Support downloading a single artifact file

NGitLab.Mock/Clients/JobClient.cs

@@ -45,6 +45,11 @@ public byte[] GetJobArtifacts(int jobId)
             throw new NotImplementedException();
         }
 
+        public byte[] GetJobArtifact(int jobId, string path)
+        {
+            throw new NotImplementedException();
+        }
+
         public IEnumerable<Models.Job> GetJobs(JobScopeMask scope)
         {
             return GetJobs(new JobQuery { Scope = scope });

NGitLab.Tests/JobTests.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Globalization;
 using System.Linq;
+using System.Text;
 using System.Threading.Tasks;
 using NGitLab.Models;
 using NGitLab.Tests.Docker;
@@ -203,5 +204,27 @@ public async Task Test_get_job_artifacts()
                 Assert.IsNotEmpty(artifacts);
             }
         }
+
+        [Test]
+        [NGitLabRetry]
+        public async Task Test_get_job_artifact()
+        {
+            using var context = await GitLabTestContext.CreateAsync();
+            var project = context.CreateProject();
+            var jobsClient = context.Client.GetJobs(project.Id);
+            using (await context.StartRunnerForOneJobAsync(project.Id))
+            {
+                AddGitLabCiFile(context.Client, project);
+                var jobs = await GitLabTestContext.RetryUntilAsync(() => jobsClient.GetJobs(JobScopeMask.Success), jobs => jobs.Any(), TimeSpan.FromMinutes(2));
+                var job = jobs.Single();
+                Assert.AreEqual(JobStatus.Success, job.Status);
+
+                var artifact = jobsClient.GetJobArtifact(job.Id, "file0.txt");
+                Assert.IsNotEmpty(artifact);
+
+                var content = Encoding.ASCII.GetString(artifact).Trim();
+                Assert.AreEqual("test", content);
+            }
+        }
     }
 }

NGitLab/IJobClient.cs

@@ -23,6 +23,8 @@ public interface IJobClient
 
         byte[] GetJobArtifacts(int jobId);
 
+        byte[] GetJobArtifact(int jobId, string path);
+
         string GetTrace(int jobId);
 
         Task<string> GetTraceAsync(int jobId, CancellationToken cancellationToken = default);

NGitLab/Impl/JobClient.cs

@@ -82,6 +82,18 @@ public byte[] GetJobArtifacts(int jobId)
             return result;
         }
 
+        public byte[] GetJobArtifact(int jobId, string path)
+        {
+            byte[] result = null;
+            _api.Get().Stream($"{_jobsPath}/{jobId.ToStringInvariant()}/artifacts/{path}", s =>
+            {
+                using var ms = new MemoryStream();
+                s.CopyTo(ms);
+                result = ms.ToArray();
+            });
+            return result;
+        }
+
         public string GetTrace(int jobId)
         {
             var result = string.Empty;

NGitLab/PublicAPI.Unshipped.txt

@@ -282,6 +282,7 @@ NGitLab.IIssueClient.TimeStatsAsync(int projectId, int issueIid, System.Threadin
 NGitLab.IJobClient
 NGitLab.IJobClient.Get(int jobId) -> NGitLab.Models.Job
 NGitLab.IJobClient.GetAsync(int jobId, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) -> System.Threading.Tasks.Task<NGitLab.Models.Job>
+NGitLab.IJobClient.GetJobArtifact(int jobId, string path) -> byte[]
 NGitLab.IJobClient.GetJobArtifacts(int jobId) -> byte[]
 NGitLab.IJobClient.GetJobs(NGitLab.Models.JobQuery query) -> System.Collections.Generic.IEnumerable<NGitLab.Models.Job>
 NGitLab.IJobClient.GetJobs(NGitLab.Models.JobScopeMask scope) -> System.Collections.Generic.IEnumerable<NGitLab.Models.Job>
@@ -537,6 +538,7 @@ NGitLab.Impl.IssueClient.TimeStatsAsync(int projectId, int issueIid, System.Thre
 NGitLab.Impl.JobClient
 NGitLab.Impl.JobClient.Get(int jobId) -> NGitLab.Models.Job
 NGitLab.Impl.JobClient.GetAsync(int jobId, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) -> System.Threading.Tasks.Task<NGitLab.Models.Job>
+NGitLab.Impl.JobClient.GetJobArtifact(int jobId, string path) -> byte[]
 NGitLab.Impl.JobClient.GetJobArtifacts(int jobId) -> byte[]
 NGitLab.Impl.JobClient.GetJobs(NGitLab.Models.JobQuery query) -> System.Collections.Generic.IEnumerable<NGitLab.Models.Job>
 NGitLab.Impl.JobClient.GetJobs(NGitLab.Models.JobScopeMask scope) -> System.Collections.Generic.IEnumerable<NGitLab.Models.Job>