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Viewing file:     traceTreeBuilder.js (5.77 KB)      -rw-r--r--

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.dateToProtoTimestamp = exports.TraceTreeBuilder = void 0;
const graphql_1 = require("graphql");
const apollo_reporting_protobuf_1 = require("apollo-reporting-protobuf");
function internalError(message) {
    return new Error(`[internal apollo-server error] ${message}`);
}
class TraceTreeBuilder {
    constructor(options) {
        this.rootNode = new apollo_reporting_protobuf_1.Trace.Node();
        this.logger = console;
        this.trace = new apollo_reporting_protobuf_1.Trace({ root: this.rootNode });
        this.stopped = false;
        this.nodes = new Map([
            [responsePathAsString(), this.rootNode],
        ]);
        this.rewriteError = options.rewriteError;
        if (options.logger)
            this.logger = options.logger;
    }
    startTiming() {
        if (this.startHrTime) {
            throw internalError('startTiming called twice!');
        }
        if (this.stopped) {
            throw internalError('startTiming called after stopTiming!');
        }
        this.trace.startTime = dateToProtoTimestamp(new Date());
        this.startHrTime = process.hrtime();
    }
    stopTiming() {
        if (!this.startHrTime) {
            throw internalError('stopTiming called before startTiming!');
        }
        if (this.stopped) {
            throw internalError('stopTiming called twice!');
        }
        this.trace.durationNs = durationHrTimeToNanos(process.hrtime(this.startHrTime));
        this.trace.endTime = dateToProtoTimestamp(new Date());
        this.stopped = true;
    }
    willResolveField(info) {
        if (!this.startHrTime) {
            throw internalError('willResolveField called before startTiming!');
        }
        if (this.stopped) {
            throw internalError('willResolveField called after stopTiming!');
        }
        const path = info.path;
        const node = this.newNode(path);
        node.type = info.returnType.toString();
        node.parentType = info.parentType.toString();
        node.startTime = durationHrTimeToNanos(process.hrtime(this.startHrTime));
        if (typeof path.key === 'string' && path.key !== info.fieldName) {
            node.originalFieldName = info.fieldName;
        }
        return () => {
            node.endTime = durationHrTimeToNanos(process.hrtime(this.startHrTime));
        };
    }
    didEncounterErrors(errors) {
        errors.forEach((err) => {
            if (err.extensions && err.extensions.serviceName) {
                return;
            }
            const errorForReporting = this.rewriteAndNormalizeError(err);
            if (errorForReporting === null) {
                return;
            }
            this.addProtobufError(errorForReporting.path, errorToProtobufError(errorForReporting));
        });
    }
    addProtobufError(path, error) {
        if (!this.startHrTime) {
            throw internalError('addProtobufError called before startTiming!');
        }
        if (this.stopped) {
            throw internalError('addProtobufError called after stopTiming!');
        }
        let node = this.rootNode;
        if (Array.isArray(path)) {
            const specificNode = this.nodes.get(path.join('.'));
            if (specificNode) {
                node = specificNode;
            }
            else {
                this.logger.warn(`Could not find node with path ${path.join('.')}; defaulting to put errors on root node.`);
            }
        }
        node.error.push(error);
    }
    newNode(path) {
        const node = new apollo_reporting_protobuf_1.Trace.Node();
        const id = path.key;
        if (typeof id === 'number') {
            node.index = id;
        }
        else {
            node.responseName = id;
        }
        this.nodes.set(responsePathAsString(path), node);
        const parentNode = this.ensureParentNode(path);
        parentNode.child.push(node);
        return node;
    }
    ensureParentNode(path) {
        const parentPath = responsePathAsString(path.prev);
        const parentNode = this.nodes.get(parentPath);
        if (parentNode) {
            return parentNode;
        }
        return this.newNode(path.prev);
    }
    rewriteAndNormalizeError(err) {
        if (this.rewriteError) {
            const clonedError = Object.assign(Object.create(Object.getPrototypeOf(err)), err);
            const rewrittenError = this.rewriteError(clonedError);
            if (rewrittenError === null) {
                return null;
            }
            if (!(rewrittenError instanceof graphql_1.GraphQLError)) {
                return err;
            }
            return new graphql_1.GraphQLError(rewrittenError.message, err.nodes, err.source, err.positions, err.path, err.originalError, rewrittenError.extensions || err.extensions);
        }
        return err;
    }
}
exports.TraceTreeBuilder = TraceTreeBuilder;
function durationHrTimeToNanos(hrtime) {
    return hrtime[0] * 1e9 + hrtime[1];
}
function responsePathAsString(p) {
    if (p === undefined) {
        return '';
    }
    let res = String(p.key);
    while ((p = p.prev) !== undefined) {
        res = `${p.key}.${res}`;
    }
    return res;
}
function errorToProtobufError(error) {
    return new apollo_reporting_protobuf_1.Trace.Error({
        message: error.message,
        location: (error.locations || []).map(({ line, column }) => new apollo_reporting_protobuf_1.Trace.Location({ line, column })),
        json: JSON.stringify(error),
    });
}
function dateToProtoTimestamp(date) {
    const totalMillis = +date;
    const millis = totalMillis % 1000;
    return new apollo_reporting_protobuf_1.google.protobuf.Timestamp({
        seconds: (totalMillis - millis) / 1000,
        nanos: millis * 1e6,
    });
}
exports.dateToProtoTimestamp = dateToProtoTimestamp;
//# sourceMappingURL=traceTreeBuilder.js.map