derrors

var (
	// NotFound indicates that a requested entity was not found (HTTP 404).
	NotFound = errors.New("not found")

	// NotFetched means that the proxy returned "not found" with the
	// Disable-Module-Fetch header set. We don't know if the module really
	// doesn't exist, or the proxy just didn't fetch it.
	NotFetched = errors.New("not fetched by proxy")

	// InvalidArgument indicates that the input into the request is invalid in
	// some way (HTTP 400).
	InvalidArgument = errors.New("invalid argument")

	// BadModule indicates a problem with a module.
	BadModule = errors.New("bad module")

	// ProxyTimedOut indicates that a request timed out when fetching from the Module Mirror.
	ProxyTimedOut = errors.New("proxy timed out")

	// ProxyError is used to capture non-actionable server errors returned from the proxy.
	ProxyError = errors.New("proxy error")

	// BigQueryError is used to capture server errors returned by BigQuery.
	BigQueryError = errors.New("BigQuery error")

	// ScanModulePanicError is used to capture panic issues.
	ScanModulePanicError = errors.New("scan module panic")

	// ScanModuleOSError is used to capture issues with writing the module zip
	// to disk during the scan setup process. This is not an error with govulncheck.
	ScanModuleOSError = errors.New("scan module OS error")

	// LoadPackagesError is used to capture general unclassified issues with
	// load packages during the scan setup process. This is not an error with
	// govulncheck. There are specific load packages errors that are categorized
	// separately, e.g., LoadPackagesNoGoModError.
	LoadPackagesError = errors.New("scan module load packages error")

	// LoadPackagesGoVersionError is used to capture issues with loading
	// packages where the module is not supported by the current Go version.
	// This is not an error with any specific scan technique.
	LoadPackagesGoVersionError = errors.New("scan module load packages error: Go version mismatch")

	// LoadPackagesNoGoModError is used to capture a specific issue with
	// loading packages during the scan setup process where a go.mod file
	// is missing. This is not an error with govulncheck.
	LoadPackagesNoGoModError = errors.New("scan module load packages error: does not have go.mod")

	// LoadPackagesNoGoSumError is used to capture a specific issue with
	// loading packages during the scan setup process where a go.sum file
	// is missing. This is not an error with govulncheck.
	LoadPackagesNoGoSumError = errors.New("scan module load packages error: does not have go.sum")

	// LoadPackagesNoRequiredModuleError is used to capture a specific
	// issue with loading packages during the scan setup process where a package
	// is imported but no required module is provided. This is not an error with
	// govulncheck and is likely happening due to outdated go.sum file.
	LoadPackagesNoRequiredModuleError = errors.New("scan module load packages error: no required module provided")

	// LoadPackagesMissingGoSumEntryError is used to capture a specific
	// issue with loading packages during the scan setup process where a package
	// is imported but some of its go.sum entries are missing. This is not an error
	// with govulncheck and is likely happening due to outdated go.sum file.
	LoadPackagesMissingGoSumEntryError = errors.New("scan module load packages error: missing go.sum entry")

	// LoadVendorError occurs when loading a package fails because of a vendor directory.
	LoadVendorError = errors.New("scan module load packages error: -mod=vendor mode")

	// LoadPackagesSyntheticError is like LoadPackagesError, but when the target
	// packages are from a synthetic module, i.e., non-module we converted into a module.
	LoadPackagesSyntheticError = errors.New("scan synthetic module error")

	// LoadPackagesImportedLocalError occurs when packages use a replace directive
	// with a local directory in their go.mod file. This is not an error with govulncheck.
	LoadPackagesImportedLocalError = errors.New("scan module load packages error: package replaces an import with a local file/directory")

	// ScanModuleGovulncheckDBConnectionError is used to capture a specific
	// govulncheck scan error where a connection to vuln db failed.
	ScanModuleGovulncheckDBConnectionError = errors.New("scan module govulncheck error: communication with vuln db failed")

	// ScanModuleGovulncheckError is used to capture general issues where
	// govulncheck fails due to an uncategorized error.
	ScanModuleGovulncheckError = errors.New("scan module govulncheck error")

	// ScanSyntheticModuleError is used to capture general issues where
	// govulncheck or analysis fails due to an uncategorized error on a
	// synthetic module. The failure can be due to loading of packages or
	// due to an issue in the analysis.
	ScanSyntheticModuleError = errors.New("scan synthetic module error")

	// ScanModuleSandboxError is used to capture general sandbox related issues.
	ScanModuleSandboxError = errors.New("sandbox related issue")

	// ScanModuleMemoryLimitExceeded occurs when scanning uses too much memory.
	ScanModuleMemoryLimitExceeded = errors.New("scan module memory limit exceeded")

	// ScanModuleTooManyOpenFiles occurs when there are too many files open while scanning.
	ScanModuleTooManyOpenFiles = errors.New("scan module too many open files")
)