PdfServiceProxy

PdfServiceProxy hides the internal generated PDFServiceClient (WCF) behind a single GetImage operation, requesting an immediate-priority cache entry and delegating the wait/retry behavior to the remote PDF service via PDFCacheArgs rather than implementing client-side retries itself. It has no in-repository caller and is reachable only by package consumers*.

Purpose

• Retrieve a cached PDF page image by sequence number, waiting for the remote service to render and cache it if it is not yet available (OP-WP-05, WP-BR-011).

Context

• Namespace: SAIF.Services.Web.Proxies
• Assembly/package: SAIF.Services.Web.Proxies (packaged in SAIF.SAIFCode.Core)

Public members

Member	Signature	Purpose
Constructor	PdfServiceProxy(string serviceUrl, string database)	Guards both arguments, then builds a BasicHttpBinding with int.MaxValue quotas; database is stored as the data environment for later requests (WP-BR-001)
GetImage	byte[] GetImage(long imageSeqNum, int maxWaitTimeInSeconds = 10)	Requests immediate caching (priority 10000) under data user "IMG", retrying up to maxWaitTimeInSeconds times at 1-second intervals, and returns the cached image bytes (WP-BR-011)
Dispose	void Dispose()	Closes the underlying generated PDFServiceClient by calling Close(), without an Abort() fallback on a faulted channel*

Behavioral notes

• A null result returned by the wire LoadCache call throws NullReferenceException; there is no null guard on the wire response.
• "IMG" is a fixed data-user pool code, not a database schema.

Constraints and usage notes

• Callers must supply both the endpoint URL and the target data environment/database at construction; neither is read from configuration by this wrapper.

Note: Statements marked with * were inferred from code structure, naming conventions, or contextual evidence where direct confirmation was not available in source artifacts. Statements marked with ** could not be confirmed; treat as unknown until verified.

Sources

• Services/SAIF.Services.Web.Proxies/PDFServiceProxy.cs