GODRIVER-3098 Drop support for MongoDB 3.6

.evergreen/config.yml

@@ -1668,10 +1668,6 @@ axes:
         display_name: "4.0"
         variables:
           VERSION: "4.0"
-      - id: "3.6"
-        display_name: "3.6"
-        variables:
-          VERSION: "3.6"
       - id: "rapid"
         display_name: "rapid"
         variables:
@@ -2094,19 +2090,6 @@ buildvariants:
     tasks:
       - name: ".goleak"
 
-  - matrix_name: "tests-rhel-36-with-zlib-support"
-    tags: ["pullrequest"]
-    matrix_spec: { version: ["3.6"], os-ssl-32: ["rhel87-64"] }
-    display_name: "${version} ${os-ssl-32}"
-    tasks:
-      - name: ".test !.enterprise-auth !.snappy !.zstd"
-
-  - matrix_name: "tests-windows-36-with-zlib-support"
-    matrix_spec: { version: ["3.6"], os-ssl-32: ["windows-64"] }
-    display_name: "${version} ${os-ssl-32}"
-    tasks:
-      - name: ".test !.enterprise-auth !.snappy !.zstd"
-
   - matrix_name: "tests-rhel-40-with-snappy-support"
     tags: ["pullrequest"]
     matrix_spec: { version: ["4.0"], os-ssl-40: ["rhel87-64"] }

README.md

@@ -19,7 +19,7 @@ See the following resources to learn more about upgrading from version 1.x to 2.
 
 - Go 1.18 or higher. We aim to support the latest versions of Go.
 - Go 1.22 or higher is required to run the driver test suite.
-- MongoDB 3.6 and higher.
+- MongoDB 4.0 and higher.
 
 ## Installation
 

internal/driverutil/description.go

@@ -21,7 +21,7 @@ import (
 )
 
 const (
-	MinWireVersion = 6
+	MinWireVersion = 7
 	MaxWireVersion = 25
 )
 

internal/integration/causal_consistency_test.go

@@ -201,40 +201,6 @@ func TestCausalConsistency_Supported(t *testing.T) {
 	})
 }
 
-func TestCausalConsistency_NotSupported(t *testing.T) {
-	// use RunOnBlock instead of mtest.NewOptions().MaxServerVersion("3.4").Topologies(mtest.Single) because
-	// these tests should be run on servers <= 3.4 OR standalones
-	rob := []mtest.RunOnBlock{
-		{MaxServerVersion: "3.4"},
-		{Topology: []mtest.TopologyKind{mtest.Single}},
-	}
-	mt := mtest.New(t, mtest.NewOptions().RunOn(rob...).CreateClient(false))
-
-	mt.Run("afterClusterTime not included", func(mt *mtest.T) {
-		// a read in a causally consistent session does not include afterClusterTime in a deployment that does not
-		// support cluster times
-
-		sessOpts := options.Session().SetCausalConsistency(true)
-		_ = mt.Client.UseSessionWithOptions(context.Background(), sessOpts, func(ctx context.Context) error {
-			_, _ = mt.Coll.Find(ctx, bson.D{})
-			return nil
-		})
-
-		evt := mt.GetStartedEvent()
-		assert.Equal(mt, "find", evt.CommandName, "expected command 'find', got '%v'", evt.CommandName)
-		checkOperationTime(mt, evt.Command, false)
-	})
-	mt.Run("clusterTime not included", func(mt *mtest.T) {
-		// $clusterTime should not be included in commands if the deployment does not support cluster times
-
-		_ = mt.Coll.FindOne(context.Background(), bson.D{})
-		evt := mt.GetStartedEvent()
-		assert.Equal(mt, "find", evt.CommandName, "expected command 'find', got '%v'", evt.CommandName)
-		_, err := evt.Command.LookupErr("$clusterTime")
-		assert.NotNil(mt, err, "expected $clusterTime to not be sent, but was")
-	})
-}
-
 func checkOperationTime(mt *mtest.T, cmd bson.Raw, shouldInclude bool) {
 	mt.Helper()
 

internal/integration/index_view_test.go

@@ -528,11 +528,6 @@ func TestIndexView(t *testing.T) {
 					Unique:             nil,
 				},
 			}
-			if mtest.CompareServerVersions(mtest.ServerVersion(), "3.4") < 0 {
-				for _, expectedSpec := range expectedSpecs {
-					expectedSpec.Version = 1
-				}
-			}
 
 			specs, err := mt.Coll.Indexes().ListSpecifications(context.Background())
 			assert.Nil(mt, err, "ListSpecifications error: %v", err)

mongo/bulk_write_models.go

@@ -70,12 +70,13 @@ func (dom *DeleteOneModel) SetCollation(collation *options.Collation) *DeleteOne
 	return dom
 }
 
-// SetHint specifies the index to use for the operation. This should either be the index name as a string or the index
-// specification as a document. This option is only valid for MongoDB versions >= 4.4. Server versions >= 3.4 will
-// return an error if this option is specified. For server versions < 3.4, the driver will return a client-side error if
-// this option is specified. The driver will return an error if this option is specified during an unacknowledged write
-// operation. The driver will return an error if the hint parameter is a multi-key map. The default value is nil, which
-// means that no hint will be sent.
+// SetHint specifies the index to use for the operation. This should either be
+// the index name as a string or the index specification as a document. This
+// option is only valid for MongoDB versions >= 4.4. Server versions < 4.4 will
+// return an error if this option is specified. The driver will return an error
+// if this option is specified during an unacknowledged write operation. The
+// driver will return an error if the hint parameter is a multi-key map. The
+// default value is nil, which means that no hint will be sent.
 func (dom *DeleteOneModel) SetHint(hint interface{}) *DeleteOneModel {
 	dom.Hint = hint
 	return dom
@@ -111,12 +112,13 @@ func (dmm *DeleteManyModel) SetCollation(collation *options.Collation) *DeleteMa
 	return dmm
 }
 
-// SetHint specifies the index to use for the operation. This should either be the index name as a string or the index
-// specification as a document. This option is only valid for MongoDB versions >= 4.4. Server versions >= 3.4 will
-// return an error if this option is specified. For server versions < 3.4, the driver will return a client-side error if
-// this option is specified. The driver will return an error if this option is specified during an unacknowledged write
-// operation. The driver will return an error if the hint parameter is a multi-key map. The default value is nil, which
-// means that no hint will be sent.
+// SetHint specifies the index to use for the operation. This should either be
+// the index name as a string or the index specification as a document. This
+// option is only valid for MongoDB versions >= 4.4. Server versions < 4.4 will
+// return an error if this option is specified. The driver will return an error
+// if this option is specified during an unacknowledged write operation. The
+// driver will return an error if the hint parameter is a multi-key map. The
+// default value is nil, which means that no hint will be sent.
 func (dmm *DeleteManyModel) SetHint(hint interface{}) *DeleteManyModel {
 	dmm.Hint = hint
 	return dmm
@@ -141,12 +143,13 @@ func NewReplaceOneModel() *ReplaceOneModel {
 	return &ReplaceOneModel{}
 }
 
-// SetHint specifies the index to use for the operation. This should either be the index name as a string or the index
-// specification as a document. This option is only valid for MongoDB versions >= 4.2. Server versions >= 3.4 will
-// return an error if this option is specified. For server versions < 3.4, the driver will return a client-side error if
-// this option is specified. The driver will return an error if this option is specified during an unacknowledged write
-// operation. The driver will return an error if the hint parameter is a multi-key map. The default value is nil, which
-// means that no hint will be sent.
+// SetHint specifies the index to use for the operation. This should either be
+// the index name as a string or the index specification as a document. This
+// option is only valid for MongoDB versions >= 4.2. Server versions < 4.2 will
+// return an error if this option is specified. The driver will return an error
+// if this option is specified during an unacknowledged write operation. The
+// driver will return an error if the hint parameter is a multi-key map. The
+// default value is nil, which means that no hint will be sent.
 func (rom *ReplaceOneModel) SetHint(hint interface{}) *ReplaceOneModel {
 	rom.Hint = hint
 	return rom
@@ -210,12 +213,13 @@ func NewUpdateOneModel() *UpdateOneModel {
 	return &UpdateOneModel{}
 }
 
-// SetHint specifies the index to use for the operation. This should either be the index name as a string or the index
-// specification as a document. This option is only valid for MongoDB versions >= 4.2. Server versions >= 3.4 will
-// return an error if this option is specified. For server versions < 3.4, the driver will return a client-side error if
-// this option is specified. The driver will return an error if this option is specified during an unacknowledged write
-// operation. The driver will return an error if the hint parameter is a multi-key map. The default value is nil, which
-// means that no hint will be sent.
+// SetHint specifies the index to use for the operation. This should either be
+// the index name as a string or the index specification as a document. This
+// option is only valid for MongoDB versions >= 4.2. Server versions < 4.2 will
+// return an error if this option is specified. The driver will return an error
+// if this option is specified during an unacknowledged write operation. The
+// driver will return an error if the hint parameter is a multi-key map. The
+// default value is nil, which means that no hint will be sent.
 func (uom *UpdateOneModel) SetHint(hint interface{}) *UpdateOneModel {
 	uom.Hint = hint
 	return uom
@@ -285,12 +289,13 @@ func NewUpdateManyModel() *UpdateManyModel {
 	return &UpdateManyModel{}
 }
 
-// SetHint specifies the index to use for the operation. This should either be the index name as a string or the index
-// specification as a document. This option is only valid for MongoDB versions >= 4.2. Server versions >= 3.4 will
-// return an error if this option is specified. For server versions < 3.4, the driver will return a client-side error if
-// this option is specified. The driver will return an error if this option is specified during an unacknowledged write
-// operation. The driver will return an error if the hint parameter is a multi-key map. The default value is nil, which
-// means that no hint will be sent.
+// SetHint specifies the index to use for the operation. This should either be
+// the index name as a string or the index specification as a document. This
+// option is only valid for MongoDB versions >= 4.2. Server versions < 4.2 will
+// return an error if this option is specified. The driver will return an error
+// if this option is specified during an unacknowledged write operation. The
+// driver will return an error if the hint parameter is a multi-key map. The
+// default value is nil, which means that no hint will be sent.
 func (umm *UpdateManyModel) SetHint(hint interface{}) *UpdateManyModel {
 	umm.Hint = hint
 	return umm

mongo/database.go

@@ -115,8 +115,7 @@ func (db *Database) Collection(name string, opts ...options.Lister[options.Colle
 	return newCollection(db, name, opts...)
 }
 
-// Aggregate executes an aggregate command the database. This requires MongoDB version >= 3.6 and driver version >=
-// 1.1.0.
+// Aggregate executes an aggregate command the database.
 //
 // The pipeline parameter must be a slice of documents, each representing an aggregation stage. The pipeline
 // cannot be nil but can be empty. The stage documents must all be non-nil. For a pipeline of bson.D documents, the
@@ -873,8 +872,7 @@ func (db *Database) createCollectionOperation(
 }
 
 // CreateView executes a create command to explicitly create a view on the server. See
-// https://www.mongodb.com/docs/manual/core/views/ for more information about views. This method requires driver version >=
-// 1.4.0 and MongoDB version >= 3.4.
+// https://www.mongodb.com/docs/manual/core/views/ for more information about views.
 //
 // The viewName parameter specifies the name of the view to create.
 //

mongo/options/aggregateoptions.go

@@ -70,8 +70,7 @@ func (ao *AggregateOptionsBuilder) SetBatchSize(i int32) *AggregateOptionsBuilde
 }
 
 // SetBypassDocumentValidation sets the value for the BypassDocumentValidation field. If true, writes
-// executed as part of the operation will opt out of document-level validation on the server. This
-// option is valid for MongoDB versions >= 3.2 and is ignored for previous server versions. The default value
+// executed as part of the operation will opt out of document-level validation on the server. The default value
 // is false. See https://www.mongodb.com/docs/manual/core/schema-validation/ for more information about
 // document validation.
 func (ao *AggregateOptionsBuilder) SetBypassDocumentValidation(b bool) *AggregateOptionsBuilder {
@@ -84,9 +83,8 @@ func (ao *AggregateOptionsBuilder) SetBypassDocumentValidation(b bool) *Aggregat
 	return ao
 }
 
-// SetCollation sets the value for the Collation field. Specifies a collation to use for string
-// comparisons during the operation. This option is only valid for MongoDB versions >= 3.4. For previous
-// server versions, the driver will return an error if this option is used. The default value is nil,
+// SetCollation sets the value for the Collation field. Specifies a collation to
+// use for string comparisons during the operation. The default value is nil,
 // which means the default collation of the collection will be used.
 func (ao *AggregateOptionsBuilder) SetCollation(c *Collation) *AggregateOptionsBuilder {
 	ao.Opts = append(ao.Opts, func(opts *AggregateOptions) error {
@@ -99,8 +97,7 @@ func (ao *AggregateOptionsBuilder) SetCollation(c *Collation) *AggregateOptionsB
 }
 
 // SetMaxAwaitTime sets the value for the MaxAwaitTime field. Specifies maximum amount of time
-// that the server should wait for new documents to satisfy a tailable cursor query. This option is
-// only valid for MongoDB versions >= 3.2 and is ignored for previous server versions.
+// that the server should wait for new documents to satisfy a tailable cursor query.
 func (ao *AggregateOptionsBuilder) SetMaxAwaitTime(d time.Duration) *AggregateOptionsBuilder {
 	ao.Opts = append(ao.Opts, func(opts *AggregateOptions) error {
 		opts.MaxAwaitTime = &d

mongo/options/bulkwriteoptions.go

@@ -66,8 +66,7 @@ func (b *BulkWriteOptionsBuilder) SetOrdered(ordered bool) *BulkWriteOptionsBuil
 }
 
 // SetBypassDocumentValidation sets the value for the BypassDocumentValidation field. If true, writes
-// executed as part of the operation will opt out of document-level validation on the server. This option
-// is valid for MongoDB versions >= 3.2 and is ignored for previous server versions. The default value is
+// executed as part of the operation will opt out of document-level validation on the server. The default value is
 // false. See https://www.mongodb.com/docs/manual/core/schema-validation/ for more information about document
 // validation.
 func (b *BulkWriteOptionsBuilder) SetBypassDocumentValidation(bypass bool) *BulkWriteOptionsBuilder {

mongo/options/changestreamoptions.go

@@ -57,10 +57,9 @@ func (cso *ChangeStreamOptionsBuilder) SetBatchSize(i int32) *ChangeStreamOption
 	return cso
 }
 
-// SetCollation sets the value for the Collation field. Specifies a collation to use for string comparisons
-// during the operation. This option is only valid for MongoDB versions >= 3.4. For previous server versions,
-// the driver will return an error if this option is used. The default value is nil, which means the default
-// collation of the collection will be used.
+// SetCollation sets the value for the Collation field. Specifies a collation to
+// use for string comparisons during the operation. The default value is nil,
+// which means the default collation of the collection will be used.
 func (cso *ChangeStreamOptionsBuilder) SetCollation(c Collation) *ChangeStreamOptionsBuilder {
 	cso.Opts = append(cso.Opts, func(opts *ChangeStreamOptions) error {
 		opts.Collation = &c

mongo/options/clientoptions.go

@@ -662,9 +662,9 @@ func (c *ClientOptions) SetAuth(auth Credential) *ClientOptions {
 
 // SetCompressors sets the compressors that can be used when communicating with a server. Valid values are:
 //
-// 1. "snappy" - requires server version >= 3.4
+// 1. "snappy"
 //
-// 2. "zlib" - requires server version >= 3.6
+// 2. "zlib"
 //
 // 3. "zstd" - requires server version >= 4.2, and driver version >= 1.2.0 with cgo support enabled or driver
 // version >= 1.3.0 without cgo.
@@ -896,9 +896,8 @@ func (c *ClientOptions) SetReplicaSet(s string) *ClientOptions {
 // DeleteManyModel instances to be considered retryable. Unacknowledged writes will not be retried, even if this option
 // is set to true.
 //
-// This option requires server version >= 3.6 and a replica set or sharded cluster and will be ignored for any other
-// cluster type. This can also be set through the "retryWrites" URI option (e.g. "retryWrites=true"). The default is
-// true.
+// This option only works on a replica set or sharded cluster and will be ignored for any other cluster type.
+// This can also be set through the "retryWrites" URI option (e.g. "retryWrites=true"). The default is true.
 func (c *ClientOptions) SetRetryWrites(b bool) *ClientOptions {
 	c.RetryWrites = &b
 
@@ -912,7 +911,7 @@ func (c *ClientOptions) SetRetryWrites(b bool) *ClientOptions {
 // EstimatedDocumentCount, Watch (for Client, Database, and Collection), ListCollections, and ListDatabases. Note that
 // operations run through RunCommand are not retried.
 //
-// This option requires server version >= 3.6 and driver version >= 1.1.0. The default is true.
+// The default is true.
 func (c *ClientOptions) SetRetryReads(b bool) *ClientOptions {
 	c.RetryReads = &b
 

mongo/options/countoptions.go

@@ -35,10 +35,9 @@ func (co *CountOptionsBuilder) List() []func(*CountOptions) error {
 	return co.Opts
 }
 
-// SetCollation sets the value for the Collation field. Specifies a collation to use for string comparisons
-// during the operation. This option is only valid for MongoDB versions >= 3.4. For previous server versions,
-// the driver will return an error if this option is used. The default value is nil, which means the default
-// collation of the collection will be used.
+// SetCollation sets the value for the Collation field. Specifies a collation to
+// use for string comparisons during the operation. The default value is nil,
+// which means the default collation of the collection will be used.
 func (co *CountOptionsBuilder) SetCollation(c *Collation) *CountOptionsBuilder {
 	co.Opts = append(co.Opts, func(opts *CountOptions) error {
 		opts.Collation = c