graphgate-planner 0.5.1

GraphGate is Apollo Federation implemented in Rust
Documentation 
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{
    topProducts {
        upc
        name
        price
    }
}
---
{}
---
{
    "type": "sequence",
    "nodes": [
        {
            "type": "fetch",
            "service": "products",
            "query": "query { topProducts { ... on Mouse { upc name price } ... on Book { upc __key1___typename:__typename __key1_upc:upc } ... on Car { upc __key2___typename:__typename __key2_upc:upc } } }"
        },
        {
            "type": "parallel",
            "nodes": [
                {
                    "type": "flatten",
                    "path": "[topProducts](Book)",
                    "prefix": 1,
                    "service": "books",
                    "query": "query($representations:[_Any!]!) { _entities(representations:$representations) { ... on Book { name price } } }"
                },
                {
                    "type": "flatten",
                    "path": "[topProducts](Car)",
                    "prefix": 2,
                    "service": "cars",
                    "query": "query($representations:[_Any!]!) { _entities(representations:$representations) { ... on Car { name price } } }"
                }
            ]
        }
    ]
}
---
{
    topProducts {
        upc
        name
        price
        ... on Mouse {
            isWireless
        }
        ... on Book {
            isbn issuer publishDate
        }
        ... on Car {
            brand power torque
        }
    }
}
---
{}
---
{
    "type": "sequence",
    "nodes": [
        {
            "type": "fetch",
            "service": "products",
            "query": "query { topProducts { ... on Mouse { upc name price isWireless } ... on Book { upc __key1___typename:__typename __key1_upc:upc } ... on Car { upc __key2___typename:__typename __key2_upc:upc } } }"
        },
        {
            "type": "parallel",
            "nodes": [
                {
                    "type": "flatten",
                    "service": "books",
                    "prefix": 1,
                    "path": "[topProducts](Book)",
                    "query": "query($representations:[_Any!]!) { _entities(representations:$representations) { ... on Book { name price isbn issuer publishDate } } }"
                },
                {
                    "type": "flatten",
                    "service": "cars",
                    "prefix": 2,
                    "path": "[topProducts](Car)",
                    "query": "query($representations:[_Any!]!) { _entities(representations:$representations) { ... on Car { name price brand power torque } } }"
                }
            ]
        }
    ]
}