Merge pull request #3 from Bytom/dev

[bytom/bytom-node-sdk.git] / src / errors.js

diff --git a/src/errors.js b/src/errors.js
new file mode 100644 (file)
index 0000000..4ea645b
--- /dev/null
+++ b/src/errors.js
@@ -0,0 +1,60 @@
+const lib = {
+  create: function(type, message, props = {}) {
+    let err
+    if (props.body) {
+      err = lib.newBatchError(props.body, props.requestId)
+    } else {
+      err = new Error(message)
+    }
+
+    err = Object.assign(err, props, {
+      bytomClientError: true,
+      type: type,
+    })
+    return err
+  },
+
+  isbytomError: function(err) {
+    return err && !!err.bytomClientError
+  },
+
+  isBatchError: function (v) {
+    return v && v.code && !v.stack
+  },
+
+  newBatchError: function (body, requestId = false) {
+    let err = new Error(lib.formatErrMsg(body, requestId))
+    err.code = body.code
+    err.bytomMessage = body.msg
+    err.detail = body.error_detail
+    return err
+  },
+
+  formatErrMsg: function(body) {
+    let tokens = []
+
+    if (typeof body.code === 'string' && body.code.length > 0) {
+      tokens.push('Code: ' + body.code)
+    }
+
+    tokens.push('Message: ' + body.msg)
+
+    if (typeof body.error_detail === 'string' && body.error_detail.length > 0) {
+      tokens.push('Detail: ' + body.error_detail)
+    }
+
+    return tokens.join(' ')
+  },
+
+  types: {
+    FETCH: 'FETCH',
+    CONNECTIVITY: 'CONNECTIVITY',
+    JSON: 'JSON',
+    UNAUTHORIZED: 'UNAUTHORIZED',
+    NOT_FOUND: 'NOT_FOUND',
+    BAD_REQUEST: 'BAD_REQUEST',
+    SERVER_ERROR: 'SERVER_ERROR',
+  }
+}
+
+module.exports = lib