com.lahzouz.java.graphql.client.maven.plugin.Introspection.kt Maven / Gradle / Ivy
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Maven plugin for generating graphql clients
package com.lahzouz.java.graphql.client.maven.plugin
import org.apache.http.HttpHeaders
import org.apache.http.client.entity.GzipDecompressingEntity
import org.apache.http.client.methods.HttpPost
import org.apache.http.config.RegistryBuilder
import org.apache.http.conn.socket.ConnectionSocketFactory
import org.apache.http.conn.socket.PlainConnectionSocketFactory
import org.apache.http.conn.ssl.NoopHostnameVerifier
import org.apache.http.conn.ssl.SSLConnectionSocketFactory
import org.apache.http.entity.StringEntity
import org.apache.http.impl.client.HttpClientBuilder
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager
import org.apache.http.ssl.SSLContextBuilder
import org.apache.http.util.EntityUtils
import java.nio.charset.Charset
import java.security.cert.X509Certificate
import javax.net.ssl.SSLContext
object Introspection {
fun getIntrospectionSchema(host: String,
useSelfSignedCertificat: Boolean,
customHeaders: Map): String {
var clientBuilder = HttpClientBuilder.create().disableContentCompression()
if (useSelfSignedCertificat) {
val sslContext: SSLContext = SSLContextBuilder()
.loadTrustMaterial(null) { x509CertChain: Array?, authType: String? -> true }
.build()
clientBuilder = HttpClientBuilder.create()
.setSSLContext(sslContext)
.setConnectionManager(
PoolingHttpClientConnectionManager(
RegistryBuilder.create()
.register("http", PlainConnectionSocketFactory.INSTANCE)
.register("https", SSLConnectionSocketFactory(sslContext,
NoopHostnameVerifier.INSTANCE))
.build()
))
}
val request = HttpPost(host);
val body = StringEntity(introspectionQuery)
request.apply {
entity = body
setHeader(HttpHeaders.ACCEPT, "application/json")
setHeader(HttpHeaders.CONTENT_TYPE, "application/json")
setHeader(HttpHeaders.ACCEPT_ENCODING, "gzip, identity")
setHeader(HttpHeaders.ACCEPT_CHARSET, "utf-8")
setHeader(HttpHeaders.USER_AGENT, "Apollo Client Maven Plugin")
customHeaders.forEach { (name, value) -> setHeader(name, value) }
}
val client = clientBuilder.build()
val response = client.execute(request)
var schema = ""
if (200 == response.statusLine.statusCode) {
var entity = response.entity
val contentEncodingHeader = entity.contentEncoding
if (contentEncodingHeader != null) {
val encodings = contentEncodingHeader.elements
for (i in encodings.indices) {
if (encodings[i].name.equals("gzip", ignoreCase = true)) {
entity = GzipDecompressingEntity(entity)
break
}
}
}
schema = EntityUtils.toString(entity, Charset.forName("utf-8").name())
}
client.close()
return schema
}
private const val rawIntrospectionQuery = "\\n" +
" query IntrospectionQuery {\\n" +
" __schema {\\n" +
" queryType { name }\\n" +
" mutationType { name }\\n" +
" subscriptionType { name }\\n" +
" types {\\n" +
" ...FullType\\n" +
" }\\n" +
" directives {\\n" +
" name\\n" +
" description\\n" +
" locations\\n" +
" args {\\n" +
" ...InputValue\\n" +
" }\\n" +
" }\\n" +
" }\\n" +
" }\\n" +
"\\n" +
" fragment FullType on __Type {\\n" +
" kind\\n" +
" name\\n" +
" description\\n" +
" fields(includeDeprecated: true) {\\n" +
" name\\n" +
" description\\n" +
" args {\\n" +
" ...InputValue\\n" +
" }\\n" +
" type {\\n" +
" ...TypeRef\\n" +
" }\\n" +
" isDeprecated\\n" +
" deprecationReason\\n" +
" }\\n" +
" inputFields {\\n" +
" ...InputValue\\n" +
" }\\n" +
" interfaces {\\n" +
" ...TypeRef\\n" +
" }\\n" +
" enumValues(includeDeprecated: true) {\\n" +
" name\\n" +
" description\\n" +
" isDeprecated\\n" +
" deprecationReason\\n" +
" }\\n" +
" possibleTypes {\\n" +
" ...TypeRef\\n" +
" }\\n" +
" }\\n" +
"\\n" +
" fragment InputValue on __InputValue {\\n" +
" name\\n" +
" description\\n" +
" type { ...TypeRef }\\n" +
" defaultValue\\n" +
" }\\n" +
"\\n" +
" fragment TypeRef on __Type {\\n" +
" kind\\n" +
" name\\n" +
" ofType {\\n" +
" kind\\n" +
" name\\n" +
" ofType {\\n" +
" kind\\n" +
" name\\n" +
" ofType {\\n" +
" kind\\n" +
" name\\n" +
" ofType {\\n" +
" kind\\n" +
" name\\n" +
" ofType {\\n" +
" kind\\n" +
" name\\n" +
" ofType {\\n" +
" kind\\n" +
" name\\n" +
" ofType {\\n" +
" kind\\n" +
" name\\n" +
" }\\n" +
" }\\n" +
" }\\n" +
" }\\n" +
" }\\n" +
" }\\n" +
" }\\n" +
" }\\n" +
" "
private const val introspectionQuery = "{\"query\": \"$rawIntrospectionQuery\",\"variables\":{},\"operationName\":\"IntrospectionQuery\"}"
}