feat!: basket name update

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 v0.4.0 // indirect
+	github.com/regen-network/regen-ledger/api v0.5.0 // 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 v0.4.0 h1:klcMljLCHU3MpkRyjrEXL6KKsDGeqFBt2aFUwFdpEH8=
-github.com/regen-network/regen-ledger/api v0.4.0/go.mod h1:kWly2pK0u3fDfyoYYilpEoTEg61pCjV/f5XSY0KzJQY=
+github.com/regen-network/regen-ledger/api v0.5.0 h1:Kp+16TzHxSeF0pJ1HPcUzhalCKJCkEnfiKj/NoJX6Lw=
+github.com/regen-network/regen-ledger/api v0.5.0/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/tx.proto

@@ -30,23 +30,16 @@ message MsgCreate {
 
   // 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>`.
+  // first character being alphabetic.
+  //
+  // The bank denom will be formed from name, credit type and exponent and be
+  // of the form `eco.<prefix><credit_type_abbrev>.<name>` where prefix
+  // is derived from exponent.
   string name = 2;
 
-  // 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;
-
+  string description = 3;
 
   // 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
@@ -55,32 +48,48 @@ message MsgCreate {
   // 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 = 5;
+  // the credit type at the time the basket is created and be of one of the
+  // following values 0, 1, 2, 3, 6, 9, 12, 15, 18, 21, or 24 which correspond
+  // to the exponents which have an official SI prefix.
+  //
+  // The exponent will be used to form the prefix part of the the bank denom
+  // and will be mapped as follows:
+  //   0 - no prefix
+  //   1 - d (deci)
+  //   2 - c (centi)
+  //   3 - m (milli)
+  //   6 - u (micro)
+  //   9 - n (nano)
+  //   12 - p (pico)
+  //   15 - f (femto)
+  //   18 - a (atto)
+  //   21 - z (zepto)
+  //   24 - y (yocto)
+  uint32 exponent = 4;
 
   // 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 = 6;
+  bool disable_auto_retire = 5;
 
   // credit_type_abbrev is the abbreviation of the credit type this basket is
   // able to hold.
-  string credit_type_abbrev = 7;
+  string credit_type_abbrev = 6;
 
   // allowed_classes are the credit classes allowed to be put in the basket
-  repeated string allowed_classes = 8;
+  repeated string allowed_classes = 7;
 
   // date_criteria is the date criteria for batches admitted to the basket.
-  DateCriteria date_criteria = 9;
+  DateCriteria date_criteria = 8;
 
   // 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 = 10 [
+  repeated cosmos.base.v1beta1.Coin fee = 9 [
     (gogoproto.nullable) = false,
     (gogoproto.castrepeated) = "github.com/cosmos/cosmos-sdk/types.Coins"
   ];

x/ecocredit/basket/msg_create.go

@@ -102,18 +102,18 @@ func validateDateCriteria(d *DateCriteria) error {
 	return nil
 }
 
-// MsgCreateDenom formats denom and display denom:
+// BasketDenom 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) {
+func BasketDenom(name, creditTypeAbbrev string, exponent uint32) (string, string, error) {
 	const basketDenomPrefix = "eco."
-	denomPrefix, err := ecocredit.ExponentToPrefix(m.Exponent)
+	denomPrefix, err := ecocredit.ExponentToPrefix(exponent)
 	if err != nil {
 		return "", "", err
 	}
 
-	denomTail := m.CreditTypeAbbrev + "." + m.Name
+	denomTail := creditTypeAbbrev + "." + name
 	displayDenomName := basketDenomPrefix + denomTail    //
 	denom := basketDenomPrefix + denomPrefix + denomTail // eco.<credit-class>.<name>
 	return denom, displayDenomName, nil

x/ecocredit/basket/msg_create_test.go

@@ -78,15 +78,15 @@ func TestMsgCreateValidateBasic(t *testing.T) {
 			MsgCreate{Curator: a, Name: name, Exponent: 3, CreditTypeAbbrev: creditAbbr, DateCriteria: start, AllowedClasses: []string{"class1", ""}},
 			"allowed_classes[1] must be defined"},
 		{"fee-1",
-			MsgCreate{Curator: a, Prefix: "o", Name: name, Exponent: 3, CreditTypeAbbrev: creditAbbr, DateCriteria: start, AllowedClasses: classes, Fee: sdk.Coins{sdk.Coin{Denom: "1a"}}},
+			MsgCreate{Curator: a, Name: name, Exponent: 3, CreditTypeAbbrev: creditAbbr, DateCriteria: start, AllowedClasses: classes, Fee: sdk.Coins{sdk.Coin{Denom: "1a"}}},
 			"invalid denom"},
-		{"fee-2", MsgCreate{Curator: a, Prefix: "o", Name: name, Exponent: 3, CreditTypeAbbrev: creditAbbr, DateCriteria: start, AllowedClasses: classes, Fee: sdk.Coins{sdk.Coin{"aa", sdk.NewInt(-1)}}},
+		{"fee-2", MsgCreate{Curator: a, Name: name, Exponent: 3, CreditTypeAbbrev: creditAbbr, DateCriteria: start, AllowedClasses: classes, Fee: sdk.Coins{sdk.Coin{"aa", sdk.NewInt(-1)}}},
 			"invalid denom"},
 
 		{"good-1-fees-not-required",
-			MsgCreate{Curator: a, Prefix: "o", Name: name, Exponent: 0, CreditTypeAbbrev: creditAbbr, DateCriteria: start, AllowedClasses: classes, Description: descr}, ""},
+			MsgCreate{Curator: a, Name: name, Exponent: 0, CreditTypeAbbrev: creditAbbr, DateCriteria: start, AllowedClasses: classes, Description: descr}, ""},
 		{"good-date-criteria-not-required",
-			MsgCreate{Curator: a, Prefix: "o", Name: name, Exponent: 18, CreditTypeAbbrev: creditAbbr, DateCriteria: nil, AllowedClasses: classes, Fee: sdk.Coins{sdk.NewInt64Coin("regen", 1)}}, ""},
+			MsgCreate{Curator: a, Name: name, Exponent: 18, CreditTypeAbbrev: creditAbbr, DateCriteria: nil, AllowedClasses: classes, Fee: sdk.Coins{sdk.NewInt64Coin("regen", 1)}}, ""},
 	}
 
 	for _, tc := range tcs {
@@ -146,3 +146,36 @@ func TestMsgCreateSignBytes(t *testing.T) {
 	bz := m.GetSignBytes()
 	require.NotEmpty(t, bz)
 }
+
+func TestBasketDenom(t *testing.T) {
+	tcs := []struct {
+		tname        string
+		abbrev       string
+		exponent     uint32
+		denom        string
+		displayDenom string
+		err          bool
+	}{
+		{"wrong exponent",
+			"X", 5, "", "", true},
+		{"exponent-0",
+			"X", 0, "eco.X.foo", "eco.X.foo", false},
+		{"exponent-1`",
+			"X", 1, "eco.dX.foo", "eco.X.foo", false},
+		{"exponent-2",
+			"X", 2, "eco.cX.foo", "eco.X.foo", false},
+		{"exponent-6",
+			"X", 6, "eco.uX.foo", "eco.X.foo", false},
+	}
+	require := require.New(t)
+	for _, tc := range tcs {
+		d, displayD, err := BasketDenom("foo", tc.abbrev, tc.exponent)
+		if tc.err {
+			require.Error(err, tc.tname)
+		} else {
+			require.NoError(err, tc.tname)
+			require.Equal(tc.denom, d, tc.tname)
+			require.Equal(tc.displayDenom, displayD, tc.tname)
+		}
+	}
+}