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-rw-r--r--whisper/filter.go60
-rw-r--r--whisper/filter_test.go149
-rw-r--r--whisper/topic.go42
-rw-r--r--whisper/topic_test.go3
-rw-r--r--whisper/whisper_test.go2
5 files changed, 213 insertions, 43 deletions
diff --git a/whisper/filter.go b/whisper/filter.go
index 8a398ab76..c946d9380 100644
--- a/whisper/filter.go
+++ b/whisper/filter.go
@@ -16,6 +16,66 @@ type Filter struct {
Fn func(msg *Message) // Handler in case of a match
}
+// NewFilterTopics creates a 2D topic array used by whisper.Filter from binary
+// data elements.
+func NewFilterTopics(data ...[][]byte) [][]Topic {
+ filter := make([][]Topic, len(data))
+ for i, condition := range data {
+ // Handle the special case of condition == [[]byte{}]
+ if len(condition) == 1 && len(condition[0]) == 0 {
+ filter[i] = []Topic{}
+ continue
+ }
+ // Otherwise flatten normally
+ filter[i] = NewTopics(condition...)
+ }
+ return filter
+}
+
+// NewFilterTopicsFlat creates a 2D topic array used by whisper.Filter from flat
+// binary data elements.
+func NewFilterTopicsFlat(data ...[]byte) [][]Topic {
+ filter := make([][]Topic, len(data))
+ for i, element := range data {
+ // Only add non-wildcard topics
+ filter[i] = make([]Topic, 0, 1)
+ if len(element) > 0 {
+ filter[i] = append(filter[i], NewTopic(element))
+ }
+ }
+ return filter
+}
+
+// NewFilterTopicsFromStrings creates a 2D topic array used by whisper.Filter
+// from textual data elements.
+func NewFilterTopicsFromStrings(data ...[]string) [][]Topic {
+ filter := make([][]Topic, len(data))
+ for i, condition := range data {
+ // Handle the special case of condition == [""]
+ if len(condition) == 1 && condition[0] == "" {
+ filter[i] = []Topic{}
+ continue
+ }
+ // Otherwise flatten normally
+ filter[i] = NewTopicsFromStrings(condition...)
+ }
+ return filter
+}
+
+// NewFilterTopicsFromStringsFlat creates a 2D topic array used by whisper.Filter from flat
+// binary data elements.
+func NewFilterTopicsFromStringsFlat(data ...string) [][]Topic {
+ filter := make([][]Topic, len(data))
+ for i, element := range data {
+ // Only add non-wildcard topics
+ filter[i] = make([]Topic, 0, 1)
+ if element != "" {
+ filter[i] = append(filter[i], NewTopicFromString(element))
+ }
+ }
+ return filter
+}
+
// filterer is the internal, fully initialized filter ready to match inbound
// messages to a variety of criteria.
type filterer struct {
diff --git a/whisper/filter_test.go b/whisper/filter_test.go
new file mode 100644
index 000000000..ac0ebaba7
--- /dev/null
+++ b/whisper/filter_test.go
@@ -0,0 +1,149 @@
+package whisper
+
+import (
+ "bytes"
+
+ "testing"
+)
+
+var filterTopicsCreationTests = []struct {
+ topics [][]string
+ filter [][][4]byte
+}{
+ { // Simple topic filter
+ topics: [][]string{
+ {"abc", "def", "ghi"},
+ {"def"},
+ {"ghi", "abc"},
+ },
+ filter: [][][4]byte{
+ {{0x4e, 0x03, 0x65, 0x7a}, {0x34, 0x60, 0x7c, 0x9b}, {0x21, 0x41, 0x7d, 0xf9}},
+ {{0x34, 0x60, 0x7c, 0x9b}},
+ {{0x21, 0x41, 0x7d, 0xf9}, {0x4e, 0x03, 0x65, 0x7a}},
+ },
+ },
+ { // Wild-carded topic filter
+ topics: [][]string{
+ {"abc", "def", "ghi"},
+ {},
+ {""},
+ {"def"},
+ },
+ filter: [][][4]byte{
+ {{0x4e, 0x03, 0x65, 0x7a}, {0x34, 0x60, 0x7c, 0x9b}, {0x21, 0x41, 0x7d, 0xf9}},
+ {},
+ {},
+ {{0x34, 0x60, 0x7c, 0x9b}},
+ },
+ },
+}
+
+var filterTopicsCreationFlatTests = []struct {
+ topics []string
+ filter [][][4]byte
+}{
+ { // Simple topic list
+ topics: []string{"abc", "def", "ghi"},
+ filter: [][][4]byte{
+ {{0x4e, 0x03, 0x65, 0x7a}},
+ {{0x34, 0x60, 0x7c, 0x9b}},
+ {{0x21, 0x41, 0x7d, 0xf9}},
+ },
+ },
+ { // Wild-carded topic list
+ topics: []string{"abc", "", "ghi"},
+ filter: [][][4]byte{
+ {{0x4e, 0x03, 0x65, 0x7a}},
+ {},
+ {{0x21, 0x41, 0x7d, 0xf9}},
+ },
+ },
+}
+
+func TestFilterTopicsCreation(t *testing.T) {
+ // Check full filter creation
+ for i, tt := range filterTopicsCreationTests {
+ // Check the textual creation
+ filter := NewFilterTopicsFromStrings(tt.topics...)
+ if len(filter) != len(tt.topics) {
+ t.Errorf("test %d: condition count mismatch: have %v, want %v", i, len(filter), len(tt.topics))
+ continue
+ }
+ for j, condition := range filter {
+ if len(condition) != len(tt.filter[j]) {
+ t.Errorf("test %d, condition %d: size mismatch: have %v, want %v", i, j, len(condition), len(tt.filter[j]))
+ continue
+ }
+ for k := 0; k < len(condition); k++ {
+ if bytes.Compare(condition[k][:], tt.filter[j][k][:]) != 0 {
+ t.Errorf("test %d, condition %d, segment %d: filter mismatch: have 0x%x, want 0x%x", i, j, k, condition[k], tt.filter[j][k])
+ }
+ }
+ }
+ // Check the binary creation
+ binary := make([][][]byte, len(tt.topics))
+ for j, condition := range tt.topics {
+ binary[j] = make([][]byte, len(condition))
+ for k, segment := range condition {
+ binary[j][k] = []byte(segment)
+ }
+ }
+ filter = NewFilterTopics(binary...)
+ if len(filter) != len(tt.topics) {
+ t.Errorf("test %d: condition count mismatch: have %v, want %v", i, len(filter), len(tt.topics))
+ continue
+ }
+ for j, condition := range filter {
+ if len(condition) != len(tt.filter[j]) {
+ t.Errorf("test %d, condition %d: size mismatch: have %v, want %v", i, j, len(condition), len(tt.filter[j]))
+ continue
+ }
+ for k := 0; k < len(condition); k++ {
+ if bytes.Compare(condition[k][:], tt.filter[j][k][:]) != 0 {
+ t.Errorf("test %d, condition %d, segment %d: filter mismatch: have 0x%x, want 0x%x", i, j, k, condition[k], tt.filter[j][k])
+ }
+ }
+ }
+ }
+ // Check flat filter creation
+ for i, tt := range filterTopicsCreationFlatTests {
+ // Check the textual creation
+ filter := NewFilterTopicsFromStringsFlat(tt.topics...)
+ if len(filter) != len(tt.topics) {
+ t.Errorf("test %d: condition count mismatch: have %v, want %v", i, len(filter), len(tt.topics))
+ continue
+ }
+ for j, condition := range filter {
+ if len(condition) != len(tt.filter[j]) {
+ t.Errorf("test %d, condition %d: size mismatch: have %v, want %v", i, j, len(condition), len(tt.filter[j]))
+ continue
+ }
+ for k := 0; k < len(condition); k++ {
+ if bytes.Compare(condition[k][:], tt.filter[j][k][:]) != 0 {
+ t.Errorf("test %d, condition %d, segment %d: filter mismatch: have 0x%x, want 0x%x", i, j, k, condition[k], tt.filter[j][k])
+ }
+ }
+ }
+ // Check the binary creation
+ binary := make([][]byte, len(tt.topics))
+ for j, topic := range tt.topics {
+ binary[j] = []byte(topic)
+ }
+ filter = NewFilterTopicsFlat(binary...)
+ if len(filter) != len(tt.topics) {
+ t.Errorf("test %d: condition count mismatch: have %v, want %v", i, len(filter), len(tt.topics))
+ continue
+ }
+ for j, condition := range filter {
+ if len(condition) != len(tt.filter[j]) {
+ t.Errorf("test %d, condition %d: size mismatch: have %v, want %v", i, j, len(condition), len(tt.filter[j]))
+ continue
+ }
+ for k := 0; k < len(condition); k++ {
+ if bytes.Compare(condition[k][:], tt.filter[j][k][:]) != 0 {
+ t.Errorf("test %d, condition %d, segment %d: filter mismatch: have 0x%x, want 0x%x", i, j, k, condition[k], tt.filter[j][k])
+ }
+ }
+ }
+ }
+}
diff --git a/whisper/topic.go b/whisper/topic.go
index b2a264e29..c47c94ae1 100644
--- a/whisper/topic.go
+++ b/whisper/topic.go
@@ -11,6 +11,8 @@ import "github.com/ethereum/go-ethereum/crypto"
type Topic [4]byte
// NewTopic creates a topic from the 4 byte prefix of the SHA3 hash of the data.
+//
+// Note, empty topics are considered the wildcard, and cannot be used in messages.
func NewTopic(data []byte) Topic {
prefix := [4]byte{}
copy(prefix[:], crypto.Sha3(data)[:4])
@@ -27,26 +29,6 @@ func NewTopics(data ...[]byte) []Topic {
return topics
}
-// NewTopicFilter creates a 2D topic array used by whisper.Filter from binary
-// data elements.
-func NewTopicFilter(data ...[][]byte) [][]Topic {
- filter := make([][]Topic, len(data))
- for i, condition := range data {
- filter[i] = NewTopics(condition...)
- }
- return filter
-}
-
-// NewTopicFilterFlat creates a 2D topic array used by whisper.Filter from flat
-// binary data elements.
-func NewTopicFilterFlat(data ...[]byte) [][]Topic {
- filter := make([][]Topic, len(data))
- for i, element := range data {
- filter[i] = []Topic{NewTopic(element)}
- }
- return filter
-}
-
// NewTopicFromString creates a topic using the binary data contents of the
// specified string.
func NewTopicFromString(data string) Topic {
@@ -63,26 +45,6 @@ func NewTopicsFromStrings(data ...string) []Topic {
return topics
}
-// NewTopicFilterFromStrings creates a 2D topic array used by whisper.Filter
-// from textual data elements.
-func NewTopicFilterFromStrings(data ...[]string) [][]Topic {
- filter := make([][]Topic, len(data))
- for i, condition := range data {
- filter[i] = NewTopicsFromStrings(condition...)
- }
- return filter
-}
-
-// NewTopicFilterFromStringsFlat creates a 2D topic array used by whisper.Filter from flat
-// binary data elements.
-func NewTopicFilterFromStringsFlat(data ...string) [][]Topic {
- filter := make([][]Topic, len(data))
- for i, element := range data {
- filter[i] = []Topic{NewTopicFromString(element)}
- }
- return filter
-}
-
// String converts a topic byte array to a string representation.
func (self *Topic) String() string {
return string(self[:])
diff --git a/whisper/topic_test.go b/whisper/topic_test.go
index 22ee06096..976f3e88d 100644
--- a/whisper/topic_test.go
+++ b/whisper/topic_test.go
@@ -9,9 +9,8 @@ var topicCreationTests = []struct {
data []byte
hash [4]byte
}{
- {hash: [4]byte{0xc5, 0xd2, 0x46, 0x01}, data: nil},
- {hash: [4]byte{0xc5, 0xd2, 0x46, 0x01}, data: []byte{}},
{hash: [4]byte{0x8f, 0x9a, 0x2b, 0x7d}, data: []byte("test name")},
+ {hash: [4]byte{0xf2, 0x6e, 0x77, 0x79}, data: []byte("some other test")},
}
func TestTopicCreation(t *testing.T) {
diff --git a/whisper/whisper_test.go b/whisper/whisper_test.go
index 8fce0e036..7c5067f51 100644
--- a/whisper/whisper_test.go
+++ b/whisper/whisper_test.go
@@ -129,7 +129,7 @@ func testBroadcast(anonymous bool, t *testing.T) {
dones[i] = done
targets[i].Watch(Filter{
- Topics: NewTopicFilterFromStrings([]string{"broadcast topic"}),
+ Topics: NewFilterTopicsFromStringsFlat("broadcast topic"),
Fn: func(msg *Message) {
close(done)
},
generated by cgit (git 2.34.1) at 2024-11-14 08:47:41 +0800