shapes":{
    "Block":{
      "type":"structure",
      "members":{
        "BlockIndex":{"shape":"BlockIndex"},
        "BlockToken":{"shape":"BlockToken"}
      }
    },
    "BlockData":{
      "type":"blob",
      "sensitive":true,
      "streaming":true
    },
    "BlockIndex":{"type":"integer"},
    "BlockSize":{"type":"integer"},
    "BlockToken":{
      "type":"string",
      "max":256,
      "pattern":"^[A-Za-z0-9+/=]+$"
    },
    "Blocks":{
      "type":"list",
      "member":{"shape":"Block"},
      "sensitive":true
    },
    "ChangedBlock":{
      "type":"structure",
      "members":{
        "BlockIndex":{"shape":"BlockIndex"},
        "FirstBlockToken":{"shape":"BlockToken"},
        "SecondBlockToken":{"shape":"BlockToken"}
      },
      "sensitive":true
    },
    "ChangedBlocks":{
      "type":"list",
      "member":{"shape":"ChangedBlock"}
    },
    "Checksum":{
      "type":"string",
      "max":64
    },
    "ChecksumAlgorithm":{
      "type":"string",
      "enum":["SHA256"],
      "max":32
    },
    "DataLength":{"type":"integer"},
    "ErrorMessage":{
      "type":"string",
      "max":256
    },
    "GetSnapshotBlockRequest":{
      "type":"structure",
      "required":[
        "SnapshotId",
        "BlockIndex",
        "BlockToken"
      ],
      "members":{
        "SnapshotId":{
          "shape":"SnapshotId",
          "location":"uri",
          "locationName":"snapshotId"
        },
        "BlockIndex":{
          "shape":"BlockIndex",
          "location":"uri",
          "locationName":"blockIndex"
        },
        "BlockToken":{
          "shape":"BlockToken",
          "location":"querystring",
          "locationName":"blockToken"
        }
      }
    },
    "GetSnapshotBlockResponse":{
      "type":"structure",
      "members":{
        "DataLength":{
          "shape":"DataLength",
          "location":"header",
          "locationName":"x-amz-Data-Length"
        },
        "BlockData":{"shape":"BlockData"},
        "Checksum":{
          "shape":"Checksum",
          "location":"header",
          "locationName":"x-amz-Checksum"
        },
        "ChecksumAlgorithm":{
          "shape":"ChecksumAlgorithm",
          "location":"header",
          "locationName":"x-amz-Checksum-Algorithm"
        }
      },
      "payload":"BlockData"
    },
    "ListChangedBlocksRequest":{
      "type":"structure",
      "required":["SecondSnapshotId"],
      "members":{
        "FirstSnapshotId":{
          "shape":"SnapshotId",
          "location":"querystring",
          "locationName":"firstSnapshotId"
        },
        "SecondSnapshotId":{
          "shape":"SnapshotId",
          "location":"uri",
          "locationName":"secondSnapshotId"
        },
        "NextToken":{
          "shape":"PageToken",
          "location":"querystring",
          "locationName":"pageToken"
        },
        "MaxResults":{
          "shape":"MaxResults",
          "location":"querystring",
          "locationName":"maxResults"
        },
        "StartingBlockIndex":{
          "shape":"BlockIndex",
          "location":"querystring",
          "locationName":"startingBlockIndex"
        }
      }
    },
    "ListChangedBlocksResponse":{
      "type":"structure",
      "members":{
        "ChangedBlocks":{"shape":"ChangedBlocks"},
        "ExpiryTime":{"shape":"TimeStamp"},
        "VolumeSize":{"shape":"VolumeSize"},
        "BlockSize":{"shape":"BlockSize"},
        "NextToken":{"shape":"PageToken"}
      }
    },
    "ListSnapshotBlocksRequest":{
      "type":"structure",
      "required":["SnapshotId"],
      "members":{
        "SnapshotId":{
          "shape":"SnapshotId",
          "location":"uri",
          "locationName":"snapshotId"
        },
        "NextToken":{
          "shape":"PageToken",
          "location":"querystring",
          "locationName":"pageToken"
        },
        "MaxResults":{
          "shape":"MaxResults",
          "location":"querystring",
          "locationName":"maxResults"
        },
        "StartingBlockIndex":{
          "shape":"BlockIndex",
          "location":"querystring",
          "locationName":"startingBlockIndex"
        }
      }
    },
    "ListSnapshotBlocksResponse":{
      "type":"structure",
      "members":{
        "Blocks":{"shape":"Blocks"},
        "ExpiryTime":{"shape":"TimeStamp"},
        "VolumeSize":{"shape":"VolumeSize"},
        "BlockSize":{"shape":"BlockSize"},
        "NextToken":{"shape":"PageToken"}
      }
    },
    "MaxResults":{
      "type":"integer",
      "max":10000,
      "min":100
    },
    "PageToken":{
      "type":"string",
      "max":256,
      "pattern":"^[A-Za-z0-9+/=]+$"
    },
    "ResourceNotFoundException":{
      "type":"structure",
      "members":{
        "Message":{"shape":"ErrorMessage"}
      },
      "error":{"httpStatusCode":404},
      "exception":true
    },
    "SnapshotId":{
      "type":"string",
      "max":64,
      "min":1,
      "pattern":"^snap-[0-9a-f]+$"
    },
    "TimeStamp":{"type":"timestamp"},
    "ValidationException":{
      "type":"structure",
      "members":{
        "Message":{"shape":"ErrorMessage"},
        "Reason":{"shape":"ValidationExceptionReason"}
      },
      "error":{"httpStatusCode":400},
      "exception":true
    },
    "ValidationExceptionReason":{
      "type":"string",
      "enum":[
        "INVALID_CUSTOMER_KEY",
        "INVALID_PAGE_TOKEN",
        "INVALID_BLOCK_TOKEN",
        "INVALID_SNAPSHOT_ID",
        "UNRELATED_SNAPSHOTS"
      ]
    },
    "VolumeSize":{"type":"long"}
  }
}