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Merge pull request #3549 from SwiftPackageIndex/rework-error-handling
Rework error handling
2 parents a9c2354 + 475ce9d commit 8f8c2f0

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16 files changed

+608
-328
lines changed

16 files changed

+608
-328
lines changed

‎Sources/App/Commands/Analyze.swift‎

Lines changed: 1 addition & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -152,10 +152,7 @@ extension Analyze {
152152
}
153153
}
154154

155-
try await updatePackages(client: client,
156-
database: database,
157-
results: packageResults,
158-
stage: .analysis)
155+
try await updatePackages(client: client, database: database, results: packageResults)
159156

160157
try await RecentPackage.refresh(on: database)
161158
try await RecentRelease.refresh(on: database)

‎Sources/App/Commands/Common.swift‎

Lines changed: 104 additions & 90 deletions
Original file line numberDiff line numberDiff line change
@@ -17,111 +17,125 @@ import PostgresKit
1717
import Vapor
1818

1919

20-
/// Update packages (in the `[Result<Joined<Package, Repository>, Error>]` array).
21-
///
22-
/// - Parameters:
23-
/// - client: `Client` object
24-
/// - database: `Database` object
25-
/// - results: `Joined<Package, Repository>` results to update
26-
/// - stage: Processing stage
27-
func updatePackages(client: Client,
28-
database: Database,
29-
results: [Result<Joined<Package, Repository>, Error>],
30-
stage: Package.ProcessingStage) async throws {
31-
do {
32-
let total = results.count
33-
let errors = results.filter(\.isError).count
34-
let errorRate = total > 0 ? 100.0 * Double(errors) / Double(total) : 0.0
35-
switch errorRate {
36-
case 0:
37-
Current.logger().info("Updating \(total) packages for stage '\(stage)'")
38-
case 0..<20:
39-
Current.logger().info("Updating \(total) packages for stage '\(stage)' (errors: \(errors))")
40-
default:
41-
Current.logger().critical("updatePackages: unusually high error rate: \(errors)/\(total) = \(errorRate)%")
42-
}
43-
}
44-
for result in results {
45-
do {
46-
try await updatePackage(client: client, database: database, result: result, stage: stage)
47-
} catch {
48-
Current.logger().critical("updatePackage failed: \(error)")
49-
}
50-
}
51-
52-
Current.logger().debug("updateStatus ops: \(results.count)")
20+
// TODO: Adopt ProcessingError also in Analysis and then factor out generic parts back into Common
21+
protocol ProcessingError: Error, CustomStringConvertible {
22+
associatedtype UnderlyingError: Error & CustomStringConvertible
23+
var packageId: Package.Id { get }
24+
var underlyingError: UnderlyingError { get }
25+
var level: Logger.Level { get }
26+
var status: Package.Status { get }
5327
}
5428

5529

56-
func updatePackage(client: Client,
57-
database: Database,
58-
result: Result<Joined<Package, Repository>, Error>,
59-
stage: Package.ProcessingStage) async throws {
60-
switch result {
61-
case .success(let res):
62-
let pkg = res.package
63-
if stage == .ingestion && pkg.status == .new {
64-
// newly ingested package: leave status == .new for fast-track
65-
// analysis
66-
} else {
67-
pkg.status = .ok
30+
// TODO: Leaving this extension here for now in order to group the updating/error reporting in one place for both Ingestion and Analysis. Eventually these should either go to their respective files or move common parts into a Common namespace.
31+
extension Analyze {
32+
/// Update packages (in the `[Result<Joined<Package, Repository>, Error>]` array).
33+
///
34+
/// - Parameters:
35+
/// - client: `Client` object
36+
/// - database: `Database` object
37+
/// - results: `Joined<Package, Repository>` results to update
38+
/// - stage: Processing stage
39+
static func updatePackages(client: Client,
40+
database: Database,
41+
results: [Result<Joined<Package, Repository>, Error>]) async throws {
42+
do {
43+
let total = results.count
44+
let errors = results.filter(\.isError).count
45+
let errorRate = total > 0 ? 100.0 * Double(errors) / Double(total) : 0.0
46+
switch errorRate {
47+
case 0:
48+
Current.logger().info("Updating \(total) packages for stage 'analysis'")
49+
case 0..<20:
50+
Current.logger().info("Updating \(total) packages for stage 'analysis' (errors: \(errors))")
51+
default:
52+
Current.logger().critical("updatePackages: unusually high error rate: \(errors)/\(total) = \(errorRate)%")
6853
}
69-
pkg.processingStage = stage
54+
}
55+
for result in results {
7056
do {
71-
try await pkg.update(on: database)
57+
try await updatePackage(client: client, database: database, result: result)
7258
} catch {
73-
Current.logger().report(error: error)
59+
Current.logger().critical("updatePackage failed: \(error)")
7460
}
61+
}
7562

76-
// PSQLError also conforms to DatabaseError but we want to intercept it specifically,
77-
// because it allows us to log more concise error messages via serverInfo[.message]
78-
case let .failure(error) where error is PSQLError:
79-
// Escalate database errors to critical
80-
let error = error as! PSQLError
81-
let msg = error.serverInfo?[.message] ?? String(reflecting: error)
82-
Current.logger().critical("\(msg)")
83-
try await recordError(database: database, error: error, stage: stage)
63+
Current.logger().debug("updateStatus ops: \(results.count)")
64+
}
8465

85-
case let .failure(error) where error is DatabaseError:
86-
// Escalate database errors to critical
87-
Current.logger().critical("\(String(reflecting: error))")
88-
try await recordError(database: database, error: error, stage: stage)
66+
static func updatePackage(client: Client,
67+
database: Database,
68+
result: Result<Joined<Package, Repository>, Error>) async throws {
69+
switch result {
70+
case .success(let res):
71+
try await res.package.update(on: database, status: .ok, stage: .analysis)
8972

90-
case let .failure(error):
91-
Current.logger().report(error: error)
92-
try await recordError(database: database, error: error, stage: stage)
73+
// PSQLError also conforms to DatabaseError but we want to intercept it specifically,
74+
// because it allows us to log more concise error messages via serverInfo[.message]
75+
case let .failure(error) where error is PSQLError:
76+
// Escalate database errors to critical
77+
let error = error as! PSQLError
78+
let msg = error.serverInfo?[.message] ?? String(reflecting: error)
79+
Current.logger().critical("\(msg)")
80+
try await recordError(database: database, error: error)
81+
82+
case let .failure(error) where error is DatabaseError:
83+
// Escalate database errors to critical
84+
Current.logger().critical("\(String(reflecting: error))")
85+
try await recordError(database: database, error: error)
86+
87+
case let .failure(error):
88+
Current.logger().report(error: error)
89+
try await recordError(database: database, error: error)
90+
}
9391
}
94-
}
9592

93+
static func recordError(database: Database, error: Error) async throws {
94+
func setStatus(id: Package.Id?, status: Package.Status) async throws {
95+
guard let id = id else { return }
96+
try await Package.query(on: database)
97+
.filter(\.$id == id)
98+
.set(\.$processingStage, to: .analysis)
99+
.set(\.$status, to: status)
100+
.update()
101+
}
102+
103+
guard let error = error as? AppError else { return }
96104

97-
func recordError(database: Database,
98-
error: Error,
99-
stage: Package.ProcessingStage) async throws {
100-
func setStatus(id: Package.Id?, status: Package.Status) async throws {
101-
guard let id = id else { return }
102-
try await Package.query(on: database)
103-
.filter(\.$id == id)
104-
.set(\.$processingStage, to: stage)
105-
.set(\.$status, to: status)
106-
.update()
105+
switch error {
106+
case let .analysisError(id, _):
107+
try await setStatus(id: id, status: .analysisFailed)
108+
case .envVariableNotSet, .shellCommandFailed:
109+
break
110+
case let .genericError(id, _):
111+
try await setStatus(id: id, status: .ingestionFailed)
112+
case let .invalidPackageCachePath(id, _):
113+
try await setStatus(id: id, status: .invalidCachePath)
114+
case let .cacheDirectoryDoesNotExist(id, _):
115+
try await setStatus(id: id, status: .cacheDirectoryDoesNotExist)
116+
case let .invalidRevision(id, _):
117+
try await setStatus(id: id, status: .analysisFailed)
118+
case let .noValidVersions(id, _):
119+
try await setStatus(id: id, status: .noValidVersions)
120+
}
107121
}
122+
}
108123

109-
guard let error = error as? AppError else { return }
110124

111-
switch error {
112-
case let .analysisError(id, _):
113-
try await setStatus(id: id, status: .analysisFailed)
114-
case .envVariableNotSet, .shellCommandFailed:
115-
break
116-
case let .genericError(id, _):
117-
try await setStatus(id: id, status: .ingestionFailed)
118-
case let .invalidPackageCachePath(id, _):
119-
try await setStatus(id: id, status: .invalidCachePath)
120-
case let .cacheDirectoryDoesNotExist(id, _):
121-
try await setStatus(id: id, status: .cacheDirectoryDoesNotExist)
122-
case let .invalidRevision(id, _):
123-
try await setStatus(id: id, status: .analysisFailed)
124-
case let .noValidVersions(id, _):
125-
try await setStatus(id: id, status: .noValidVersions)
125+
// TODO: Leaving this extension here for now in order to group the updating/error reporting in one place for both Ingestion and Analysis. Eventually these should either go to their respective files or move common parts into a Common namespace.
126+
extension Ingestion {
127+
static func updatePackage(client: Client,
128+
database: Database,
129+
result: Result<Joined<Package, Repository>, Ingestion.Error>,
130+
stage: Package.ProcessingStage) async throws {
131+
switch result {
132+
case .success(let res):
133+
// for newly ingested package leave status == .new in order to fast-track analysis
134+
let updatedStatus: Package.Status = res.package.status == .new ? .new : .ok
135+
try await res.package.update(on: database, status: updatedStatus, stage: stage)
136+
case .failure(let failure):
137+
Current.logger().log(level: failure.level, "\(failure)")
138+
try await Package.update(for: failure.packageId, on: database, status: failure.status, stage: stage)
139+
}
126140
}
127141
}

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