Security

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Calls

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insert_parachain_error

Insert a new parachain error.

# Arguments

• origin - the dispatch origin of this call (must be Root)
• error_code - the error code to insert

# Weight: O(1)

Attributes

Name	Type
error_code	ErrorCode

Python

call = substrate.compose_call(
    'Security', 'insert_parachain_error', {
    'error_code': (
        'None',
        'OracleOffline',
    ),
}
)

---

remove_parachain_error

Remove a parachain error.

# Arguments

• origin - the dispatch origin of this call (must be Root)
• error_code - the error code to remove

# Weight: O(1)

Attributes

Name	Type
error_code	ErrorCode

Python

call = substrate.compose_call(
    'Security', 'remove_parachain_error', {
    'error_code': (
        'None',
        'OracleOffline',
    ),
}
)

---

set_parachain_status

Set the parachain status code.

# Arguments

• origin - the dispatch origin of this call (must be Root)
• status_code - the status code to set

# Weight: O(1)

Attributes

Name	Type
status_code	StatusCode

Python

call = substrate.compose_call(
    'Security', 'set_parachain_status', {
    'status_code': (
        'Running',
        'Error',
        'Shutdown',
    ),
}
)

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Events

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RecoverFromErrors

Attributes

Name	Type	Composition
new_status	StatusCode	('Running', 'Error', 'Shutdown')
cleared_errors	Vec<ErrorCode>	[('None', 'OracleOffline')]

---

UpdateActiveBlock

Attributes

Name	Type	Composition
block_number	T::BlockNumber	u32

---

Storage functions

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ActiveBlockCount

Like frame_system::block_number, but this one only increments if the parachain status is RUNNING. This variable is used to keep track of durations, such as the issue/redeem/replace expiry. If the parachain is not RUNNING, no payment proofs can be submitted, and it wouldn't be fair to punish the user/vault. By using this variable we ensure that they have sufficient time to submit their proof.

Python

result = substrate.query(
    'Security', 'ActiveBlockCount', []
)

Return value

'u32'

---

Errors

Set of ErrorCodes, indicating the reason for an "Error" ParachainStatus.

Python

result = substrate.query(
    'Security', 'Errors', []
)

Return value

'scale_info::576'

---

Nonce

Integer increment-only counter, used to prevent collisions when generating identifiers for e.g. issue, redeem or replace requests.

Python

result = substrate.query(
    'Security', 'Nonce', []
)

Return value

'scale_info::551'

---

ParachainStatus

Integer/Enum defining the current state of the Spacewalk-Parachain.

Python

result = substrate.query(
    'Security', 'ParachainStatus', []
)

Return value

('Running', 'Error', 'Shutdown')

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Errors

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ParachainNotRunning

Parachain is not running.

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