Hello, Im investigating `Apollo3` on Android

# apollo-kotlin

[Tower Guidev2]

Hello, Im investigating Apollo3 on Android

[Tower Guidev2]

// Replace
val response = apolloClient.query(query)
                      .toBuilder()
                      .responseFetcher(ApolloResponseFetchers.CACHE_FIRST)
                      .build()
                      .await()

// With
val request = ApolloRequest(query).withFetchPolicy(CacheFirst)
val response = apolloClient.query(request)

I cannot see/use function withFetchPolicy

[Tower Guidev2]

what am I doing wrong?

[Tower Guidev2]

my gradle resembles this

api 'com.apollographql.apollo3:apollo-runtime:3.0.0-alpha03'
api 'com.apollographql.apollo3:apollo-api:3.0.0-alpha03'

with plugin this

plugins {
    id "com.android.library"
    id "kotlin-android"
    id "kotlin-kapt"
    id 'org.jetbrains.kotlin.plugin.serialization' version '1.4.20'
    id 'dagger.hilt.android.plugin'
    id 'com.apollographql.apollo3' version '3.0.0-alpha03'
}

[mbonnin]

Hi again 👋 ! That was fast ⚡ 😃

[mbonnin]

You'll need to add apollo-normalized-cache to your dependencies

[mbonnin]

withFetchPolicy is an extension function defined in this artifact

[Tower Guidev2]

😄

[Tower Guidev2]

when using apollo2 I see these HTTP Headers including cache (X-APOLLO-CACHE-FETCH-STRATEGY)

I/okhttp.OkHttpClient: --> POST <https://rickandmortyapi.com/graphql>
I/okhttp.OkHttpClient: Content-Length: 360
I/okhttp.OkHttpClient: Content-Type: application/json
I/okhttp.OkHttpClient: Accept: application/json
I/okhttp.OkHttpClient: X-APOLLO-OPERATION-ID: adce3b369f8f6e372a2b01fc227d31ec3d312e86580a2833cd3bd732b5d186f9
I/okhttp.OkHttpClient: X-APOLLO-OPERATION-NAME: LocationAttempt
I/okhttp.OkHttpClient: X-APOLLO-CACHE-KEY: fe3283fbe04b4979510c54491afdc796
I/okhttp.OkHttpClient: X-APOLLO-CACHE-FETCH-STRATEGY: NETWORK_ONLY
I/okhttp.OkHttpClient: X-APOLLO-EXPIRE-TIMEOUT: 0
I/okhttp.OkHttpClient: X-APOLLO-EXPIRE-AFTER-READ: false
I/okhttp.OkHttpClient: X-APOLLO-PREFETCH: false
I/okhttp.OkHttpClient: X-APOLLO-CACHE-DO-NOT-STORE: false
I/okhttp.OkHttpClient: traceparent: 00-8b080467e95d488cbdc242236f6cf8ec--00
I/okhttp.OkHttpClient: tracestate: @nr=0-2-2693137-1444013261-----1629808125837

However when I switch to Apollo3 I dont see the same HTTP headers, is that anything to be concerned about?

[mbonnin]

I don't think this is a problem. HTTP doesn't need to know about cache by default and it saves a few bytes for each query

[mbonnin]

If you need additional headers, you can add them with withHttpHeaders()

[Tower Guidev2]

ok, I'll relax 😉