Add initial Grid Schema protos

Signed-off-by: Andrea Gunderson <agunde@bitwise.io>

sdk/protos/schema_payload.proto

@@ -0,0 +1,52 @@
+// Copyright 2019 Cargill Incorporated
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// -----------------------------------------------------------------------------
+
+syntax = "proto3";
+
+import "schema_state.proto";
+
+message SchemaPayload {
+    enum Action {
+        UNSET_ACTION = 0;
+        SCHEMA_CREATE = 1;
+        SCHEMA_UPDATE = 2;
+    }
+
+    Action action = 1;
+
+    // The smart contract will read from just one of these fields
+    // according to the Action. Only one of these should be set and must match
+    // the corresponding Action.
+    SchemaCreateAction schema_create = 2;
+    SchemaUpdateAction schema_update = 3;
+}
+
+// SchemaCreateAction adds a new Schema to state.
+message SchemaCreateAction {
+    // The name of the Schema.  This is also the unique identifier for the
+    // new Schema.
+    string schema_name = 1;
+     // An optional description of the schema.
+    string description = 2;
+    // The property definitions that make up the Schema; must not be empty.
+    repeated PropertyDefinition properties = 10;
+}
+
+message SchemaUpdateAction {
+    // The name of the Schema to be updated.
+    string schema_name = 1;
+    // The property definitions to be added to the Schema; must not be empty.
+    repeated PropertyDefinition properties = 2;
+}

sdk/protos/schema_state.proto

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+// Copyright 2019 Cargill Incorporated
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// -----------------------------------------------------------------------------
+
+syntax = "proto3";
+
+message PropertyDefinition {
+    enum DataType {
+        UNSET_DATA_TYPE = 0;
+        BYTES = 1;
+        BOOLEAN = 2;
+        NUMBER = 3;
+        STRING = 4;
+        ENUM = 5;
+        STRUCT = 6;
+    }
+    // The name of the property
+    string name = 1;
+    // The data type of the value; must not be set to UNSET_DATA_TYPE.
+    DataType data_type = 2;
+    // Indicates that this is a required property in the Schema
+    bool required = 3;
+    // An optional description of the field.
+    string description = 4;
+    // The exponent for a NUMBER property
+    sint32 number_exponent = 10;
+    // The list of values for an ENUM property; must not be empty/ for
+    // properties of that type.
+    repeated string enum_options = 11;
+    // The list of property definitions for a STRUCT property; must  not be
+    // empty for properties of that type.
+    repeated PropertyDefinition struct_properties = 12;
+}
+
+message Schema {
+    // The name of the Schema.  This is also the unique identifier for the
+    // Schema.
+    string name = 1;
+    // An optional description of the schema.
+    string description = 2;
+    // The Pike organization that has rights to modify the schema.
+    string owner = 3;
+    // The property definitions that make up the Schema; must not be empty.
+    repeated PropertyDefinition properties = 10;
+}
+
+message PropertyValue {
+    // The name of the property value.  Used to validate the property against a
+    // Schema.
+    string name = 1;
+    // The data type of the property.  Indicates which value field the actual
+    // value may be found.  Must not be set to `UNSET_DATA_TYPE`.
+    PropertyDefinition.DataType data_type = 2;
+    // The value fields for the possible data types.  Only one of these will
+    // contain a value, determined by the value of `data_type`
+    bytes bytes_value = 10;
+    bool boolean_value = 11;
+    sint64 number_value = 12;
+    string string_value = 13;
+    uint32 enum_value = 14;
+    repeated PropertyValue struct_values = 15;
+}