TRA-3860 create main configmap for agent and tappers (#410)

* WIP

* Update options.go and serializable_regexp.go

* Update go.sum, go.sum, and 4 more files...

* Update go.sum, go.sum, and 4 more files...

* Update config.go and serializable_regexp.go

* Update config.go, config.json, and test.go

* Update tapRunner.go and provider.go

* Update provider.go

* Update tapRunner.go and provider.go

* Update config.json and test.go

* Update contract_validation.go, config.go, and 2 more files...

* Update main.go

* Update rulesHTTP.go

* Update config.go, size_enforcer.go, and 5 more files...

* Update config.go and config.go

Co-authored-by: Rami Berman <rami.berman@up9.com>

shared/consts.go

@@ -6,10 +6,10 @@ const (
 	HostModeEnvVar                   = "HOST_MODE"
 	NodeNameEnvVar                   = "NODE_NAME"
 	TappedAddressesPerNodeDictEnvVar = "TAPPED_ADDRESSES_PER_HOST"
-	MaxEntriesDBSizeBytesEnvVar      = "MAX_ENTRIES_DB_BYTES"
-	RulePolicyPath                   = "/app/enforce-policy/"
-	RulePolicyFileName               = "enforce-policy.yaml"
+	ConfigDirPath                    = "/app/config/"
+	ValidationRulesFileName          = "validation-rules.yaml"
 	ContractFileName                 = "contract-oas.yaml"
+	ConfigFileName                   = "mizu-config.json"
 	GoGCEnvVar                       = "GOGC"
 	DefaultApiServerPort             = 8899
 	DebugModeEnvVar                  = "MIZU_DEBUG"

shared/models.go

@@ -18,6 +18,11 @@ const (
 	WebsocketMessageTypeOutboundLink  WebSocketMessageType = "outboundLink"
 )
 
+type MizuAgentConfig struct {
+	TapTargetRegex SerializableRegexp `yaml:"tapTargetRegex"`
+	MaxDBSizeBytes int64              `yaml:"maxDBSizeBytes"`
+}
+
 type WebSocketMessageMetadata struct {
 	MessageType WebSocketMessageType `json:"messageType,omitempty"`
 }

shared/serializable_regexp.go

@@ -0,0 +1,30 @@
+package shared
+
+import "regexp"
+
+type SerializableRegexp struct {
+	regexp.Regexp
+}
+
+func CompileRegexToSerializableRegexp(expr string) (*SerializableRegexp, error) {
+	re, err := regexp.Compile(expr)
+	if err != nil {
+		return nil, err
+	}
+	return &SerializableRegexp{*re}, nil
+}
+
+// UnmarshalText is by json.Unmarshal.
+func (r *SerializableRegexp) UnmarshalText(text []byte) error {
+	rr, err := CompileRegexToSerializableRegexp(string(text))
+	if err != nil {
+		return err
+	}
+	*r = *rr
+	return nil
+}
+
+// MarshalText is used by json.Marshal.
+func (r *SerializableRegexp) MarshalText() ([]byte, error) {
+	return []byte(r.String()), nil
+}