Files
go-simple-graphql/query.go
T
2023-04-08 20:45:05 +01:00

140 lines
3.3 KiB
Go

package gql
import (
"context"
"fmt"
"strconv"
"github.com/gookit/goutil/strutil"
"github.com/lukaszraczylo/go-simple-graphql/utils/helpers"
jsoniter "github.com/json-iterator/go"
)
var json = jsoniter.ConfigCompatibleWithStandardLibrary
func (c *BaseClient) convertToJson(v any) []byte {
json, err := json.Marshal(v)
if err != nil {
c.Logger.Error(c, "Can't convert to json;", "error", err.Error())
return nil
}
return json
}
func (c *BaseClient) NewQuery(q ...any) *Query {
query := &Query{}
if len(q) > 0 {
for _, v := range q {
switch val := v.(type) {
case string:
query.query = val
case map[string]interface{}:
query.variables = val
case context.Context:
query.context = val
}
}
}
query.compiledQuery = c.convertToJson(request{
Query: query.query,
Variables: query.variables,
})
c.Logger.Debug(c, "Clearing previously prepared variables and query")
query.variables = nil
if query.context == nil {
query.context = context.Background()
}
if c.validate {
c.Logger.Warn(c, "Validating query is not active")
}
query.query = ""
c.Logger.Debug(c, "Query prepared;", "query", helpers.BytesToString(query.compiledQuery))
return query
}
// Query is a function that sends a query to the server
// It takes 3 arguments:
// 1. queryContent: the query string
// 2. queryVariables: the variables for the query
// 3. queryHeaders: the headers for the query
// It looks a bit weird because of the backward compatibility
func (c *BaseClient) Query(queryContent string, queryVariables interface{}, queryHeaders map[string]interface{}) (any, error) {
compiledQuery := c.NewQuery(queryContent, queryVariables)
parseQueryHeaders, enabledCache, headersModified := c.parseQueryHeaders(queryHeaders)
var should_cache bool
var queryHash string
if headersModified {
should_cache = enabledCache
} else {
should_cache = c.cache.enabled
}
if should_cache {
queryHash = strutil.Md5(fmt.Sprintf("%s-%+v", compiledQuery.compiledQuery, queryHeaders))
}
q := &queryExecutor{
client: c,
query: compiledQuery.compiledQuery,
headers: parseQueryHeaders,
context: context.Background(),
should_cache: should_cache,
hash: queryHash,
}
q.execute()
defer q.done()
return q.result.data, q.result.errors
}
func (c *BaseClient) decodeResponse(jsonData []byte) any {
switch c.responseType {
case "mapstring":
var response map[string]interface{}
err := json.Unmarshal(jsonData, &response)
if err != nil {
c.Logger.Error(c, "Error while converting to map[string]interface{};", "error", err.Error())
return nil
}
return response
case "string":
return helpers.BytesToString(jsonData)
case "byte":
return jsonData
default:
c.Logger.Error(c, "Unknown response type", "response", c.responseType)
return nil
}
}
func (c *BaseClient) parseQueryHeaders(queryHeaders map[string]interface{}) (returnHeaders map[string]interface{}, cache_enabled bool, headers_modified bool) {
returnHeaders = make(map[string]interface{})
for k, v := range queryHeaders {
if k == "gqlcache" {
cache_enabled, _ = strconv.ParseBool(fmt.Sprintf("%v", v))
headers_modified = true
continue
}
if k == "gqlretries" {
c.retries.enabled, _ = strconv.ParseBool(fmt.Sprintf("%v", v))
continue
}
returnHeaders[k] = v
}
return returnHeaders, cache_enabled, headers_modified
}