lbry-sdk/lbry/error/README.md

Exceptions

Exceptions in LBRY are defined and generated from the Markdown table at the end of this README.

Guidelines

When possible, use built-in Python exceptions or aiohttp general client / HTTP exceptions, unless:

1. You want to provide a better error message (extend the closest built-in/aiohttp exception in this case).
2. You need to represent a new situation.

When defining your own exceptions, consider:

1. Extending a built-in Python or aiohttp exception.
2. Using contextual variables in the error message.

Table Column Definitions

Column	Meaning
Code	Codes are used only to define the hierarchy of exceptions and do not end up in the generated output, it is okay to re-number things as necessary at anytime to achieve the desired hierarchy.
Name	Becomes the class name of the exception with "Error" appended to the end. Changing names of existing exceptions makes the API backwards incompatible. When extending other exceptions you must specify the full class name, manually adding "Error" as necessary (if extending another SDK exception).
Message	User friendly error message explaining the exceptional event. Supports Python formatted strings: any variables used in the string will be generated as arguments in the __init__ method. Use -- to provide a doc string after the error message to be added to the class definition.

Exceptions Table

Code	Name	Message
1xx	UserInput	User input errors.
10x	Command	Errors preparing to execute commands.
101	CommandDoesNotExist	Command '{command}' does not exist.
102	CommandDeprecated	Command '{command}' is deprecated.
103	CommandInvalidArgument	Invalid argument '{argument}' to command '{command}'.
104	CommandTemporarilyUnavailable	Command '{command}' is temporarily unavailable. -- Such as waiting for required components to start.
105	CommandPermanentlyUnavailable	Command '{command}' is permanently unavailable. -- such as when required component was intentionally configured not to start.
11x	InputValue(ValueError)	Invalid argument value provided to command.
111	GenericInputValue	The value '{value}' for argument '{argument}' is not valid.
112	InputValueIsNone	None or null is not valid value for argument '{argument}'.
2xx	Configuration	Configuration errors.
201	ConfigWrite	Cannot write configuration file '{path}'. -- When writing the default config fails on startup, such as due to permission issues.
202	ConfigRead	Cannot find provided configuration file '{path}'. -- Can't open the config file user provided via command line args.
203	ConfigParse	Failed to parse the configuration file '{path}'. -- Includes the syntax error / line number to help user fix it.
204	ConfigMissing	Configuration file '{path}' is missing setting that has no default / fallback.
205	ConfigInvalid	Configuration file '{path}' has setting with invalid value.
3xx	Network	Networking
301	NoInternet	No internet connection.
302	NoUPnPSupport	Router does not support UPnP.
4xx	Wallet	Wallet Errors
401	TransactionRejected	Transaction rejected, unknown reason.
402	TransactionFeeTooLow	Fee too low.
403	TransactionInvalidSignature	Invalid signature.
404	InsufficientFunds	Not enough funds to cover this transaction. -- determined by wallet prior to attempting to broadcast a tx; this is different for example from a TX being created and sent but then rejected by lbrycrd for unspendable utxos.
405	ChannelKeyNotFound	Channel signing key not found.
406	ChannelKeyInvalid	Channel signing key is out of date. -- For example, channel was updated but you don't have the updated key.
407	DataDownload	Failed to download blob. generic
410	Resolve	Failed to resolve '{url}'.
411	ResolveTimeout	Failed to resolve '{url}' within the timeout.
411	ResolveCensored	Resolve of '{url}' was censored by channel with claim id '{claim_id(censor_hash)}'.
420	KeyFeeAboveMaxAllowed	{message}
421	InvalidPassword	Password is invalid.
422	IncompatibleWalletServer	'{server}:{port}' has an incompatibly old version.
431	ServerPaymentInvalidAddress	Invalid address from wallet server: '{address}' - skipping payment round.
432	ServerPaymentWalletLocked	Cannot spend funds with locked wallet, skipping payment round.
433	ServerPaymentFeeAboveMaxAllowed	Daily server fee of {daily_fee} exceeds maximum configured of {max_fee} LBC.
5xx	Blob	Blobs
500	BlobNotFound	Blob not found.
501	BlobPermissionDenied	Permission denied to read blob.
502	BlobTooBig	Blob is too big.
503	BlobEmpty	Blob is empty.
510	BlobFailedDecryption	Failed to decrypt blob.
511	CorruptBlob	Blobs is corrupted.
520	BlobFailedEncryption	Failed to encrypt blob.
531	DownloadCancelled	Download was canceled.
532	DownloadSDTimeout	Failed to download sd blob {download} within timeout.
533	DownloadDataTimeout	Failed to download data blobs for sd hash {download} within timeout.
534	InvalidStreamDescriptor	{message}
535	InvalidData	{message}
536	InvalidBlobHash	{message}
6xx	Component	Components
601	ComponentStartConditionNotMet	Unresolved dependencies for: {components}
602	ComponentsNotStarted	{message}
7xx	CurrencyExchange	Currency Exchange
701	InvalidExchangeRateResponse	Failed to get exchange rate from {source}: {reason}
702	CurrencyConversion	{message}
703	InvalidCurrency	Invalid currency: {currency} is not a supported currency.