feat: backport basket proto updates

go.mod

@@ -111,7 +111,7 @@ require (
 	github.com/prometheus/procfs v0.6.0 // indirect
 	github.com/rcrowley/go-metrics v0.0.0-20200313005456-10cdbea86bc0 // indirect
 	github.com/regen-network/cosmos-proto v0.3.1 // indirect
-	github.com/regen-network/regen-ledger/api v0.3.0 // indirect
+	github.com/regen-network/regen-ledger/api v0.4.0 // indirect
 	github.com/regen-network/regen-ledger/orm v1.0.0-beta1 // indirect
 	github.com/rs/cors v1.7.0 // indirect
 	github.com/sasha-s/go-deadlock v0.2.1-0.20190427202633-1595213edefa // indirect

go.sum

@@ -916,8 +916,8 @@ github.com/regen-network/cosmos-sdk v0.44.2-regen-1/go.mod h1:fwQJdw+aECatpTvQTo
 github.com/regen-network/protobuf v1.3.2-alpha.regen.4 h1:c9jEnU+xm6vqyrQe3M94UFWqiXxRIKKnqBOh2EACmBE=
 github.com/regen-network/protobuf v1.3.2-alpha.regen.4/go.mod h1:/J8/bR1T/NXyIdQDLUaq15LjNE83nRzkyrLAMcPewig=
 github.com/regen-network/regen-ledger/api v0.2.0/go.mod h1:kWly2pK0u3fDfyoYYilpEoTEg61pCjV/f5XSY0KzJQY=
-github.com/regen-network/regen-ledger/api v0.3.0 h1:gam9DzeklPi9OySQoS2RIwzQhUBwd5UDK8joe0YqHA4=
-github.com/regen-network/regen-ledger/api v0.3.0/go.mod h1:kWly2pK0u3fDfyoYYilpEoTEg61pCjV/f5XSY0KzJQY=
+github.com/regen-network/regen-ledger/api v0.4.0 h1:klcMljLCHU3MpkRyjrEXL6KKsDGeqFBt2aFUwFdpEH8=
+github.com/regen-network/regen-ledger/api v0.4.0/go.mod h1:kWly2pK0u3fDfyoYYilpEoTEg61pCjV/f5XSY0KzJQY=
 github.com/rjeczalik/notify v0.9.1/go.mod h1:rKwnCoCGeuQnwBtTSPL9Dad03Vh2n40ePRrjvIXnJho=
 github.com/rogpeppe/fastuuid v0.0.0-20150106093220-6724a57986af/go.mod h1:XWv6SoW27p1b0cqNHllgS5HIMJraePCO15w5zCzIWYg=
 github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=

proto/regen/ecocredit/basket/v1/events.proto

@@ -0,0 +1,52 @@
+syntax = "proto3";
+
+package regen.ecocredit.basket.v1;
+
+import "regen/ecocredit/basket/v1/types.proto";
+
+option go_package = "github.com/regen-network/regen-ledger/x/ecocredit/basket";
+
+// EventCreate is an event emitted when a basket is created.
+message EventCreate {
+
+  // basket_denom is the basket bank denom.
+  string basket_denom = 1;
+
+  // curator is the address of the basket curator who is able to change certain
+  // basket settings.
+  string curator = 2;
+}
+
+// EventPut is an event emitted when credits are put into a basket in return
+// for basket tokens.
+message EventPut {
+
+  // owner is the owner of the credits put into the basket.
+  string owner = 1;
+
+  // basket_denom is the basket bank denom that the credits were added to.
+  string basket_denom = 2;
+
+  // credits are the credits that were added to the basket.
+  repeated BasketCredit credits = 3;
+
+  // amount is the integer number of basket tokens converted from credits.
+  string amount = 4;
+}
+
+// EventTake is an event emitted when credits are taken from a basket starting
+// from the oldest credits first.
+message EventTake {
+
+  // owner is the owner of the credits taken from the basket.
+  string owner = 1;
+
+  // basket_denom is the basket bank denom that credits were taken from.
+  string basket_denom = 2;
+
+  // credits are the credits that were taken from the basket.
+  repeated BasketCredit credits = 3;
+
+  // amount is the integer number of basket tokens converted to credits.
+  string amount = 4;
+}

proto/regen/ecocredit/basket/v1/query.proto

@@ -0,0 +1,97 @@
+syntax = "proto3";
+
+package regen.ecocredit.basket.v1;
+
+import "google/api/annotations.proto";
+import "regen/ecocredit/basket/v1/state.proto";
+import "cosmos/base/query/v1beta1/pagination.proto";
+
+option go_package = "github.com/regen-network/regen-ledger/x/ecocredit/basket";
+
+// Msg is the regen.ecocredit.basket.v1beta1 Query service.
+service Query {
+
+    // Basket queries one basket by denom.
+    rpc Basket(QueryBasketRequest) returns (QueryBasketResponse) {
+        option (google.api.http).get =
+            "/regen/ecocredit/basket/v1/baskets/{basket_denom}";
+    }
+
+    // Baskets lists all baskets in the ecocredit module.
+    rpc Baskets(QueryBasketsRequest) returns (QueryBasketsResponse) {
+        option (google.api.http).get =
+            "/regen/ecocredit/basket/v1/baskets";
+    }
+
+    // BasketBalances lists the balance of each credit batch in the basket.
+    rpc BasketBalances(QueryBasketBalancesRequest) returns (QueryBasketBalancesResponse) {
+        option (google.api.http).get =
+            "/regen/ecocredit/basket/v1/baskets/{basket_denom}/balances";
+    }
+
+    // BasketBalance queries the balance of a specific credit batch in the basket.
+    rpc BasketBalance(QueryBasketBalanceRequest) returns (QueryBasketBalanceResponse) {
+        option (google.api.http).get =
+            "/regen/ecocredit/basket/v1/baskets/{basket_denom}/balances/{batch_denom}";
+    }
+}
+
+// QueryBasketRequest is the Query/Basket request type.
+message QueryBasketRequest {
+    // basket_denom represents the denom of the basket to query.
+    string basket_denom = 1;
+}
+
+// QueryBasketResponse is the Query/Basket response type.
+message QueryBasketResponse {
+    // basket is the queried basket.
+    Basket basket = 1;
+}
+
+// QueryBasketsRequest is the Query/Baskets request type.
+message QueryBasketsRequest {
+    // pagination defines an optional pagination for the request.
+    cosmos.base.query.v1beta1.PageRequest pagination = 1;
+}
+
+// QueryBasketsResponse is the Query/Baskets response type.
+message QueryBasketsResponse {
+    // baskets are the fetched baskets.
+    repeated Basket baskets = 1;
+
+    // pagination defines the pagination in the response.
+    cosmos.base.query.v1beta1.PageResponse pagination = 2;
+}
+
+// QueryBasketBalancesRequest is the Query/BasketBalances request type.
+message QueryBasketBalancesRequest {
+    // basket_denom is the denom of the basket.
+    string basket_denom = 1;
+
+    // pagination defines an optional pagination for the request.
+    cosmos.base.query.v1beta1.PageRequest pagination = 2;
+}
+
+// QueryBasketBalancesResponse is the Query/BasketBalances response type.
+message QueryBasketBalancesResponse {
+    // balances is a list of credit balances in the basket.
+    repeated BasketBalance balances = 1;
+
+    // pagination defines the pagination in the response.
+    cosmos.base.query.v1beta1.PageResponse pagination = 2;
+}
+
+// QueryBasketBalanceRequest is the Query/BasketBalance request type.
+message QueryBasketBalanceRequest {
+    // basket_denom is the denom of the basket.
+    string basket_denom = 1;
+
+    // batch_denom is the denom of the credit batch.
+    string batch_denom = 2;
+}
+
+// QueryBasketBalanceResponse is the Query/BasketBalance response type.
+message QueryBasketBalanceResponse {
+    // balance is the amount of the queried credit batch in the basket.
+    string balance = 1;
+}

proto/regen/ecocredit/basket/v1/tx.proto

@@ -28,45 +28,59 @@ message MsgCreate {
   // basket settings.
   string curator = 1;
 
-  // name will be used to create a bank denom for this basket token.
+  // name will be used to together with prefix to create a bank denom for this
+  // basket token. It can be between 3-8 alphanumeric characters, with the
+  // first character being alphabetic. The bank denom will be
+  // `eco/<prefix><name>` and its display name will be `eco/<name>`.
   string name = 2;
 
-  // display_name will be used to create a bank Metadata display name for this
-  // basket token.
-  string display_name = 3;
+  // prefix is a single alphabetic character that denotes
+  // the denom prefix and indicates in some way what relationship is between
+  // the denom and display denom. Standard conventions are that m indicates
+  // milli (10^3), u indicates micro (10^6), n indicates nano (10^9).
+  // Typical usage of prefix should correspond with the `exponent` field, 
+  // which is used to convert decimal ecocredit amounts to integral
+  // basket tokens.
+  string prefix = 3;
+
+  // description is a human-readable description of the basket denom that should
+  // be at most 256 characters.
+  string description = 4;
+
 
   // exponent is the exponent that will be used for converting credits to basket
   // tokens and for bank denom metadata. It also limits the precision of
   // credit amounts when putting credits into a basket. An exponent of 6 will
-  // mean that 10^6 units of a basket token will be issued for 1.0 credits and
-  // that this should be displayed as one unit in user interfaces. It also means
+  // mean that 10^6 units of a basket token will be issued for 1.0 credits and that
+  // this should be displayed as one unit in user interfaces. It also means
   // that the maximum precision of credit amounts is 6 decimal places so that
   // the need to round is eliminated. The exponent must be >= the precision of
   // the credit type at the time the basket is created.
-  uint32 exponent = 4;
+  uint32 exponent = 5;
 
   // disable_auto_retire allows auto-retirement to be disabled.
   // The credits will be auto-retired if disable_auto_retire is
   // false unless the credits were previously put into the basket by the
   // address picking them from the basket, in which case they will remain
   // tradable.
-  bool disable_auto_retire = 5;
+  bool disable_auto_retire = 6;
 
-  // credit_type_name filters against credits from this credit type name.
-  string credit_type_name = 6;
+  // credit_type_abbrev is the abbreviation of the credit type this basket is
+  // able to hold.
+  string credit_type_abbrev = 7;
 
   // allowed_classes are the credit classes allowed to be put in the basket
-  repeated string allowed_classes = 7;
+  repeated string allowed_classes = 8;
 
   // date_criteria is the date criteria for batches admitted to the basket.
-  DateCriteria date_criteria = 8;
+  DateCriteria date_criteria = 9;
 
   // fee is the fee that the curator will pay to create the basket. It must be
   // >= the required Params.basket_creation_fee. We include the fee explicitly
   // here so that the curator explicitly acknowledges paying this fee and
   // is not surprised to learn that the paid a big fee and didn't know
   // beforehand.
-  repeated cosmos.base.v1beta1.Coin fee = 9 [
+  repeated cosmos.base.v1beta1.Coin fee = 10 [
     (gogoproto.nullable) = false,
     (gogoproto.castrepeated) = "github.com/cosmos/cosmos-sdk/types.Coins"
   ];
@@ -108,7 +122,7 @@ message MsgTake {
   // owner is the owner of the basket tokens.
   string owner = 1;
 
-  // basket_denom is the basket denom to take credits from.
+  // basket_denom is the basket bank denom to take credits from.
   string basket_denom = 2;
 
   // amount is the integer number of basket tokens to convert into credits.

proto/regen/ecocredit/basket/v1/types.proto

@@ -31,8 +31,7 @@ message DateCriteria {
     // start_date_window is a duration of time measured into the past which sets
     // a cutoff for batch start dates when adding new credits to the basket.
     // Based on the current block timestamp, credits whose start date is before
-    // `block_timestamp - batch_date_window` will not be allowed into the
-    // basket.
+    // `block_timestamp - batch_date_window` will not be allowed into the basket.
     google.protobuf.Duration start_date_window = 2;
   }
-}
+}

x/ecocredit/basket/msg_create.go

@@ -1,6 +1,9 @@
 package basket
 
 import (
+	"fmt"
+	"regexp"
+
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
 	"github.com/cosmos/cosmos-sdk/x/auth/legacy/legacytx"
@@ -12,39 +15,37 @@ var (
 	_ legacytx.LegacyMsg = &MsgCreate{}
 )
 
-const nameMaxLen = 32
-const displayNameMinLen = 3
-const displayNameMaxLen = 32
-const exponentMax = 32
-const creditNameMaxLen = 32
+const nameMinLen = 3
+const nameMaxLen = 8
+const descrMaxLen = 200
+const creditTypeAbbrMaxLen = 3
 
 var errBadReq = sdkerrors.ErrInvalidRequest
 
+// first character must be alphabetic, the rest can be alphanumeric. We reduce length constraints by one to account for
+// the first character being forced to alphabetic.
+var reName = regexp.MustCompile(fmt.Sprintf("^[[:alpha:]][[:alnum:]]{%d,%d}$", nameMinLen-1, nameMaxLen-1))
+
 // ValidateBasic does a stateless sanity check on the provided data.
 func (m MsgCreate) ValidateBasic() error {
 	if _, err := sdk.AccAddressFromBech32(m.Curator); err != nil {
 		return sdkerrors.ErrInvalidAddress.Wrap("malformed curator address " + err.Error())
 	}
-	// TODO: add proper validation once we will have proper requirements.
-	// https://github.com/regen-network/regen-ledger/issues/732
-	if m.Name == "" || len(m.Name) > nameMaxLen {
-		return errBadReq.Wrapf("name must not be empty and must not be longer than %d characters long", nameMaxLen)
-	}
-	if len(m.DisplayName) < displayNameMinLen || len(m.DisplayName) > displayNameMaxLen {
-		return errBadReq.Wrapf("display_name must be between %d and %d characters long", displayNameMinLen, displayNameMaxLen)
+	if !reName.MatchString(m.Name) {
+		return errBadReq.Wrapf("name must start with an alphabetic character, and be between %d and %d alphanumeric characters long", nameMinLen, nameMaxLen)
 	}
-	if m.Exponent > exponentMax {
-		return errBadReq.Wrapf("exponent must not be bigger than %d", exponentMax)
-	}
-	if m.CreditTypeName == "" {
-		return errBadReq.Wrap("credit_type_name must be defined")
+	if _, err := ecocredit.ExponentToPrefix(m.Exponent); err != nil {
+		return err
 	}
-	if len(m.CreditTypeName) > creditNameMaxLen {
-		return errBadReq.Wrapf("credit_type_name must not be longer than %d", creditNameMaxLen)
+	if err := ecocredit.ValidateCreditTypeAbbreviation(m.CreditTypeAbbrev); err != nil {
+		return err
 	}
 	if err := validateDateCriteria(m.DateCriteria); err != nil {
 		return err
 	}
+	if len(m.Description) > descrMaxLen {
+		return errBadReq.Wrapf("description can't be longer than %d characters", descrMaxLen)
+	}
 	if len(m.AllowedClasses) == 0 {
 		return errBadReq.Wrap("allowed_classes is required")
 	}
@@ -56,9 +57,9 @@ func (m MsgCreate) ValidateBasic() error {
 	return m.Fee.Validate()
 }
 
-// ValidateCreateFee additional validation with access to the state data.
+// ValidateMsgCreate additional validation with access to the state data.
 // minFee must be sorted.
-func ValidateCreateFee(m *MsgCreate, minFee sdk.Coins) error {
+func ValidateMsgCreate(m *MsgCreate, minFee sdk.Coins) error {
 	if !m.Fee.IsAllGTE(minFee) {
 		return sdkerrors.ErrInsufficientFee.Wrapf("minimum fee %s, got %s", minFee, m.Fee)
 	}
@@ -100,3 +101,20 @@ func validateDateCriteria(d *DateCriteria) error {
 	}
 	return nil
 }
+
+// MsgCreateDenom formats denom and display denom:
+// * denom: eco.<m.Exponent><m.CreditTypeAbbrev>.<m.Name>
+// * display denom: eco.<m.Exponent><m.CreditTypeAbbrev>.<m.Name>
+// Returns error if MsgCrete.Exponent is not supported
+func MsgCreateDenom(m *MsgCreate) (string, string, error) {
+	const basketDenomPrefix = "eco."
+	denomPrefix, err := ecocredit.ExponentToPrefix(m.Exponent)
+	if err != nil {
+		return "", "", err
+	}
+
+	denomTail := m.CreditTypeAbbrev + "." + m.Name
+	displayDenomName := basketDenomPrefix + denomTail    //
+	denom := basketDenomPrefix + denomPrefix + denomTail // eco.<credit-class>.<name>
+	return denom, displayDenomName, nil
+}