Merge pull request #3648 from swagger-api/ft/oas3-tio

OAS3: Try-It-Out

package.json

@@ -75,7 +75,7 @@
     "scroll-to-element": "^2.0.0",
     "serialize-error": "2.0.0",
     "shallowequal": "0.2.2",
-    "swagger-client": "3.0.20",
+    "swagger-client": "swagger-api/swagger-js#ft/oas3-tio",
     "url-parse": "^1.1.8",
     "whatwg-fetch": "0.11.1",
     "worker-loader": "^0.7.1",

src/core/components/layouts/base.jsx

@@ -8,6 +8,8 @@ export default class BaseLayout extends React.Component {
     errActions: PropTypes.object.isRequired,
     specActions: PropTypes.object.isRequired,
     specSelectors: PropTypes.object.isRequired,
+    oas3Selectors: PropTypes.object.isRequired,
+    oas3Actions: PropTypes.object.isRequired,
     layoutSelectors: PropTypes.object.isRequired,
     layoutActions: PropTypes.object.isRequired,
     getComponent: PropTypes.func.isRequired
@@ -19,7 +21,14 @@ export default class BaseLayout extends React.Component {
   }
 
   render() {
-    let { specSelectors, specActions, getComponent, layoutSelectors } = this.props
+    let {
+      specSelectors,
+      specActions,
+      getComponent,
+      layoutSelectors,
+      oas3Selectors,
+      oas3Actions
+    } = this.props
 
     let info = specSelectors.info()
     let url = specSelectors.url()
@@ -28,6 +37,7 @@ export default class BaseLayout extends React.Component {
     let securityDefinitions = specSelectors.securityDefinitions()
     let externalDocs = specSelectors.externalDocs()
     let schemes = specSelectors.schemes()
+    let servers = specSelectors.servers()
 
     let Info = getComponent("info")
     let Operations = getComponent("operations", true)
@@ -35,6 +45,7 @@ export default class BaseLayout extends React.Component {
     let AuthorizeBtn = getComponent("authorizeBtn", true)
     let Row = getComponent("Row")
     let Col = getComponent("Col")
+    let Servers = getComponent("Servers")
     let Errors = getComponent("errors", true)
 
     let isLoading = specSelectors.loadingStatus() === "loading"
@@ -82,6 +93,22 @@ export default class BaseLayout extends React.Component {
               </div>
             ) : null }
 
+            { servers && servers.size ? (
+              <div className="server-container">
+                <Col className="servers wrapper" mobile={12}>
+                  <Servers
+                    servers={servers}
+                    currentServer={oas3Selectors.selectedServer()}
+                    setSelectedServer={oas3Actions.setSelectedServer}
+                    setServerVariableValue={oas3Actions.setServerVariableValue}
+                    getServerVariable={oas3Selectors.serverVariableValue}
+                    getEffectiveServerValue={oas3Selectors.serverEffectiveValue}
+                    />
+                </Col>
+              </div>
+
+            ) : null}
+
             {
               filter === null || filter === false ? null :
                 <div className="filter-container">

src/core/plugins/oas3/actions.js

@@ -0,0 +1,35 @@
+// Actions conform to FSA (flux-standard-actions)
+// {type: string,payload: Any|Error, meta: obj, error: bool}
+
+export const UPDATE_SELECTED_SERVER = "oas3_set_servers"
+export const UPDATE_REQUEST_BODY_VALUE = "oas3_set_request_body_value"
+export const UPDATE_REQUEST_CONTENT_TYPE = "oas3_set_request_content_type"
+export const UPDATE_SERVER_VARIABLE_VALUE = "oas3_set_server_variable_value"
+
+export function setSelectedServer (selectedServerUrl) {
+  return {
+    type: UPDATE_SELECTED_SERVER,
+    payload: selectedServerUrl
+  }
+}
+
+export function setRequestBodyValue ({ value, pathMethod }) {
+  return {
+    type: UPDATE_REQUEST_BODY_VALUE,
+    payload: { value, pathMethod }
+  }
+}
+
+export function setRequestContentType ({ value, pathMethod }) {
+  return {
+    type: UPDATE_REQUEST_CONTENT_TYPE,
+    payload: { value, pathMethod }
+  }
+}
+
+export function setServerVariableValue ({ server, key, val }) {
+  return {
+    type: UPDATE_SERVER_VARIABLE_VALUE,
+    payload: { server, key, val }
+  }
+}

src/core/plugins/oas3/components/index.js

@@ -1,9 +1,13 @@
 import Callbacks from "./callbacks"
 import RequestBody from "./request-body"
 import OperationLink from "./operation-link.jsx"
+import Servers from "./servers"
+import RequestBodyEditor from "./request-body-editor"
 
 export default {
   Callbacks,
   RequestBody,
+  Servers,
+  RequestBodyEditor,
   operationLink: OperationLink
 }

src/core/plugins/oas3/components/request-body-editor.jsx

@@ -0,0 +1,114 @@
+import React, { PureComponent } from "react"
+import PropTypes from "prop-types"
+import { fromJS } from "immutable"
+import { getSampleSchema } from "core/utils"
+
+const NOOP = Function.prototype
+
+export default class RequestBodyEditor extends PureComponent {
+
+  static propTypes = {
+    requestBody: PropTypes.object.isRequired,
+    mediaType: PropTypes.string.isRequired,
+    onChange: PropTypes.func,
+    getComponent: PropTypes.func.isRequired,
+    isExecute: PropTypes.bool,
+    specSelectors: PropTypes.object.isRequired,
+  };
+
+  static defaultProps = {
+    mediaType: "application/json",
+    requestBody: fromJS({}),
+    onChange: NOOP,
+  };
+
+  constructor(props, context) {
+    super(props, context)
+
+    this.state = {
+      isEditBox: false,
+      value: ""
+    }
+  }
+
+  componentDidMount() {
+    this.setValueToSample.call(this)
+  }
+
+  componentWillReceiveProps(nextProps) {
+    if(this.props.mediaType !== nextProps.mediaType) {
+      // media type was changed
+      this.setValueToSample(nextProps.mediaType)
+    }
+
+    if(!this.props.isExecute && nextProps.isExecute) {
+      // we just entered execute mode,
+      // so enable editing for convenience
+      this.setState({ isEditBox: true })
+    }
+  }
+
+  setValueToSample = (explicitMediaType) => {
+    this.onChange(this.sample(explicitMediaType))
+  }
+
+  sample = (explicitMediaType) => {
+    let { requestBody, mediaType } = this.props
+    let schema = requestBody.getIn(["content", explicitMediaType || mediaType, "schema"]).toJS()
+
+    return getSampleSchema(schema, explicitMediaType || mediaType, {
+      includeWriteOnly: true
+    })
+  }
+
+  onChange = (value) => {
+    this.setState({value})
+    this.props.onChange(value)
+  }
+
+  handleOnChange = e => {
+    const { mediaType } = this.props
+    const isJson = /json/i.test(mediaType)
+    const inputValue = isJson ? e.target.value.trim() : e.target.value
+
+    this.onChange(inputValue)
+  }
+
+  toggleIsEditBox = () => this.setState( state => ({isEditBox: !state.isEditBox}))
+
+  render() {
+    let {
+      isExecute,
+      getComponent,
+    } = this.props
+
+    const Button = getComponent("Button")
+    const TextArea = getComponent("TextArea")
+    const HighlightCode = getComponent("highlightCode")
+
+    let { value, isEditBox } = this.state
+
+    return (
+      <div className="body-param">
+        {
+          isEditBox && isExecute
+            ? <TextArea className={"body-param__text"} value={value} onChange={ this.handleOnChange }/>
+            : (value && <HighlightCode className="body-param__example"
+                               value={ value }/>)
+        }
+        <div className="body-param-options">
+          {
+            !isExecute ? null
+                       : <div className="body-param-edit">
+                        <Button className={isEditBox ? "btn cancel body-param__example-edit" : "btn edit body-param__example-edit"}
+                                 onClick={this.toggleIsEditBox}>{ isEditBox ? "Cancel" : "Edit"}
+                         </Button>
+                         </div>
+          }
+        </div>
+
+      </div>
+    )
+
+  }
+}

src/core/plugins/oas3/components/request-body.jsx

@@ -2,13 +2,18 @@ import React from "react"
 import PropTypes from "prop-types"
 import ImPropTypes from "react-immutable-proptypes"
 import { OrderedMap } from "immutable"
-import { getSampleSchema } from "core/utils"
 
-
-const RequestBody = ({ requestBody, getComponent, specSelectors, contentType }) => {
+const RequestBody = ({
+  requestBody,
+  getComponent,
+  specSelectors,
+  contentType,
+  isExecute,
+  onChange
+}) => {
   const Markdown = getComponent("Markdown")
   const ModelExample = getComponent("modelExample")
-  const HighlightCode = getComponent("highlightCode")
+  const RequestBodyEditor = getComponent("RequestBodyEditor")
 
   const requestBodyDescription = (requestBody && requestBody.get("description")) || null
   const requestBodyContent = (requestBody && requestBody.get("content")) || new OrderedMap()
@@ -16,10 +21,6 @@ const RequestBody = ({ requestBody, getComponent, specSelectors, contentType })
 
   const mediaTypeValue = requestBodyContent.get(contentType)
 
-  const sampleSchema = getSampleSchema(mediaTypeValue.get("schema").toJS(), contentType, {
-    includeWriteOnly: true
-  })
-
   return <div>
     { requestBodyDescription &&
       <Markdown source={requestBodyDescription} />
@@ -28,8 +29,16 @@ const RequestBody = ({ requestBody, getComponent, specSelectors, contentType })
       getComponent={ getComponent }
       specSelectors={ specSelectors }
       expandDepth={1}
+      isExecute={isExecute}
       schema={mediaTypeValue.get("schema")}
-      example={<HighlightCode value={sampleSchema} />}
+      example={<RequestBodyEditor
+        requestBody={requestBody}
+        onChange={onChange}
+        mediaType={contentType}
+        getComponent={getComponent}
+        isExecute={isExecute}
+        specSelectors={specSelectors}
+        />}
       />
   </div>
 }
@@ -38,7 +47,9 @@ RequestBody.propTypes = {
   requestBody: ImPropTypes.orderedMap.isRequired,
   getComponent: PropTypes.func.isRequired,
   specSelectors: PropTypes.object.isRequired,
-  contentType: PropTypes.string.isRequired
+  contentType: PropTypes.string.isRequired,
+  isExecute: PropTypes.bool.isRequired,
+  onChange: PropTypes.func.isRequired
 }
 
 export default RequestBody

src/core/plugins/oas3/components/servers.jsx

@@ -0,0 +1,155 @@
+import React from "react"
+import { OrderedMap } from "immutable"
+import PropTypes from "prop-types"
+import ImPropTypes from "react-immutable-proptypes"
+
+export default class Servers extends React.Component {
+
+  static propTypes = {
+    servers: ImPropTypes.list.isRequired,
+    currentServer: PropTypes.string.isRequired,
+    setSelectedServer: PropTypes.func.isRequired,
+    setServerVariableValue: PropTypes.func.isRequired,
+    getServerVariable: PropTypes.func.isRequired,
+    getEffectiveServerValue: PropTypes.func.isRequired
+  }
+
+  componentDidMount() {
+    let { servers } = this.props
+
+    //fire 'change' event to set default 'value' of select
+    this.setServer(servers.first().get("url"))
+  }
+
+  componentWillReceiveProps(nextProps) {
+    let {
+      servers,
+      setServerVariableValue,
+      getServerVariable
+    } = this.props
+
+    if(this.props.currentServer !== nextProps.currentServer) {
+      // Server has changed, we may need to set default values
+      let currentServerDefinition = servers
+        .find(v => v.get("url") === nextProps.currentServer) || OrderedMap()
+
+      let currentServerVariableDefs = currentServerDefinition.get("variables") || OrderedMap()
+
+      currentServerVariableDefs.map((val, key) => {
+        let currentValue = getServerVariable(nextProps.currentServer, key)
+        // only set the default value if the user hasn't set one yet
+        if(!currentValue) {
+          setServerVariableValue({
+            server: nextProps.currentServer,
+            key,
+            val: val.get("default") || ""
+          })
+        }
+      })
+    }
+  }
+
+  onServerChange =( e ) => {
+    this.setServer( e.target.value )
+
+    // set default variable values
+  }
+
+  onServerVariableValueChange = ( e ) => {
+    let {
+      setServerVariableValue,
+      currentServer
+    } = this.props
+
+    let variableName = e.target.getAttribute("data-variable")
+    let newVariableValue = e.target.value
+
+    if(typeof setServerVariableValue === "function") {
+      setServerVariableValue({
+        server: currentServer,
+        key: variableName,
+        val: newVariableValue
+      })
+    }
+  }
+
+  setServer = ( value ) => {
+    let { setSelectedServer } = this.props
+
+    setSelectedServer(value)
+  }
+
+  render() {
+    let { servers,
+      currentServer,
+      getServerVariable,
+      getEffectiveServerValue
+    } = this.props
+
+    let currentServerDefinition = servers.find(v => v.get("url") === currentServer) || OrderedMap()
+
+    let currentServerVariableDefs = currentServerDefinition.get("variables") || OrderedMap()
+
+    let shouldShowVariableUI = currentServerVariableDefs.size !== 0
+
+    return (
+      <div>
+        <label htmlFor="servers">
+          <span className="servers-title">Servers</span>
+          <select onChange={ this.onServerChange }>
+            { servers.valueSeq().map(
+              ( server ) =>
+              <option
+                value={ server.get("url") }
+                key={ server.get("url") }>
+                { server.get("url") }
+              </option>
+            ).toArray()}
+          </select>
+        </label>
+        { shouldShowVariableUI ?
+          <div>
+          <h4>Server variables</h4>
+            <div className={"computed-url"}>
+              Computed URL:
+              <code>
+                {getEffectiveServerValue(currentServer)}
+              </code>
+            </div>
+            <table>
+              <tbody>
+                {
+                  currentServerVariableDefs.map((val, name) => {
+                    return <tr key={name}>
+                      <td>{name}</td>
+                      <td>
+                        { val.get("enum") ?
+                          <select data-variable={name} onChange={this.onServerVariableValueChange}>
+                            {val.get("enum").map(enumValue => {
+                              return <option
+                                selected={enumValue === getServerVariable(currentServer, name)}
+                                key={enumValue}
+                                value={enumValue}>
+                                {enumValue}
+                              </option>
+                            })}
+                          </select> :
+                          <input
+                            type={"text"}
+                            value={getServerVariable(currentServer, name) || ""}
+                            onChange={this.onServerVariableValueChange}
+                            data-variable={name}
+                            ></input>
+                        }
+                      </td>
+                    </tr>
+                  })
+                }
+              </tbody>
+            </table>
+          </div>: null
+        }
+      </div>
+    )
+  }
+}

src/core/plugins/oas3/index.js

@@ -1,8 +1,12 @@
 // import reducers from "./reducers"
 // import * as actions from "./actions"
-import * as wrapSelectors from "./wrap-selectors"
+import * as specWrapSelectors from "./spec-extensions/wrap-selectors"
+import * as specSelectors from "./spec-extensions/selectors"
 import components from "./components"
 import wrapComponents from "./wrap-components"
+import * as oas3Actions from "./actions"
+import * as oas3Selectors from "./selectors"
+import oas3Reducers from "./reducers"
 
 export default function() {
   return {
@@ -10,7 +14,13 @@ export default function() {
     wrapComponents,
     statePlugins: {
       spec: {
-        wrapSelectors
+        wrapSelectors: specWrapSelectors,
+        selectors: specSelectors
+      },
+      oas3: {
+        actions: oas3Actions,
+        reducers: oas3Reducers,
+        selectors: oas3Selectors,
       }
     }
   }

src/core/plugins/oas3/reducers.js

@@ -0,0 +1,23 @@
+import {
+  UPDATE_SELECTED_SERVER,
+  UPDATE_REQUEST_BODY_VALUE,
+  UPDATE_REQUEST_CONTENT_TYPE,
+  UPDATE_SERVER_VARIABLE_VALUE
+} from "./actions"
+
+export default {
+  [UPDATE_SELECTED_SERVER]: (state, { payload: selectedServerUrl } ) =>{
+    return state.setIn( [ "selectedServer" ], selectedServerUrl)
+  },
+  [UPDATE_REQUEST_BODY_VALUE]: (state, { payload: { value, pathMethod } } ) =>{
+    let [path, method] = pathMethod
+    return state.setIn( [ "requestData", path, method, "bodyValue" ], value)
+  },
+  [UPDATE_REQUEST_CONTENT_TYPE]: (state, { payload: { value, pathMethod } } ) =>{
+    let [path, method] = pathMethod
+    return state.setIn( [ "requestData", path, method, "requestContentType" ], value)
+  },
+  [UPDATE_SERVER_VARIABLE_VALUE]: (state, { payload: { server, key, val } } ) =>{
+    return state.setIn( [ "serverVariableValues", server, key ], val)
+  },
+}

src/core/plugins/oas3/selectors.js

@@ -0,0 +1,53 @@
+import { OrderedMap } from "immutable"
+import { isOAS3 as isOAS3Helper } from "./helpers"
+
+
+// Helpers
+
+function onlyOAS3(selector) {
+  return (...args) => (system) => {
+    const spec = system.getSystem().specSelectors.specJson()
+    if(isOAS3Helper(spec)) {
+      return selector(...args)
+    } else {
+      return null
+    }
+  }
+}
+
+export const selectedServer = onlyOAS3(state => {
+    return state.getIn(["selectedServer"]) || ""
+  }
+)
+
+export const requestBodyValue = onlyOAS3((state, path, method) => {
+    return state.getIn(["requestData", path, method, "bodyValue"]) || null
+  }
+)
+
+export const requestContentType = onlyOAS3((state, path, method) => {
+    return state.getIn(["requestData", path, method, "requestContentType"]) || null
+  }
+)
+
+export const serverVariableValue = onlyOAS3((state, server, key) => {
+    return state.getIn(["serverVariableValues", server, key]) || null
+  }
+)
+
+export const serverVariables = onlyOAS3((state, server) => {
+    return state.getIn(["serverVariableValues", server]) || OrderedMap()
+  }
+)
+
+export const serverEffectiveValue = onlyOAS3((state, server) => {
+    let varValues = state.getIn(["serverVariableValues", server]) || OrderedMap()
+    let str = server
+
+    varValues.map((val, key) => {
+      str = str.replace(new RegExp(`{${key}}`, "g"), val)
+    })
+
+    return str
+  }
+)

src/core/plugins/oas3/spec-extensions/selectors.js

@@ -0,0 +1,50 @@
+import { createSelector } from "reselect"
+import { Map } from "immutable"
+import { isOAS3 as isOAS3Helper, isSwagger2 as isSwagger2Helper } from "../helpers"
+
+
+// Helpers
+
+function onlyOAS3(selector) {
+  return () => (system, ...args) => {
+    const spec = system.getSystem().specSelectors.specJson()
+    if(isOAS3Helper(spec)) {
+      return selector(...args)
+    } else {
+      return null
+    }
+  }
+}
+
+const state = state => {
+  return state || Map()
+}
+
+const specJson = createSelector(
+  state,
+  spec => spec.get("json", Map())
+)
+
+const specResolved = createSelector(
+  state,
+  spec => spec.get("resolved", Map())
+)
+
+const spec = state => {
+  let res = specResolved(state)
+  if(res.count() < 1)
+    res = specJson(state)
+  return res
+}
+
+// New selectors
+
+export const servers = onlyOAS3(createSelector(
+  spec,
+  spec => spec.getIn(["servers"]) || Map()
+))
+
+export const isSwagger2 = (ori, system) => () => {
+  const spec = system.getSystem().specSelectors.specJson()
+  return isSwagger2Helper(spec)
+}

src/core/plugins/oas3/spec-extensions/wrap-selectors.js

@@ -1,6 +1,6 @@
 import { createSelector } from "reselect"
 import { Map } from "immutable"
-import { isOAS3 as isOAS3Helper, isSwagger2 as isSwagger2Helper } from "./helpers"
+import { isOAS3 as isOAS3Helper, isSwagger2 as isSwagger2Helper } from "../helpers"
 
 
 // Helpers
@@ -56,6 +56,11 @@ export const schemes = OAS3NullSelector
 
 // New selectors
 
+export const servers = onlyOAS3(createSelector(
+  spec,
+  spec => spec.getIn(["servers"]) || Map()
+))
+
 export const isOAS3 = (ori, system) => () => {
   const spec = system.getSystem().specSelectors.specJson()
   return isOAS3Helper(spec)

src/core/plugins/oas3/wrap-components/index.js

@@ -3,7 +3,6 @@ import parameters from "./parameters"
 import VersionStamp from "./version-stamp"
 import OnlineValidatorBadge from "./online-validator-badge"
 import Model from "./model"
-import TryItOutButton from "./try-it-out-button"
 
 export default {
   Markdown,
@@ -11,5 +10,4 @@ export default {
   VersionStamp,
   model: Model,
   onlineValidatorBadge: OnlineValidatorBadge,
-  TryItOutButton
 }

src/core/plugins/oas3/wrap-components/parameters.jsx

@@ -13,8 +13,7 @@ class Parameters extends Component {
    super(props)
    this.state = {
      callbackVisible: false,
-     parametersVisible: true,
-     requestBodyContentType: ""
+     parametersVisible: true
    }
  }
 
@@ -24,6 +23,8 @@ class Parameters extends Component {
     operation: PropTypes.object.isRequired,
     getComponent: PropTypes.func.isRequired,
     specSelectors: PropTypes.object.isRequired,
+    oas3Actions: PropTypes.object.isRequired,
+    oas3Selectors: PropTypes.object.isRequired,
     fn: PropTypes.object.isRequired,
     tryItOutEnabled: PropTypes.bool,
     allowTryItOut: PropTypes.bool,
@@ -86,6 +87,8 @@ class Parameters extends Component {
       fn,
       getComponent,
       specSelectors,
+      oas3Actions,
+      oas3Selectors,
       pathMethod,
       operation
     } = this.props
@@ -159,16 +162,22 @@ class Parameters extends Component {
               <h4 className={`opblock-title parameter__name ${requestBody.get("required") && "required"}`}>Request body</h4>
               <label>
                 <ContentType
-                  value={this.state.requestBodyContentType}
+                  value={oas3Selectors.requestContentType(...pathMethod)}
                   contentTypes={ requestBody.get("content").keySeq() }
-                  onChange={(val) => this.setState({ requestBodyContentType: val })}
+                  onChange={(value) => {
+                    oas3Actions.setRequestContentType({ value, pathMethod })
+                  }}
                   className="body-param-content-type" />
               </label>
             </div>
             <div className="opblock-description-wrapper">
               <RequestBody
                 requestBody={requestBody}
-                contentType={this.state.requestBodyContentType}/>
+                isExecute={isExecute}
+                onChange={(value) => {
+                  oas3Actions.setRequestBodyValue({ value, pathMethod })
+                }}
+                contentType={oas3Selectors.requestContentType(...pathMethod)}/>
             </div>
           </div>
         }

src/core/plugins/oas3/wrap-components/try-it-out-button.jsx

@@ -1,5 +0,0 @@
-import { OAS3ComponentWrapFactory } from "../helpers"
-
-export default OAS3ComponentWrapFactory(() => {
-  return null
-})

src/core/plugins/spec/actions.js

@@ -1,6 +1,7 @@
 import YAML from "js-yaml"
 import parseUrl from "url-parse"
 import serializeError from "serialize-error"
+import { isJSONObject } from "core/utils"
 
 // Actions conform to FSA (flux-standard-actions)
 // {type: string,payload: Any|Error, meta: obj, error: bool}
@@ -195,48 +196,67 @@ export const logRequest = (req) => {
 
 // Actually fire the request via fn.execute
 // (For debugging) and ease of testing
-export const executeRequest = (req) => ({fn, specActions, specSelectors, getConfigs}) => {
-  let { pathName, method, operation } = req
-  let { requestInterceptor, responseInterceptor } = getConfigs()
+export const executeRequest = (req) =>
+  ({fn, specActions, specSelectors, getConfigs, oas3Selectors}) => {
+    let { pathName, method, operation } = req
+    let { requestInterceptor, responseInterceptor } = getConfigs()
 
-  let op = operation.toJS()
+    let op = operation.toJS()
 
-  // if url is relative, parseUrl makes it absolute by inferring from `window.location`
-  req.contextUrl = parseUrl(specSelectors.url()).toString()
+    // if url is relative, parseUrl makes it absolute by inferring from `window.location`
+    req.contextUrl = parseUrl(specSelectors.url()).toString()
 
 
-  if(op && op.operationId) {
-    req.operationId = op.operationId
-  } else if(op && pathName && method) {
-    req.operationId = fn.opId(op, pathName, method)
+    if(op && op.operationId) {
+      req.operationId = op.operationId
+    } else if(op && pathName && method) {
+      req.operationId = fn.opId(op, pathName, method)
+    }
+
+    if(specSelectors.isOAS3()) {
+      // OAS3 request feature support
+      req.server = oas3Selectors.selectedServer()
+      req.serverVariables = oas3Selectors.serverVariables(req.server).toJS()
+      req.requestContentType = oas3Selectors.requestContentType(pathName, method)
+      const requestBody = oas3Selectors.requestBodyValue(pathName, method)
+
+      if(isJSONObject(requestBody)) {
+        req.requestBody = JSON.parse(requestBody)
+      } else {
+        req.requestBody = requestBody
+      }
+    }
+
+    let parsedRequest = Object.assign({}, req)
+    parsedRequest = fn.buildRequest(parsedRequest)
+
+    specActions.setRequest(req.pathName, req.method, parsedRequest)
+
+    let requestInterceptorWrapper = function(r) {
+      let mutatedRequest = requestInterceptor.apply(this, [r])
+      let parsedMutatedRequest = Object.assign({}, mutatedRequest)
+      specActions.setMutatedRequest(req.pathName, req.method, parsedMutatedRequest)
+      return mutatedRequest
+    }
+
+    req.requestInterceptor = requestInterceptorWrapper
+    req.responseInterceptor = responseInterceptor
+
+    // track duration of request
+    const startTime = Date.now()
+
+    return fn.execute(req)
+    .then( res => {
+      res.duration = Date.now() - startTime
+      specActions.setResponse(req.pathName, req.method, res)
+    } )
+    .catch(
+      err => specActions.setResponse(req.pathName, req.method, {
+        error: true, err: serializeError(err)
+      })
+    )
   }
 
-  let parsedRequest = Object.assign({}, req)
-  parsedRequest = fn.buildRequest(parsedRequest)
-
-  specActions.setRequest(req.pathName, req.method, parsedRequest)
-
-  let requestInterceptorWrapper = function(r) {
-    let mutatedRequest = requestInterceptor.apply(this, [r])
-    let parsedMutatedRequest = Object.assign({}, mutatedRequest)
-    specActions.setMutatedRequest(req.pathName, req.method, parsedMutatedRequest)
-    return mutatedRequest
-  }
-
-  req.requestInterceptor = requestInterceptorWrapper
-  req.responseInterceptor = responseInterceptor
-
-  // track duration of request
-  const startTime = Date.now()
-
-  return fn.execute(req)
-  .then( res => {
-    res.duration = Date.now() - startTime
-    specActions.setResponse(req.pathName, req.method, res)
-  } )
-  .catch( err => specActions.setResponse(req.pathName, req.method, { error: true, err: serializeError(err) } ) )
-}
-
 
 // I'm using extras as a way to inject properties into the final, `execute` method - It's not great. Anyone have a better idea? @ponelat
 export const execute = ( { path, method, ...extras }={} ) => (system) => {

src/core/utils.js

@@ -13,6 +13,25 @@ const DEFAULT_REPONSE_KEY = "default"
 
 export const isImmutable = (maybe) => Im.Iterable.isIterable(maybe)
 
+export function isJSONObject (str) {
+  try {
+    var o = JSON.parse(str)
+
+    // Handle non-exception-throwing cases:
+    // Neither JSON.parse(false) or JSON.parse(1234) throw errors, hence the type-checking,
+    // but... JSON.parse(null) returns null, and typeof null === "object",
+    // so we must check for that, too. Thankfully, null is falsey, so this suffices:
+    if (o && typeof o === "object") {
+      return o
+    }
+  }
+  catch (e) {
+    // do nothing
+  }
+
+  return false
+}
+
 export function objectify (thing) {
   if(!isObject(thing))
     return {}

src/style/_layout.scss

@@ -636,6 +636,77 @@
     }
 }
 
+.server-container
+{
+    margin: 0 0 20px 0;
+    padding: 30px 0;
+
+    background: #fff;
+    box-shadow: 0 1px 2px 0 rgba(0,0,0,.15);
+
+    .computed-url {
+      margin: 2em 0;
+
+      code {
+        color: grey;
+        display: inline-block;
+        padding: 4px;
+        font-size: 16px;
+        margin: 0 1em;
+        font-style: italic;
+      }
+    }
+
+    .servers
+    {
+        display: flex;
+        align-items: center;
+
+        .servers-title {
+          margin-right: 1em;
+        }
+
+         > label
+        {
+            font-size: 12px;
+
+            display: flex;
+            flex-direction: column;
+
+            margin: -20px 15px 0 0;
+
+            @include text_headline();
+
+            select
+            {
+                min-width: 130px;
+            }
+        }
+
+        table {
+            tr {
+                width: 30em;
+            }
+            td {
+                display: inline-block;
+                max-width: 15em;
+                vertical-align: middle;
+                padding-top: 10px;
+                padding-bottom: 10px;
+
+                &:first-of-type {
+                  padding-right: 2em;
+                }
+
+                input {
+                    width: 100%;
+                    height: 100%;
+                }
+            }
+        }
+    }
+}
+
 
 .loading-container
 {

test/core/plugins/spec/actions.js

@@ -113,7 +113,8 @@ describe("spec plugin - actions", function(){
           spec: () => fromJS({}),
           parameterValues: () => fromJS({}),
           contentTypeValues: () => fromJS({}),
-          url: () => fromJS({})
+          url: () => fromJS({}),
+          isOAS3: () => false
         },
         getConfigs: () => configs
       }