| // Copyright 2022 The LUCI Authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| // Package provenance provides API definitions and simple libraries to interface |
| // with the APIs. |
| // |
| // It supports all possible provenance information that are supported currently. |
| // |
| // Provenance is a metadata about an artifact that provides information to trace |
| // a binary back to its sources. It also provides a chain-of-custody as the |
| // artifact traverses through multiple systems. |
| // |
| // Summary |
| // |
| // Provenance defines APIs for reporting `provenance` metadata, in order to |
| // establish a traceable lineage for artifacts produced within the LUCI |
| // ecosystem. |
| // Artifact provenance is otherwise defined as "metadata which records a |
| // snapshot of the build-time states that correspond to an artifact." |
| // |
| // Usage |
| // |
| // Service self-report is used by local processes to insert relevant information |
| // into provenance. Server side implementation is beyond the scope of this |
| // package and is Google-internal. |
| // |
| // A local git checkout can be reported by: |
| // pClient, _ := client.MakeProvenanceClient(ctx, "http://localhost:port") |
| // reporter := &reporter.Report{RClient: pClient} |
| // ok, err := reporter.ReportGitCheckout(ctx, "https://repo.git", "deadbeef", "refs/heads/example") |
| // if err != nil & !ok { |
| // ... |
| // } |
| // |
| // This call will return a result back to you, user can implement it in a |
| // blocking way to ensure the event was recorded. Failure mode here can be |
| // internal error (that would include invalid input) as well as absence of local |
| // provenance server. |
| // |
| // Results here can be: |
| // (true, nil) => report successfully exported |
| // (true, ErrServiceUnavailable) => service unavailable |
| // (false, err) => all other cases |
| // |
| // This allows users to determine how to interpret failure. A concrete example |
| // would be a workload where security policy is set to "enforce" mode, meaning |
| // checkout should fail loudly, in this case `ok` status can be ignored. |
| // For workloads where this is in "audit" mode, API will return a success ok |
| // status when local server isn't configured/unreachable. This is particularly |
| // helpful for flexible workloads. |
| // |
| // Similarly other interfaces of this API can be used to report a variety of |
| // interesting things. |
| package provenance |
