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Lock the fake database during transactions #2478

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Merged
merged 5 commits into from
Jun 17, 2022
Merged

Lock the fake database during transactions #2478

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fa3a3db
Lock the fake database during transactions
spikecurtis Jun 17, 2022
945eed2
Add ut for fake database transactions
spikecurtis Jun 17, 2022
6299d0c
fix lint
spikecurtis Jun 17, 2022
d7efec3
Merge branch 'main' of github.com:coder/coder into spike/2436_better_…
spikecurtis Jun 17, 2022
7da91ab
Fix lint macOS
spikecurtis Jun 17, 2022
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71 changes: 47 additions & 24 deletions coderd/database/databasefake/databasefake.go
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Original file line number Diff line number Diff line change
Expand Up @@ -18,33 +18,54 @@ import (
// New returns an in-memory fake of the database.
func New() database.Store {
return &fakeQuerier{
apiKeys: make([]database.APIKey, 0),
organizationMembers: make([]database.OrganizationMember, 0),
organizations: make([]database.Organization, 0),
users: make([]database.User, 0),

auditLogs: make([]database.AuditLog, 0),
files: make([]database.File, 0),
gitSSHKey: make([]database.GitSSHKey, 0),
parameterSchemas: make([]database.ParameterSchema, 0),
parameterValues: make([]database.ParameterValue, 0),
provisionerDaemons: make([]database.ProvisionerDaemon, 0),
provisionerJobAgents: make([]database.WorkspaceAgent, 0),
provisionerJobLogs: make([]database.ProvisionerJobLog, 0),
provisionerJobResources: make([]database.WorkspaceResource, 0),
provisionerJobs: make([]database.ProvisionerJob, 0),
templateVersions: make([]database.TemplateVersion, 0),
templates: make([]database.Template, 0),
workspaceBuilds: make([]database.WorkspaceBuild, 0),
workspaceApps: make([]database.WorkspaceApp, 0),
workspaces: make([]database.Workspace, 0),
}
}
mutex: &sync.RWMutex{},
data: &data{
apiKeys: make([]database.APIKey, 0),
organizationMembers: make([]database.OrganizationMember, 0),
organizations: make([]database.Organization, 0),
users: make([]database.User, 0),

auditLogs: make([]database.AuditLog, 0),
files: make([]database.File, 0),
gitSSHKey: make([]database.GitSSHKey, 0),
parameterSchemas: make([]database.ParameterSchema, 0),
parameterValues: make([]database.ParameterValue, 0),
provisionerDaemons: make([]database.ProvisionerDaemon, 0),
provisionerJobAgents: make([]database.WorkspaceAgent, 0),
provisionerJobLogs: make([]database.ProvisionerJobLog, 0),
provisionerJobResources: make([]database.WorkspaceResource, 0),
provisionerJobs: make([]database.ProvisionerJob, 0),
templateVersions: make([]database.TemplateVersion, 0),
templates: make([]database.Template, 0),
workspaceBuilds: make([]database.WorkspaceBuild, 0),
workspaceApps: make([]database.WorkspaceApp, 0),
workspaces: make([]database.Workspace, 0),
},
}
}

type rwMutex interface {
Lock()
RLock()
Unlock()
RUnlock()
}

// inTxMutex is a no op, since inside a transaction we are already locked.
type inTxMutex struct{}

func (_ *inTxMutex) Lock() {}
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@Emyrk Emyrk Jun 17, 2022 •
edited
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Even more lazy.

Suggested change
func (_ *inTxMutex) Lock() {}
func (nTxMutex) Lock() {}

func (_ *inTxMutex) RLock() {}
func (_ *inTxMutex) Unlock() {}
func (_ *inTxMutex) RUnlock() {}

// fakeQuerier replicates database functionality to enable quick testing.
type fakeQuerier struct {
mutex sync.RWMutex
mutex rwMutex
*data
}

type data struct {
// Legacy tables
apiKeys []database.APIKey
organizations []database.Organization
Expand Down Expand Up @@ -73,7 +94,9 @@ type fakeQuerier struct {

// InTx doesn't rollback data properly for in-memory yet.
func (q *fakeQuerier) InTx(fn func(database.Store) error) error {
return fn(q)
q.mutex.Lock()
defer q.mutex.Unlock()
return fn(&fakeQuerier{mutex: &inTxMutex{}, data: q.data})
}

func (q *fakeQuerier) AcquireProvisionerJob(_ context.Context, arg database.AcquireProvisionerJobParams) (database.ProvisionerJob, error) {
Expand Down