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fix: report unknown release versions instead of a server null reference #696

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af509e5
fix: report unknown release versions instead of a server null reference
NickJosevski Aug 19, 2026
2541136
fix: don't assert "not found" when the release lookup is ambiguous
NickJosevski Aug 31, 2026
cf2dc4c
refactor: drop the now-unreachable web-URL release lookup
NickJosevski Aug 31, 2026
14ff2ee
fix: only a missing release aborts the deploy pre-flight
NickJosevski Aug 31, 2026
4e9ec94
refactor: call selectors.FindRelease directly from GetReleaseID
NickJosevski Aug 31, 2026
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37 changes: 22 additions & 15 deletions pkg/cmd/release/deploy/deploy.go
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Expand Up @@ -317,6 +317,23 @@ func deployRun(cmd *cobra.Command, f factory.Factory, flags *DeployFlags) error
return err
}
options.ProjectName = project.GetName()

if options.ReleaseVersion != "" {
// resolve the release up front; the executions API reports an unknown version as an
// unhelpful null reference error, and having the ID saves looking it up again later.
// Only a "no such release" answer is fatal: this lookup is new to the deploy path, so
// anything else (no ReleaseView permission, a transient 5xx) must not fail a deploy
// that would previously have succeeded. In those cases the server stays the authority
// and we simply go without the release ID.
release, err := selectors.FindRelease(octopus, f.GetCurrentSpace().ID, project, options.ReleaseVersion)

@NickJosevski NickJosevski Aug 30, 2026

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Behavioral note: this pre-flight makes every automation-mode deploy depend on being able to GET the release (ReleaseView), which the old flow never required — the executions API only ever saw the version string. A CI service account scoped to deploy but not to read releases (or a transient 5xx on this GET) now aborts a deploy that previously succeeded, since non-404 errors are returned untouched. Probably an acceptable trade, but worth a conscious decision — an alternative is to treat only a definitive 404 as fatal and fall through to the POST on any other lookup failure.

@NickJosevski NickJosevski Sep 4, 2026 •
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Actioned in 14ff2ee. The pre-flight now only aborts on selectors.ReleaseNotFoundError (via errors.As); any other error leaves options.ReleaseID empty and falls through to the POST, letting the server stay the authority. New automation-mode test covers a 403 from the release GET still reaching the deploy.

One residual worth naming, because it is narrower than it looks. The fatal/non-fatal split is not really "was it a 404" — it is "did the response carry a body". DoRawJsonRequest short-circuits on resp.ContentLength == 0 before it ever reads the status, so the status code is only available for responses that had a decodable JSON body:

  • 404 with an APIError body → Confirmed: true → fatal (correct)
  • 404 with an empty body → Confirmed: false → fatal (correct, and the reason this case cannot be made non-fatal — it would put the NRE back)
  • 403 / 502 with a body → returned untouched → non-fatal, deploy proceeds (what the new test covers)
  • 403 / 502 with Content-Length: 0 → indistinguishable from the row above it → still fatal, reported as "could not resolve …"

So the mitigation covers failures that come back with a body, and the bodyless non-404 is the leftover. Note a genuine proxy 502 usually has an HTML body, which fails to decode as APIError and returns a decode error — also non-fatal. That leaves the gap at explicitly bodyless non-404 responses, which is a small set.

The question that would close it properly: does Octopus GET /api/{space}/projects/{id}/releases/{version} return a 404 with an APIError body for a version that does not exist? If it always does, the empty-body branch is only ever reached by non-404s and could safely be non-fatal, collapsing the residual entirely. This PR handles both shapes defensively but does not establish which one the server actually sends — worth confirming against a real instance before deciding.

@NickJosevski NickJosevski Sep 4, 2026 •
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Checked against a live instance (md.octopus.app, Octopus Server 2026.3.14820, Octopus Cloud). The residual is not reachable there — Confirmed: true is the real path.

Raw HTTP for GET /api/Spaces-1/projects/{id}/releases/{missing-version}:

HTTP/2 404
content-type: application/json; charset=UTF-8

{ "ErrorMessage": "Release '9.9.9-does-not-exist' for project 'Cycle' was not found." }

The 404 carries an APIError body, so it decodes on the error path and arrives as Confirmed: true.

The framing detail matters more than the body, though. This endpoint never sends Content-Length — HTTP/2 omits it, and forcing --http1.1 gives transfer-encoding: chunked. Go sets resp.ContentLength = -1 in both cases, so resp.ContentLength == 0 in DoRawJsonRequest is false and the short-circuit is never taken at all, regardless of status code. Verified through the real SDK rather than inferred:

RAW: proto=HTTP/2.0 status=404 ContentLength=-1  -> short-circuit (==0)? false

--- FindRelease("9.9.9-nope") ---
  ReleaseNotFoundError, Confirmed=true
--- FindRelease("latest") ---
  ReleaseNotFoundError, Confirmed=true
--- FindRelease("0.0.23") ---
  OK, release ID=Releases-1094

So on this server the Confirmed: false branch is unreachable, which also means the bodyless-403/502 case I worried about cannot arise from the server itself. It could still arise from something in front of it (a customer reverse proxy emitting Content-Length: 0), so the branch is worth keeping as a guard — but as a guard, not as an expected path. I would leave 14ff2ee as-is; it costs nothing and the errors.As split is the right shape either way.

var releaseNotFound *selectors.ReleaseNotFoundError
if errors.As(err, &releaseNotFound) {
return err
}
if err == nil {
options.ReleaseID = release.ID
}
}
}

}
Expand Down Expand Up @@ -350,20 +367,10 @@ func deployRun(cmd *cobra.Command, f factory.Factory, flags *DeployFlags) error

// output web URL all the time, so long as output format is not JSON or basic
if err == nil && !constants.IsProgrammaticOutputFormat(outputFormat) {
releaseID := options.ReleaseID
if releaseID == "" {
// we may already have the release ID from AskQuestions. If not, we need to go and look up the release ID to link to it
// which needs the project ID. Errors here are ignorable; it's not the end of the world if we can't print the web link
prj, err := selectors.FindProject(octopus, options.ProjectName)
if err == nil {
rel, err := releases.GetReleaseInProject(octopus, f.GetCurrentSpace().ID, prj.ID, options.ReleaseVersion)
if err == nil {
releaseID = rel.ID
}
}
}

if releaseID != "" {
// both paths that reach here have already resolved the release: AskQuestions in interactive
// mode, the pre-flight lookup in automation mode. It stays empty only when that lookup failed
// for a reason we deliberately ignored, in which case repeating it here would fail too.
if releaseID := options.ReleaseID; releaseID != "" {
link := output.Bluef("%s/app#/%s/releases/%s", f.GetCurrentHost(), f.GetCurrentSpace().ID, releaseID)
cmd.Printf("\nView this release on Octopus Deploy: %s\n", link)
}
Expand Down Expand Up @@ -426,7 +433,7 @@ func AskQuestions(octopus *octopusApiClient.Client, stdout io.Writer, asker ques
return err
}
} else {
selectedRelease, err = releases.GetReleaseInProject(octopus, space.ID, selectedProject.ID, options.ReleaseVersion)
selectedRelease, err = selectors.FindRelease(octopus, space.ID, selectedProject, options.ReleaseVersion)
if err != nil {
return err
}
Expand Down
118 changes: 94 additions & 24 deletions pkg/cmd/release/deploy/deploy_test.go
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Expand Up @@ -1594,6 +1594,7 @@ func TestDeployCreate_AutomationMode(t *testing.T) {
api.ExpectRequest(t, "GET", "/api/").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProject.GetName()).RespondWith(fireProject)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProjectID+"/releases/1.9").RespondWith(release10)

_, err := testutil.ReceivePair(cmdReceiver)
assert.EqualError(t, err, "environment(s) must be specified")
Expand All @@ -1602,6 +1603,87 @@ func TestDeployCreate_AutomationMode(t *testing.T) {
assert.Equal(t, "", stdErr.String())
}},

{"release deploy reports a release version that doesn't exist", func(t *testing.T, api *testutil.MockHttpServer, rootCmd *cobra.Command, stdOut *bytes.Buffer, stdErr *bytes.Buffer) {
cmdReceiver := testutil.GoBegin2(func() (*cobra.Command, error) {
defer api.Close()
rootCmd.SetArgs([]string{"release", "deploy", "--project", fireProject.Name, "--version", "9.9", "--environment", "dev"})
return rootCmd.ExecuteC()
})

api.ExpectRequest(t, "GET", "/api/").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProject.GetName()).RespondWith(fireProject)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProjectID+"/releases/9.9").
RespondWithStatus(404, "404 Not Found", &core.APIError{ErrorMessage: "The resource you requested was not found."})

_, err := testutil.ReceivePair(cmdReceiver)
assert.EqualError(t, err, "cannot find a release with version '9.9' in project 'Fire Project'")

assert.Equal(t, "", stdOut.String())
assert.Equal(t, "", stdErr.String())
}},

{"release deploy explains that 'latest' is not a supported release version", func(t *testing.T, api *testutil.MockHttpServer, rootCmd *cobra.Command, stdOut *bytes.Buffer, stdErr *bytes.Buffer) {
cmdReceiver := testutil.GoBegin2(func() (*cobra.Command, error) {
defer api.Close()
rootCmd.SetArgs([]string{"release", "deploy", "--project", fireProject.Name, "--version", "latest", "--environment", "dev"})
return rootCmd.ExecuteC()
})

api.ExpectRequest(t, "GET", "/api/").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProject.GetName()).RespondWith(fireProject)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProjectID+"/releases/latest").RespondWithStatus(404, "NotFound", nil)

_, err := testutil.ReceivePair(cmdReceiver)
assert.EqualError(t, err, "could not resolve a release with version 'latest' in project 'Fire Project'; the server returned an empty response, which usually means there is no such release, but can also mean the lookup itself failed. 'latest' is not a supported alias, specify an exact version. Run 'octopus release list --project \"Fire Project\"' to see the available versions")

assert.Equal(t, "", stdOut.String())
assert.Equal(t, "", stdErr.String())
}},

{"release deploy proceeds when the release lookup fails for a reason other than not-found", func(t *testing.T, api *testutil.MockHttpServer, rootCmd *cobra.Command, stdOut *bytes.Buffer, stdErr *bytes.Buffer) {
cmdReceiver := testutil.GoBegin2(func() (*cobra.Command, error) {
defer api.Close()
rootCmd.SetArgs([]string{"release", "deploy", "--project", fireProject.Name, "--version", "1.0", "--environment", "dev"})
return rootCmd.ExecuteC()
})

api.ExpectRequest(t, "GET", "/api/").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProject.GetName()).RespondWith(fireProject)

// an account allowed to deploy but not to read releases must not be blocked by the pre-flight lookup
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProjectID+"/releases/1.0").
RespondWithStatus(403, "403 Forbidden", &core.APIError{ErrorMessage: "You do not have permission to perform this action."})

req := api.ExpectRequest(t, "POST", "/api/Spaces-1/deployments/create/untenanted/v1")
requestBody, err := testutil.ReadJson[deployments.CreateDeploymentUntenantedCommandV1](req.Request.Body)
assert.Nil(t, err)

assert.Equal(t, deployments.CreateDeploymentUntenantedCommandV1{
ReleaseVersion: "1.0",
EnvironmentNames: []string{"dev"},
CreateExecutionAbstractCommandV1: deployments.CreateExecutionAbstractCommandV1{
SpaceID: "Spaces-1",
ProjectIDOrName: fireProject.Name,
},
}, requestBody)

req.RespondWith(&deployments.CreateDeploymentResponseV1{
DeploymentServerTasks: []*deployments.DeploymentServerTask{
{DeploymentID: "Deployments-203", ServerTaskID: "ServerTasks-29394"},
},
})

_, err = testutil.ReceivePair(cmdReceiver)
assert.Nil(t, err)

// no release ID, so no web link; the deployment itself still went ahead
assert.Equal(t, "Successfully started 1 deployment(s)\n", stdOut.String())
assert.Equal(t, "", stdErr.String())
}},

{"release deploy specifying project, version, env only (bare minimum) assuming untenanted", func(t *testing.T, api *testutil.MockHttpServer, rootCmd *cobra.Command, stdOut *bytes.Buffer, stdErr *bytes.Buffer) {
cmdReceiver := testutil.GoBegin2(func() (*cobra.Command, error) {
defer api.Close()
Expand All @@ -1612,6 +1694,7 @@ func TestDeployCreate_AutomationMode(t *testing.T) {
api.ExpectRequest(t, "GET", "/api/").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProject.GetName()).RespondWith(fireProject)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProjectID+"/releases/1.0").RespondWith(release10)

// Note: because we didn't specify --tenant or --tenant-tag, automation-mode code is going to assume untenanted
req := api.ExpectRequest(t, "POST", "/api/Spaces-1/deployments/create/untenanted/v1")
Expand All @@ -1634,12 +1717,7 @@ func TestDeployCreate_AutomationMode(t *testing.T) {
},
})

// now it's going to try and look up the project/version to generate the web URL
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/Fire Project").RespondWithStatus(404, "NotFound", nil)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects?partialName=Fire+Project").RespondWith(resources.Resources[*projects.Project]{
Items: []*projects.Project{fireProject},
})
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProjectID+"/releases/1.0").RespondWith(release10)
// no lookup to generate the web URL; the release was already resolved before deploying

_, err = testutil.ReceivePair(cmdReceiver)
assert.Nil(t, err)
Expand All @@ -1662,6 +1740,7 @@ func TestDeployCreate_AutomationMode(t *testing.T) {
api.ExpectRequest(t, "GET", "/api/").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProject.GetName()).RespondWith(fireProject)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProjectID+"/releases/2.1").RespondWith(release10)

// Note: because we didn't specify --tenant or --tenant-tag, automation-mode code is going to assume untenanted
req := api.ExpectRequest(t, "POST", "/api/Spaces-1/deployments/create/untenanted/v1")
Expand All @@ -1684,12 +1763,7 @@ func TestDeployCreate_AutomationMode(t *testing.T) {
},
})

// now it's going to try and look up the project/version to generate the web URL
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/Fire Project").RespondWithStatus(404, "NotFound", nil)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects?partialName=Fire+Project").RespondWith(resources.Resources[*projects.Project]{
Items: []*projects.Project{fireProject},
})
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProjectID+"/releases/2.1").RespondWith(release10)
// no lookup to generate the web URL; the release was already resolved before deploying

_, err = testutil.ReceivePair(cmdReceiver)
assert.Nil(t, err)
Expand All @@ -1712,6 +1786,7 @@ func TestDeployCreate_AutomationMode(t *testing.T) {
api.ExpectRequest(t, "GET", "/api/").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProject.GetName()).RespondWith(fireProject)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProjectID+"/releases/1.0").RespondWith(release10)

// Note: because we didn't specify --tenant or --tenant-tag, automation-mode code is going to assume untenanted
api.ExpectRequest(t, "POST", "/api/Spaces-1/deployments/create/untenanted/v1").RespondWith(&deployments.CreateDeploymentResponseV1{
Expand Down Expand Up @@ -1742,6 +1817,7 @@ func TestDeployCreate_AutomationMode(t *testing.T) {
api.ExpectRequest(t, "GET", "/api/").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProject.GetName()).RespondWith(fireProject)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProjectID+"/releases/1.0").RespondWith(release10)

// Note: because we didn't specify --tenant or --tenant-tag, automation-mode code is going to assume untenanted
serverTasks := []*deployments.DeploymentServerTask{
Expand Down Expand Up @@ -1773,6 +1849,7 @@ func TestDeployCreate_AutomationMode(t *testing.T) {
api.ExpectRequest(t, "GET", "/api/").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProject.GetName()).RespondWith(fireProject)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProjectID+"/releases/1.0").RespondWith(release10)

req := api.ExpectRequest(t, "POST", "/api/Spaces-1/deployments/create/tenanted/v1")
requestBody, err := testutil.ReadJson[deployments.CreateDeploymentTenantedCommandV1](req.Request.Body)
Expand All @@ -1794,12 +1871,7 @@ func TestDeployCreate_AutomationMode(t *testing.T) {
},
})

// now it's going to try and look up the project/version to generate the web URL
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/Fire Project").RespondWithStatus(404, "NotFound", nil)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects?partialName=Fire+Project").RespondWith(resources.Resources[*projects.Project]{
Items: []*projects.Project{fireProject},
})
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProjectID+"/releases/1.0").RespondWith(release10)
// no lookup to generate the web URL; the release was already resolved before deploying

_, err = testutil.ReceivePair(cmdReceiver)
assert.Nil(t, err)
Expand All @@ -1822,6 +1894,7 @@ func TestDeployCreate_AutomationMode(t *testing.T) {
api.ExpectRequest(t, "GET", "/api/").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProject.GetName()).RespondWith(fireProject)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProjectID+"/releases/1.0").RespondWith(release10)

req := api.ExpectRequest(t, "POST", "/api/Spaces-1/deployments/create/tenanted/v1")
requestBody, err := testutil.ReadJson[deployments.CreateDeploymentTenantedCommandV1](req.Request.Body)
Expand All @@ -1843,12 +1916,7 @@ func TestDeployCreate_AutomationMode(t *testing.T) {
},
})

// now it's going to try and look up the project/version to generate the web URL
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/Fire Project").RespondWithStatus(404, "NotFound", nil)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects?partialName=Fire+Project").RespondWith(resources.Resources[*projects.Project]{
Items: []*projects.Project{fireProject},
})
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProjectID+"/releases/1.0").RespondWith(release10)
// no lookup to generate the web URL; the release was already resolved before deploying

_, err = testutil.ReceivePair(cmdReceiver)
assert.Nil(t, err)
Expand Down Expand Up @@ -1888,6 +1956,7 @@ func TestDeployCreate_AutomationMode(t *testing.T) {
api.ExpectRequest(t, "GET", "/api/").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProject.GetName()).RespondWith(fireProject)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProjectID+"/releases/1.0").RespondWith(release10)

// Note: because we didn't specify --tenant or --tenant-tag, automation-mode code is going to assume untenanted
req := api.ExpectRequest(t, "POST", "/api/Spaces-1/deployments/create/untenanted/v1")
Expand Down Expand Up @@ -1962,6 +2031,7 @@ func TestDeployCreate_AutomationMode(t *testing.T) {
api.ExpectRequest(t, "GET", "/api/").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1").RespondWith(rootResource)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProject.GetName()).RespondWith(fireProject)
api.ExpectRequest(t, "GET", "/api/Spaces-1/projects/"+fireProjectID+"/releases/1.0").RespondWith(release10)

req := api.ExpectRequest(t, "POST", "/api/Spaces-1/deployments/create/tenanted/v1")
requestBody, err := testutil.ReadJson[deployments.CreateDeploymentTenantedCommandV1](req.Request.Body)
Expand Down
15 changes: 1 addition & 14 deletions pkg/cmd/release/progression/shared/shared.go
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,7 @@ func GetReleaseID(octopus *client.Client, spaceID string, projectIdentifier stri
return "", err
}

selectedRelease, err := FindRelease(octopus, selectedProject, version)
selectedRelease, err := selectors.FindRelease(octopus, spaceID, selectedProject, version)
if err != nil {
return "", err
}
Expand All @@ -38,16 +38,3 @@ func SelectRelease(octopus *client.Client, project *projects.Project, ask questi

return selectedRelease, nil
}

func FindRelease(octopus *client.Client, project *projects.Project, version string) (*releases.Release, error) {
existingRelease, err := releases.GetReleaseInProject(octopus, octopus.GetSpaceID(), project.GetID(), version)
if err != nil {
return nil, err
}

if existingRelease == nil {
return nil, fmt.Errorf("unable to locate a release with version/release number '%s'", version)
}

return existingRelease, nil
}
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