Use metaline to keep the configuration a pure JSON (#39)

* Use metaline for creating mappers Signed-off-by: Matteo Collina <[email protected]> * fixup Signed-off-by: Matteo Collina <[email protected]> * fixup Signed-off-by: Matteo Collina <[email protected]> --------- Signed-off-by: Matteo Collina <[email protected]>
platformatic · Dec 6, 2023 · 2932dcc · 2932dcc
1 parent 00da3d7
commit 2932dcc
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Showing 4 changed files with 359 additions and 5 deletions.
diff --git a/README.md b/README.md
@@ -118,9 +118,7 @@ async function main() {
             // Resolver for retrieving multiple Books.
             resolver: {
               name: 'getBooksByIds',
-              argsAdapter: (partialResults) => {
-                return { ids: partialResults.map(r => r.id) }
-              }
+              argsAdapter: 'ids.$>#id'
             }
           }
         },

diff --git a/lib/composer.js b/lib/composer.js
@@ -6,6 +6,7 @@ const { SubscriptionClient } = require('@mercuriusjs/subscription-client')
 const { getIntrospectionQuery } = require('graphql')
 const fastify = require('fastify')
 const mercurius = require('mercurius')
+const metaline = require('metaline')
 const { createEmptyObject, unwrapSchemaType } = require('./graphql-utils')
 const { fetchSubgraphSchema, makeGraphqlRequest } = require('./network')
 const { QueryBuilder } = require('./query-builder')
@@ -39,10 +40,11 @@ class Composer {
       subgraphs = [],
       onSubgraphError = onError,
       subscriptions,
-      defaultArgsAdapter,
       addEntitiesResolvers
     } = options
 
+    let defaultArgsAdapter = options.defaultArgsAdapter
+
     this.addEntitiesResolvers = !!addEntitiesResolvers
 
     validateString(queryTypeName, 'queryTypeName')
@@ -52,6 +54,9 @@ class Composer {
     validateFunction(onSubgraphError, 'onSubgraphError')
 
     if (defaultArgsAdapter) {
+      if (typeof defaultArgsAdapter === 'string') {
+        defaultArgsAdapter = metaline(defaultArgsAdapter)
+      }
       validateFunction(defaultArgsAdapter, 'defaultArgsAdapter')
     }
 
@@ -122,7 +127,15 @@ class Composer {
               validateString(fkey[p], `subgraphs[${subgraphName}].entities.${name}.fkeys[${k}].${p}`)
             }
             if (fkey.resolver) {
+              if (typeof fkey.resolver.argsAdapter === 'string') {
+                fkey.resolver.argsAdapter = metaline(fkey.resolver.argsAdapter)
+              }
+              if (typeof fkey.resolver.partialResults === 'string') {
+                fkey.resolver.partialResults = metaline(fkey.resolver.partialResults)
+              }
+
               validateResolver(fkey.resolver, `subgraphs[${subgraphName}].entities.${name}.fkeys[${k}].resolver`)
+
               if (!fkey.resolver.argsAdapter) {
                 fkey.resolver.argsAdapter = defaultArgsAdapter ?? createDefaultArgsAdapter(name, fkey.pkey)
               }
@@ -138,6 +151,14 @@ class Composer {
               if (!m[p]) { continue }
               validateString(m[p], `subgraphs[${subgraphName}].entities.${name}.many[${k}].${p}`)
             }
+
+            if (typeof m.resolver.argsAdapter === 'string') {
+              m.resolver.argsAdapter = metaline(m.resolver.argsAdapter)
+            }
+            if (typeof m.resolver.partialResults === 'string') {
+              m.resolver.partialResults = metaline(m.resolver.partialResults)
+            }
+
             validateResolver(m.resolver, `subgraphs[${subgraphName}].entities.${name}.many[${k}].resolver`)
             if (!m.resolver.argsAdapter) {
               m.resolver.argsAdapter = defaultArgsAdapter ?? createDefaultArgsAdapter(name, m.pkey)
@@ -146,7 +167,9 @@ class Composer {
 
           if (resolver) {
             validateResolver(resolver, `subgraphs[${subgraphName}].entities.${name}.resolver`)
-            if (!resolver.argsAdapter) {
+            if (typeof resolver.argsAdapter === 'string') {
+              resolver.argsAdapter = metaline(resolver.argsAdapter)
+            } else if (!resolver.argsAdapter) {
               resolver.argsAdapter = defaultArgsAdapter ?? createDefaultArgsAdapter(name, pkey)
             }
           }

diff --git a/package.json b/package.json
@@ -15,6 +15,7 @@
     "fastify": "^4.24.3",
     "graphql": "^16.8.1",
     "mercurius": "^13.2.2",
+    "metaline": "^1.1.0",
     "undici": "^6.0.0"
   },
   "devDependencies": {